{
  "schema": "canli.company-reference.v1",
  "cik": "0000006207",
  "name": "AMREP CORP.",
  "selection_policy": "extended-v22",
  "source_url": "https://data.sec.gov/api/xbrl/companyfacts/CIK0000006207.json",
  "source_sha256": "296c6000f5bbe3ca4073e78dca81ce26577cff64d19eb0b160a13e9c84f35ea4",
  "fetched_at": "2026-09-19T14:43:16.671Z",
  "policy": "Latest-filed annual-report facts per unit and reporting period at capture time. Duration facts cover 300 to 400 days. This selection can include restatements and is not a point-in-time backtest dataset. Missing concepts are omitted, never zero-filled. Values retain original units and are not currency converted. Extended concepts require compatible unit shapes and at least three reporting ends with changing values within one unit. Constant or incompatible added histories are omitted.",
  "claim_boundary": "Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. Validate a separately constructed return series with the validation API; accounting values are not returns.",
  "concepts": [
    {
      "tag": "Assets",
      "taxonomy": "us-gaap",
      "label": "Total assets",
      "kind": "instant",
      "meaning": "Resources recognized on the balance sheet. Book assets are not the market value of the business.",
      "observations": [
        {
          "end": "2026-04-30",
          "val": 144778000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "end": "2025-04-30",
          "val": 133776000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025Q1I",
          "unit": "USD"
        },
        {
          "end": "2024-04-30",
          "val": 122830000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2024Q1I",
          "unit": "USD"
        },
        {
          "end": "2023-04-30",
          "val": 115895000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2023Q1I",
          "unit": "USD"
        },
        {
          "end": "2022-04-30",
          "val": 94917000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2022Q1I",
          "unit": "USD"
        },
        {
          "end": "2021-04-30",
          "val": 97366000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2021Q1I",
          "unit": "USD"
        },
        {
          "end": "2020-04-30",
          "val": 96666000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2020Q1I",
          "unit": "USD"
        },
        {
          "end": "2019-04-30",
          "val": 100530000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2019Q1I",
          "unit": "USD"
        },
        {
          "end": "2018-04-30",
          "val": 106225000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-04-30",
          "val": 106676000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-04-30",
          "val": 120628000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-04-30",
          "val": 138729000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2015Q1I",
          "unit": "USD"
        },
        {
          "end": "2014-04-30",
          "val": 186105000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2014Q1I",
          "unit": "USD"
        },
        {
          "end": "2013-04-30",
          "val": 195856000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2013Q1I",
          "unit": "USD"
        },
        {
          "end": "2012-04-30",
          "val": 203039000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012Q1I",
          "unit": "USD"
        },
        {
          "end": "2011-04-30",
          "val": 190040000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2011Q1I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Liabilities",
      "taxonomy": "us-gaap",
      "label": "Total liabilities",
      "kind": "instant",
      "meaning": "Recognized obligations at the reporting date. The definition and scope differ from interest-bearing debt.",
      "observations": [
        {
          "end": "2026-04-30",
          "val": 4035000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "end": "2025-04-30",
          "val": 3815000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025Q1I",
          "unit": "USD"
        },
        {
          "end": "2024-04-30",
          "val": 4780000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2024Q1I",
          "unit": "USD"
        },
        {
          "end": "2023-04-30",
          "val": 4895000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2023Q1I",
          "unit": "USD"
        },
        {
          "end": "2022-04-30",
          "val": 11755000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2022Q1I",
          "unit": "USD"
        },
        {
          "end": "2021-04-30",
          "val": 8477000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2021Q1I",
          "unit": "USD"
        },
        {
          "end": "2020-04-30",
          "val": 12029000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2020Q1I",
          "unit": "USD"
        },
        {
          "end": "2019-04-30",
          "val": 10684000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2019Q1I",
          "unit": "USD"
        },
        {
          "end": "2018-04-30",
          "val": 19095000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-04-30",
          "val": 21843000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-04-30",
          "val": 37784000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-04-30",
          "val": 45408000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2015Q1I",
          "unit": "USD"
        },
        {
          "end": "2014-04-30",
          "val": 106804000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2014Q1I",
          "unit": "USD"
        },
        {
          "end": "2013-04-30",
          "val": 123315000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2013Q1I",
          "unit": "USD"
        },
        {
          "end": "2012-04-30",
          "val": 128394000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012Q1I",
          "unit": "USD"
        },
        {
          "end": "2011-04-30",
          "val": 127668000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2011Q1I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "StockholdersEquity",
      "taxonomy": "us-gaap",
      "label": "Stockholders equity",
      "kind": "instant",
      "meaning": "The reported residual interest after liabilities. It is an accounting amount, not market capitalization.",
      "observations": [
        {
          "end": "2026-04-30",
          "val": 140743000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "end": "2025-04-30",
          "val": 129961000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "end": "2024-04-30",
          "val": 118050000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024Q1I",
          "unit": "USD"
        },
        {
          "end": "2023-04-30",
          "val": 111000000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023Q1I",
          "unit": "USD"
        },
        {
          "end": "2022-04-30",
          "val": 83162000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022Q1I",
          "unit": "USD"
        },
        {
          "end": "2021-04-30",
          "val": 88889000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021Q1I",
          "unit": "USD"
        },
        {
          "end": "2020-04-30",
          "val": 84637000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020Q1I",
          "unit": "USD"
        },
        {
          "end": "2019-04-30",
          "val": 89846000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019Q1I",
          "unit": "USD"
        },
        {
          "end": "2018-04-30",
          "val": 87130000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-04-30",
          "val": 85356000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-04-30",
          "val": 82844000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-04-30",
          "val": 93321000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015Q1I",
          "unit": "USD"
        },
        {
          "end": "2014-04-30",
          "val": 79301000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014Q1I",
          "unit": "USD"
        },
        {
          "end": "2013-04-30",
          "val": 72541000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013Q1I",
          "unit": "USD"
        },
        {
          "end": "2012-04-30",
          "val": 74645000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012Q1I",
          "unit": "USD"
        },
        {
          "end": "2011-04-30",
          "val": 78946000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011Q1I",
          "unit": "USD"
        },
        {
          "end": "2010-04-30",
          "val": 86567000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010Q1I",
          "unit": "USD"
        },
        {
          "end": "2009-04-30",
          "val": 96281000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009Q1I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "CashAndCashEquivalentsAtCarryingValue",
      "taxonomy": "us-gaap",
      "label": "Cash and cash equivalents",
      "kind": "instant",
      "meaning": "Cash and qualifying short-term liquid investments under the filer’s accounting policy. Restricted cash and longer-term investments may be reported separately.",
      "observations": [
        {
          "end": "2026-04-30",
          "val": 52327000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "end": "2025-04-30",
          "val": 39466000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025Q1I",
          "unit": "USD"
        },
        {
          "end": "2024-04-30",
          "val": 29694000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2024Q1I",
          "unit": "USD"
        },
        {
          "end": "2023-04-30",
          "val": 19993000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2023Q1I",
          "unit": "USD"
        },
        {
          "end": "2022-04-30",
          "val": 15721000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2022Q1I",
          "unit": "USD"
        },
        {
          "end": "2021-04-30",
          "val": 24801000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2021Q1I",
          "unit": "USD"
        },
        {
          "end": "2020-04-30",
          "val": 17502000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2020Q1I",
          "unit": "USD"
        },
        {
          "end": "2019-04-30",
          "val": 13267000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "unit": "USD"
        },
        {
          "end": "2018-04-30",
          "val": 10851000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-04-30",
          "val": 11811000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "unit": "USD"
        },
        {
          "end": "2016-04-30",
          "val": 14562000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-04-30",
          "val": 12050000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015Q1I",
          "unit": "USD"
        },
        {
          "end": "2014-04-30",
          "val": 7571000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014Q1I",
          "unit": "USD"
        },
        {
          "end": "2013-04-30",
          "val": 2567000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013Q1I",
          "unit": "USD"
        },
        {
          "end": "2012-04-30",
          "val": 27847000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012Q1I",
          "unit": "USD"
        },
        {
          "end": "2011-04-30",
          "val": 25756000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011Q1I",
          "unit": "USD"
        },
        {
          "end": "2010-04-30",
          "val": 25531000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010Q1I",
          "unit": "USD"
        },
        {
          "end": "2009-04-30",
          "val": 29018000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009Q1I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Net income or loss",
      "kind": "duration",
      "meaning": "Reported profit or loss for the period. Check the filing for attribution, exceptional items and discontinued operations before comparing companies.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 10288000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 12716000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 6690000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 21790000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 15862000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 7392000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": -5903000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 1527000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 238000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": -15000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": -10224000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": 11320000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": -2939000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": -2838000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": -1143000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": -7561000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": -9480000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInOperatingActivities",
      "taxonomy": "us-gaap",
      "label": "Operating cash flow",
      "kind": "duration",
      "meaning": "Cash generated or used by operating activities. Working-capital timing can make this differ substantially from reported income.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 12878000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 10242000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 10714000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 6389000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 15476000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 12609000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 765000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 592000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 531000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 10437000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 3467000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": 9962000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": 5495000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": -11614000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": 5812000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": 5901000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": 8679000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PaymentsToAcquirePropertyPlantAndEquipment",
      "taxonomy": "us-gaap",
      "label": "Capital expenditure payments",
      "kind": "duration",
      "meaning": "Cash payments to acquire property, plant and equipment. This taxonomy concept does not capture every form of investment or acquisition.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 102000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 583000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 457000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 131000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 1287000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 5000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 9000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 8000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 52000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 249000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 798000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": 1127000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": 1259000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": 1049000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": 1073000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": 1012000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": 2884000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "Revenues",
      "taxonomy": "us-gaap",
      "label": "Revenue",
      "kind": "duration",
      "meaning": "Revenue under this specific accounting concept. A missing value is not zero; filers can use other revenue concepts.",
      "observations": [
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 12831000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 8927000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 42368000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 41664000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": 49790000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": 62197000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": 83001000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": 85360000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": 96837000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": 120498000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RevenueFromContractWithCustomerExcludingAssessedTax",
      "taxonomy": "us-gaap",
      "label": "Contract revenue excluding tax",
      "kind": "duration",
      "meaning": "Revenue from customer contracts excluding assessed taxes under this specific taxonomy concept. It is not automatically comparable to older revenue tags.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 52847000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 49694000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 51369000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 48676000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 58926000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 40069000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 18783000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 12754000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInFinancingActivities",
      "taxonomy": "us-gaap",
      "label": "Financing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from financing activities, including borrowing, repayments and transactions with owners. A positive amount does not establish operating profitability.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": -8000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": -9000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": -9000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": -1986000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": -23361000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": -5305000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 2510000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": -549000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 1838000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": -12939000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": -3757000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": -4356000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": 768000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": -347000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": -2660000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": -4669000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": -9282000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "NetCashProvidedByUsedInInvestingActivities",
      "taxonomy": "us-gaap",
      "label": "Investing cash flow",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Net cash from investing activities, including asset purchases, disposals and investment transactions. This differs from capital expenditure payments alone.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": -102000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": -553000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": -457000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": -131000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": -1195000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": -5000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": -9000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 152000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": -139000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": -249000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 2802000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": -1127000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": -1259000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": -2172000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": -1061000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": -1007000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": -2884000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "RetainedEarningsAccumulatedDeficit",
      "taxonomy": "us-gaap",
      "label": "Retained earnings or deficit",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Accumulated undistributed earnings or deficit at the reporting date. This balance is not cash available for distribution.",
      "observations": [
        {
          "end": "2026-04-30",
          "val": 106312000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "end": "2025-04-30",
          "val": 96024000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025Q1I",
          "unit": "USD"
        },
        {
          "end": "2024-04-30",
          "val": 83308000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2024Q1I",
          "unit": "USD"
        },
        {
          "end": "2023-04-30",
          "val": 76618000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2023Q1I",
          "unit": "USD"
        },
        {
          "end": "2022-04-30",
          "val": 54828000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2022Q1I",
          "unit": "USD"
        },
        {
          "end": "2021-04-30",
          "val": 47710000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2021Q1I",
          "unit": "USD"
        },
        {
          "end": "2020-04-30",
          "val": 43149000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2020Q1I",
          "unit": "USD"
        },
        {
          "end": "2019-04-30",
          "val": 49052000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2019Q1I",
          "unit": "USD"
        },
        {
          "end": "2018-04-30",
          "val": 47525000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2018Q1I",
          "unit": "USD"
        },
        {
          "end": "2017-04-30",
          "val": 46764000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "unit": "USD"
        },
        {
          "end": "2016-04-30",
          "val": 46779000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "unit": "USD"
        },
        {
          "end": "2015-04-30",
          "val": 57003000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "unit": "USD"
        },
        {
          "end": "2014-04-30",
          "val": 45683000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "unit": "USD"
        },
        {
          "end": "2013-04-30",
          "val": 63920000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "unit": "USD"
        },
        {
          "end": "2012-04-30",
          "val": 66758000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "unit": "USD"
        },
        {
          "end": "2011-04-30",
          "val": 67901000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfSharesOutstandingBasic",
      "taxonomy": "us-gaap",
      "label": "Basic weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Time-weighted shares used for basic earnings per share. This denominator differs from shares outstanding at a single reporting date.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 5337000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 5318000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 5300000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 5282,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 7170,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 7743,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 8134,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 8099,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 8073,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 8052000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 8037000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "WeightedAverageNumberOfDilutedSharesOutstanding",
      "taxonomy": "us-gaap",
      "label": "Diluted weighted-average shares",
      "kind": "duration",
      "unitKind": "shares",
      "meaning": "Weighted-average shares used for diluted earnings per share. Potential shares are included under the applicable dilution rules, not simply added to outstanding shares.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 5393000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "shares"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 5369000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "shares"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 5347000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "shares"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 5307,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "shares"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 7193,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "shares"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 7773,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "shares"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 8134,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "shares"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 8145,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "shares"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 8104,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "shares"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 8077000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "shares"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 8059000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareBasic",
      "taxonomy": "us-gaap",
      "label": "Basic earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per basic common share or unit. Inspect attribution, share classes and restatements before comparing periods. This is not a market return.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 1.93,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 2.39,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 1.26,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 4.13,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 2.21,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 0.95,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": -0.73,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "EarningsPerShareDiluted",
      "taxonomy": "us-gaap",
      "label": "Diluted earnings per share",
      "kind": "duration",
      "unitKind": "per-share",
      "meaning": "Reported earnings or loss per share under dilution rules. Antidilutive instruments may be excluded. A diluted value can equal the basic value without implying no potential dilution.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 1.91,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD/shares"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 2.37,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD/shares"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 1.25,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD/shares"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 4.11,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD/shares"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 2.21,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD/shares"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 0.95,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD/shares"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": -0.73,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD/shares"
        }
      ]
    },
    {
      "tag": "IncomeTaxExpenseBenefit",
      "taxonomy": "us-gaap",
      "label": "Income tax expense or benefit",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Current and deferred income tax expense or benefit for continuing operations. This accounting expense differs from cash taxes paid.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 3838000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 1009000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 1735000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": -14149000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 5704000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 2643000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": -1722000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": -708000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": -279000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 997000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": -5211000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": -2132000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": -567000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": -1759000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": -896000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": -3212000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": -5891000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PropertyPlantAndEquipmentNet",
      "taxonomy": "us-gaap",
      "label": "Net property, plant and equipment",
      "kind": "instant",
      "unitKind": "money",
      "meaning": "Carrying amount of property, plant and equipment after accumulated depreciation, depletion and amortization. It is not replacement cost or market value.",
      "observations": [
        {
          "end": "2026-04-30",
          "val": 2144000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "unit": "USD"
        },
        {
          "end": "2025-04-30",
          "val": 2186000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025Q1I",
          "unit": "USD"
        },
        {
          "end": "2024-04-30",
          "val": 1741000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2024Q1I",
          "unit": "USD"
        },
        {
          "end": "2023-04-30",
          "val": 1351000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2023Q1I",
          "unit": "USD"
        },
        {
          "end": "2022-04-30",
          "val": 1267000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2022Q1I",
          "unit": "USD"
        },
        {
          "end": "2021-04-30",
          "val": 28000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2021Q1I",
          "unit": "USD"
        },
        {
          "end": "2020-04-30",
          "val": 35000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2020Q1I",
          "unit": "USD"
        },
        {
          "end": "2018-04-30",
          "val": 9745000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "unit": "USD"
        },
        {
          "end": "2017-04-30",
          "val": 10852000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2017Q1I",
          "unit": "USD"
        },
        {
          "end": "2016-04-30",
          "val": 11997000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2016Q1I",
          "unit": "USD"
        },
        {
          "end": "2015-04-30",
          "val": 15763000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2015Q1I",
          "unit": "USD"
        },
        {
          "end": "2014-04-30",
          "val": 17222000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2014Q1I",
          "unit": "USD"
        },
        {
          "end": "2013-04-30",
          "val": 25286000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2013Q1I",
          "unit": "USD"
        },
        {
          "end": "2012-04-30",
          "val": 25924000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2012Q1I",
          "unit": "USD"
        },
        {
          "end": "2011-04-30",
          "val": 28150000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2011Q1I",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "ShareBasedCompensation",
      "taxonomy": "us-gaap",
      "label": "Share-based compensation expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Reported noncash expense for share-based payment arrangements. Noncash treatment does not mean the awards have no economic cost to shareholders.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 447000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 423000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 317000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 238000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 217000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 132000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 113000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 231000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 177000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 117000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 68000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": 122000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": 47000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": 0,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": 0,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "OperatingIncomeLoss",
      "taxonomy": "us-gaap",
      "label": "Operating income or loss",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Operating revenue less operating expenses for the reporting period. It excludes items outside the reported operating result and is not free cash flow.",
      "observations": [
        {
          "start": "2025-05-01",
          "end": "2026-04-30",
          "val": 12392000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2025",
          "unit": "USD"
        },
        {
          "start": "2024-05-01",
          "end": "2025-04-30",
          "val": 12107000,
          "accn": "0001104659-26-086659",
          "fy": 2026,
          "fp": "FY",
          "form": "10-K",
          "filed": "2026-07-24",
          "frame": "CY2024",
          "unit": "USD"
        },
        {
          "start": "2023-05-01",
          "end": "2024-04-30",
          "val": 7602000,
          "accn": "0001410578-25-001515",
          "fy": 2025,
          "fp": "FY",
          "form": "10-K",
          "filed": "2025-07-25",
          "frame": "CY2023",
          "unit": "USD"
        },
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 5830000,
          "accn": "0001410578-24-001102",
          "fy": 2024,
          "fp": "FY",
          "form": "10-K",
          "filed": "2024-07-23",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 21303000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 9047000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": -7959000,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        },
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": -3225000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "InterestExpense",
      "taxonomy": "us-gaap",
      "label": "Interest expense",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Borrowing costs recognized as interest expense. This is distinct from cash interest paid and may not include every capitalized borrowing cost.",
      "observations": [
        {
          "start": "2018-05-01",
          "end": "2019-04-30",
          "val": 25000,
          "accn": "0001104659-20-086542",
          "fy": 2020,
          "fp": "FY",
          "form": "10-K",
          "filed": "2020-07-27",
          "frame": "CY2018",
          "unit": "USD"
        },
        {
          "start": "2017-05-01",
          "end": "2018-04-30",
          "val": 5000,
          "accn": "0001144204-19-036278",
          "fy": 2019,
          "fp": "FY",
          "form": "10-K",
          "filed": "2019-07-26",
          "frame": "CY2017",
          "unit": "USD"
        },
        {
          "start": "2016-05-01",
          "end": "2017-04-30",
          "val": 333000,
          "accn": "0001144204-18-039152",
          "fy": 2018,
          "fp": "FY",
          "form": "10-K",
          "filed": "2018-07-20",
          "frame": "CY2016",
          "unit": "USD"
        },
        {
          "start": "2015-05-01",
          "end": "2016-04-30",
          "val": 1361000,
          "accn": "0001144204-17-037145",
          "fy": 2017,
          "fp": "FY",
          "form": "10-K",
          "filed": "2017-07-18",
          "frame": "CY2015",
          "unit": "USD"
        },
        {
          "start": "2014-05-01",
          "end": "2015-04-30",
          "val": 1615000,
          "accn": "0001144204-16-115345",
          "fy": 2016,
          "fp": "FY",
          "form": "10-K",
          "filed": "2016-07-29",
          "frame": "CY2014",
          "unit": "USD"
        },
        {
          "start": "2013-05-01",
          "end": "2014-04-30",
          "val": 1721000,
          "accn": "0001144204-15-044862",
          "fy": 2015,
          "fp": "FY",
          "form": "10-K",
          "filed": "2015-07-29",
          "frame": "CY2013",
          "unit": "USD"
        },
        {
          "start": "2012-05-01",
          "end": "2013-04-30",
          "val": 1511000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2012",
          "unit": "USD"
        },
        {
          "start": "2011-05-01",
          "end": "2012-04-30",
          "val": 1403000,
          "accn": "0001144204-14-045520",
          "fy": 2014,
          "fp": "FY",
          "form": "10-K",
          "filed": "2014-07-29",
          "frame": "CY2011",
          "unit": "USD"
        },
        {
          "start": "2010-05-01",
          "end": "2011-04-30",
          "val": 1765000,
          "accn": "0000006207-13-000031",
          "fy": 2013,
          "fp": "FY",
          "form": "10-K",
          "filed": "2013-07-16",
          "frame": "CY2010",
          "unit": "USD"
        },
        {
          "start": "2009-05-01",
          "end": "2010-04-30",
          "val": 1615000,
          "accn": "0000006207-12-000009",
          "fy": 2012,
          "fp": "FY",
          "form": "10-K",
          "filed": "2012-07-26",
          "frame": "CY2009",
          "unit": "USD"
        }
      ]
    },
    {
      "tag": "PaymentsForRepurchaseOfCommonStock",
      "taxonomy": "us-gaap",
      "label": "Common-stock repurchase payments",
      "kind": "duration",
      "unitKind": "money",
      "meaning": "Cash paid to reacquire common stock during the period. This is not an authorization limit or a direct measure of the net change in share count.",
      "observations": [
        {
          "start": "2022-05-01",
          "end": "2023-04-30",
          "val": 0,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2022",
          "unit": "USD"
        },
        {
          "start": "2021-05-01",
          "end": "2022-04-30",
          "val": 21904000,
          "accn": "0001410578-23-001494",
          "fy": 2023,
          "fp": "FY",
          "form": "10-K",
          "filed": "2023-07-25",
          "frame": "CY2021",
          "unit": "USD"
        },
        {
          "start": "2020-05-01",
          "end": "2021-04-30",
          "val": 5116000,
          "accn": "0001410578-22-001969",
          "fy": 2022,
          "fp": "FY",
          "form": "10-K",
          "filed": "2022-07-21",
          "frame": "CY2020",
          "unit": "USD"
        },
        {
          "start": "2019-05-01",
          "end": "2020-04-30",
          "val": 0,
          "accn": "0001104659-21-096369",
          "fy": 2021,
          "fp": "FY",
          "form": "10-K",
          "filed": "2021-07-27",
          "frame": "CY2019",
          "unit": "USD"
        }
      ]
    }
  ],
  "source_snapshot": "/company-data/sources/296c6000f5bbe3ca4073e78dca81ce26577cff64d19eb0b160a13e9c84f35ea4.json.gz"
}
