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Income Taxes Other (Details) - USD ($) | 12 Months Ended
--- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2021
Unrecognized tax benefits |  |  |
Federal net operating loss carryforwards | $ 2,464,000 |  |
State net operating loss carryforwards | 99,333,000 |  |
Foreign net operating loss carryforwards | 74,000 |  |
Unrecognized tax benefits which would impact the Company's effective tax rate if recognized | 5,139,000 |  |
Increase in valuation allowance | 1,332,000 |  | $ 2,337,000
Activity related to gross unrecognized tax benefits |  |  |
Beginning balance | 12,841,000 | $ 17,806,000 |
Decreases related to prior year tax positions | (59,000) | (379,000) |
Increases related to current year tax positions | 2,060,000 | 1,257,000 |
Decreases related to lapsing of statute of limitations | (1,241,000) | (5,843,000) |
Ending balance | 13,601,000 | 12,841,000 |
Accrued interest and penalties related to unrecognized tax positions | 283,000 | 282,000 |
Statute of limitations expiration |  |  |
Unrecognized tax benefits |  |  |
Unrecognized tax benefits which would impact the Company's effective tax rate if recognized | 13,601,000 | $ 12,841,000 |
Increase in valuation allowance | 6,517,000 |  |
Estimated decrease in unrecognized tax benefits in the next twelve months | $ (1,616,000) |  |

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