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Property and Equipment - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 31, 2024 | Jul. 31, 2023 | Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2024
Property, Plant and Equipment [Line Items] |  |  |  |  |
Depreciation and amortization | $ 449,000 | $ 445,000 |  |  |
Depreciation and amortization, excluding finance leases | 412,000 | 409,000 |  |  |
Finance lease, asset, gross | 1,000,000.0 |  |  |  | $ 1,000,000.0
Finance lease, depreciation and amortization | 37,000 | 36,000 |  |  |
Amortization of leased assets | $ 37,000 | 36,000 |  |  |
Finance lease, weighted average remaining lease term | 2 years 4 months 9 days |  |  |  |
2023 Finance Lease |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Finance lease costs | $ 368,000 |  | $ 368,000 |  |
Present value of minimum future obligations interest rate | 3.50% |  |  |  |
Amortization of leased assets | $ 18,000 | 17,400 |  |  |
2022 Finance Lease |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Finance lease costs | $ 370,000 |  |  | $ 370,000 |
Present value of minimum future obligations interest rate | 3.25% |  |  |  |
Amortization of leased assets | $ 19,000 | $ 18,400 |  |  |
Capitalized software development costs |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Useful lives | 3 years |  |  |  |
Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Useful lives | 3 years |  |  |  |
Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Useful lives | 9 years |  |  |  |

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