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v3.23.3

Significant Accounting Policies - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Oct. 31, 2023 | Jul. 31, 2023 | Oct. 31, 2022 | Jul. 31, 2022 | Oct. 31, 2023 | Oct. 31, 2022 | Apr. 30, 2023
Accounting Policies [Abstract] |  |  |  |  |  |  |
Cash equivalents | $ 3,600,000 |  |  |  | $ 3,600,000 |  | $ 0
Cash above US insurance limit | 4,300,000 |  |  |  | 4,300,000 |  | 8,700,000
Net loss | (2,071,000) | $ (2,566,000) | $ (16,000) | $ (319,000) | (4,637,000) | $ (335,000) |
Net cash provided by (used in) operating activities |  |  |  |  | (3,402,000) | 3,091,000 |
Accumulated deficit | 81,954,000 |  |  |  | 81,954,000 |  | 77,317,000
Cash and cash equivalents | 5,513,000 |  |  |  | 5,513,000 |  | 10,118,000
Unrecognized tax benefits | 181,000 |  |  |  | 181,000 |  | 181,000
Income tax penalties and interest expense | 0 |  | 0 |  | 0 | 0 |
Unrecognized tax benefits anticipated during the next 12 months | 0 |  |  |  | 0 |  |
Provision for income taxes | 11,000 |  | $ 14,000 |  | 39,000 | $ 31,000 |
Recurring Basis |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Liabilities, fair value | 0 |  |  |  | 0 |  | 0
Assets, fair value |  |  |  |  |  |  | 0
Nonrecurring Basis |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Liabilities, fair value | $ 0 |  |  |  | $ 0 |  | 0
Assets, fair value |  |  |  |  |  |  | $ 0

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