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Share-Based Compensation Plans (Details Narrative) - USD ($) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 09, 2022 | Apr. 30, 2024 | Apr. 30, 2023 | Jan. 18, 2018 | Dec. 31, 2015
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Shares underlying options outstanding, granted |  |  |  |  |
Total unrecognized compensation |  | $ 200,000 |  |  |
Share-based compensation of weighted-average period |  | 1 year 4 months 24 days |  |  |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Shares underlying options outstanding, granted |  | 0 | 601,089 |  |
Options, outstanding, intrinsic value |  | $ 0 |  |  |
Options unvested |  | 272,000 |  |  |
Weighted average remaining contractual term |  | 8 years 6 months |  |  |
Share-based payment arrangement, expense |  | $ 100,000 | $ 300,000 |  |
Employee Stock Option One [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Options, outstanding, intrinsic value |  | 0 |  |  |
Performance Shares [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Options unvested |  |  | 66,667 |  |
Share-based payment arrangement, expense |  | 43,000 | $ 108,000 |  |
Total unrecognized compensation |  | 0 |  |  |
Restricted Stock [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based payment arrangement, expense |  | $ 1,000,000.0 | $ 1,100,000 |  |
Share-based compensation of weighted-average period |  | 1 year 6 months |  |  |
Number of restricted shares, granted |  | 4,439,257 | 1,608,681 |  |
Unrecognized compensation cost |  | $ 1,400,000 |  |  |
2015 Omnibus Incentive Plan [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation arrangement shares authorized |  | 7,282,036 |  |  | 1,332,036
Share-based compensation arrangement shares aggregate increase |  | $ 2,900,000 |  |  |
2018 Inducement Plan [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation arrangement shares authorized | 275,000 |  |  |  |
Capital shares reserved for future issuance |  |  |  | 25,000 |
Share-based compensation arrangement additional shares authorized | 250,000 |  |  |  |

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