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Share-Based Compensation (Details Narrative) - USD ($) | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2022 | Jul. 31, 2021 | Feb. 09, 2022 | Feb. 08, 2022 | Jan. 18, 2018 | Dec. 31, 2015
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Number of restricted shares, granted | 51,500 | 0 |  |  |  |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based payment award, options, outstanding, intrinsic value | $ 0 |  |  |  |  |
Options, number of shares unvested | 813,000 |  |  |  |  |
Weighted average remaining contractual term | 9 years 4 months 24 days |  |  |  |  |
Share-based payment arrangement, expense | $ 96,000 | $ 110,000 |  |  |  |
Non-vested Stock [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized compensation cost | $ 700,000 |  |  |  |  |
Share-based compensation of weighted-average period | 2 years 3 months 18 days |  |  |  |  |
Performance Shares [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Options, number of shares unvested | 210,000 |  |  |  |  |
Weighted average remaining contractual term | 8 years 7 months 6 days |  |  |  |  |
Share-based payment arrangement, expense | $ 52,500 | 95,000 |  |  |  |
Unrecognized compensation cost | $ 100,000 |  |  |  |  |
Share-based compensation of weighted-average period | 7 months 6 days |  |  |  |  |
Options, outstanding, intrinsic value | $ 0 |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Share-based payment arrangement, expense | $ 184,000 | $ 14,000 |  |  |  |
Share-based compensation of weighted-average period | 1 year 9 months 18 days |  |  |  |  |
Unrecognized compensation cost | $ 821,067 |  |  |  |  |
2015 Omnibus Incentive Plan [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation arrangement shares authorized |  |  |  |  |  | 1,332,036
2015 Omnibus Incentive Plan [Member] | Chief Executive Officer [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Capital shares reserved for future issuance | 695,127 |  |  |  |  |
2018 Inducement Plan [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation arrangement shares authorized |  |  | 275,000 | 250,000 |  |
Capital shares reserved for future issuance | 211,487 |  |  |  | 25,000 |

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