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Summary of Significant Accounting Policies (Details Narrative) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Jan. 31, 2024 | Jan. 31, 2023 | Aug. 31, 2020
Product Information [Line Items] |  |  |  |  |
Revenue remaining performance obligation | $ 4,900,000 |  |  |  |
Cash and cash equivalents | 3,300,000 | $ 7,100,000 |  |  |
Short term investments |  | 27,790,000 |  |  |
Accretion of discount and amortization of premium on investments | $ 290,000 | $ 122,000 |  |  |
Antidilutive securities excluded from computation of earnings per share, amount | 5,859,072 | 7,777,026 |  |  |
Employee benefits and share based compensation | $ 1,200,000 | $ 1,500,000 |  |  |
Product development expense | $ 7,700,000 | $ 10,000,000.0 |  |  |
Patents [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Intangible asset estimated lives | 20 years |  |  |  |
Trade Names [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Intangible asset estimated lives | 12 years |  |  |  |
Customer Relationships [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Intangible asset estimated lives | 10 years |  |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Concentration risk percentage | 52.00% | 32.00% |  |  |
Santander Bank [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Deposits | $ 154,000 |  |  |  |
Santander Bank [Member] | Letter Two [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Letters of credit issued amount |  |  | $ 65,000 | $ 258,000 |
Santander Bank [Member] | Letter Two [Member] | August 2020 [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Letters of credit outstanding |  |  |  |  | $ 323,000
Santander Bank [Member] | Restricted Cash and Security Agreements [Member] | Letter One [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Letters of credit outstanding |  |  |  |  | $ 645,000
Transferred over Time [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Revenue related to performance obligations satisfied over-time | 3,700,000 |  |  |  |
Transferred at Point in Time [Member] |  |  |  |  |
Product Information [Line Items] |  |  |  |  |
Revenue related to performance obligations satisfied over-time | $ 1,900,000 |  |  |  |

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