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v3.25.1

Summary of Significant Accounting Policies (Details Narrative) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2025 | Jan. 31, 2024 | Jan. 31, 2025 | Jan. 31, 2024 | Apr. 30, 2024 | Jan. 31, 2023 | Aug. 31, 2020
Product Information [Line Items] |  |  |  |  |  |  |
Cash, cash equivalents and restricted cash | $ 10,180,000 |  | $ 10,180,000 |  | $ 3,305,000 |  |
Allowance for credit losses | 100,000 |  | 100,000 |  |  |  |
Share-based compensation expense | 800,000 | $ 100,000 | 1,331,000 | $ 803,000 |  |  |
Revenues | 825,000 | 1,792,000 | 4,545,000 | 3,953,000 |  |  |
Revenue remaining performance obligation | 7,500,000 | 3,300,000 | $ 7,500,000 | $ 3,300,000 |  |  |
Antidilutive securities excluded from computation of diluted net loss per share |  |  | 20,835,027 | 6,094,714 |  |  |
Product development expense | $ 1,300,000 | $ 1,500,000 | $ 2,600,000 | $ 5,500,000 |  |  |
Patents [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Intangible asset estimated lives | 20 years |  | 20 years |  |  |  |
Trade Names [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Intangible asset estimated lives | 12 years |  | 12 years |  |  |  |
Customer Relationships [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Intangible asset estimated lives | 10 years |  | 10 years |  |  |  |
Transferred at Point in Time [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Revenues | $ 400,000 |  | $ 4,000,000.0 |  |  |  |
Transferred over Time [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Revenues | $ 400,000 |  | $ 500,000 |  |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Four Customers [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  |  | 73.00% |  |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Five Customers [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  |  |  | 36.00% |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three Customers [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk percentage | 95.00% |  |  |  |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  | 85.00% |  |  |  |  |
Santander Bank [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Deposits | $ 154,000 |  | $ 154,000 |  |  |  |
Letters of credit issued amount |  |  |  |  |  |  | $ 645,000
Letters of credit outstanding amount |  | $ 65,000 |  | $ 65,000 |  | $ 258,000 | $ 323,000

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