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v3.25.1

Summary of Significant Accounting Policies - Narrative (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Apr. 30, 2025 | Apr. 30, 2024 | Jan. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Cash, exceeded federally insured limits | $ 11,000,000 |  |
Reserve for uncollectable accounts | 93,000 |  | $ 93,000
Reserve for obsolete inventory | 95,000 |  | 95,000
Goodwill impairment losses | 0 | $ 0 |
Research and development expenses | 73,000 | 104,000 |
Advertising expenses | 814,000 | $ 476,000 |
Deferred tax asset | $ 469,000 |  | $ 258,000

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