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