Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2024 USD ($) Segment $ / shares shares	Jul. 31, 2023 USD ($) Segment	Jul. 31, 2024 USD ($) Segment $ / shares shares	Jul. 31, 2023 USD ($) Segment	Jan. 31, 2024 USD ($)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of operating segments | Segment	1	1	1	1
Number of reportable segments | Segment			1
Reserve for uncollectable accounts	$ 93		$ 93		$ 93
Uncollectible accounts written off	0	$ 140	0	$ 140
Reserve for obsolete inventory	95		95		95
Goodwill impairment losses			0		0
Research and development expenses	93	95	197	166
Advertising expenses	404	$ 190	817	$ 399
Deferred tax asset	$ 390		$ 390		$ 503
Executive Officer One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of common stock (in dollars per share) | $ / shares	$ 1.17		$ 1.17
Executive Officer Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of common stock (in dollars per share) | $ / shares	$ 1.40		$ 1.40
Performance stock awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vested (in shares) | shares	0		0
Performance stock awards | Executive Officer One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected volatility (percent)			85.70%
Term of award (years)			5 years
Risk-free interest rate (percent)			3.70%
Dividend yield (percent)			0.00%
Performance stock awards | Executive Officer Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected volatility (percent)			87.00%
Term of award (years)			5 years
Risk-free interest rate (percent)			3.40%
Dividend yield (percent)			0.00%