Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Income Statement [Abstract]
Net sales	$ 35,255	$ 29,838
Costs of sales	26,071	22,375
Gross profit	9,184	7,463
Operating expenses:
Research and development	73	104
Selling, general and administrative expenses	7,533	6,586
Total operating expenses	7,606	6,690
Income from operations	1,578	773
Other income (expenses)
Interest expense	(88)	(127)
Interest income	30	92
Amortization of debt discount	(3)	(6)
Total other expenses	(61)	(41)
Net income before income tax provision	1,517	732
Income tax expense	(280)	(179)
Net income	$ 1,237	$ 553
Net income per common share
basic (in dollars per share)	$ 0.03	$ 0.01
diluted (in dollars per share)	$ 0.03	$ 0.01
Weighted average common shares outstanding
basic (in shares)	37,597	37,259
diluted (in shares)	39,378	39,328