Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Income Statement [Abstract]
Net sales	$ 28,382	$ 24,790	$ 58,220	$ 47,911
Costs of sales	21,503	17,284	43,878	34,034
Gross profit	6,879	7,506	14,342	13,877
Operating expenses:
Research and development	93	95	197	166
Selling, general and administrative expenses	5,174	5,136	11,760	9,493
Total operating expenses	5,267	5,231	11,957	9,659
Income from operations	1,612	2,275	2,385	4,218
Other income (expenses)
Interest expense	(122)	(182)	(249)	(359)
Interest income	63	0	155	0
Amortization of debt discount	(4)	(6)	(10)	(11)
Other income	0	7	0	27
Total other expenses	(63)	(181)	(104)	(343)
Net income before income tax provision and income from equity method investment	1,549	2,094	2,281	3,875
Income from equity method investment	0	78	0	223
Income tax expense	(401)	(430)	(580)	(954)
Net income	1,148	1,742	1,701	3,144
Less: series B preferred dividends	0	(21)	0	(49)
Net Income available to common stockholders	$ 1,148	$ 1,721	$ 1,701	$ 3,095
Net income per common share
basic (in dollars per share)	$ 0.03	$ 0.05	$ 0.05	$ 0.09
diluted (in dollars per share)	$ 0.03	$ 0.05	$ 0.04	$ 0.08
Weighted average common shares outstanding
basic (in shares)	37,336	36,855	37,298	36,628
diluted (in shares)	39,604	37,490	39,535	37,195