Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Income Statement [Abstract]
Net sales	$ 31,523	$ 28,648	$ 89,743	$ 76,559
Costs of sales	24,410	20,013	68,288	54,047
Gross profit	7,113	8,635	21,455	22,512
Operating expenses:
Research and development	155	124	352	290
Selling, general and administrative expenses	6,395	5,804	18,155	15,297
Total operating expenses	6,550	5,928	18,507	15,587
Income from operations	563	2,707	2,948	6,925
Other income (expenses)
Interest expense	(120)	(124)	(369)	(483)
Interest income	37	0	192	0
Amortization of debt discount	(3)	(6)	(13)	(17)
Other income	61	0	61	27
Total other expenses	(25)	(130)	(129)	(473)
Net income before income tax provision and income from equity method investment	538	2,577	2,819	6,452
Income from equity method investment	0	0	0	223
Income tax expense	(128)	(568)	(708)	(1,522)
Net income	410	2,009	2,111	5,153
Less: series B preferred dividends	0	0	0	(49)
Net income available to common stockholders	$ 410	$ 2,009	$ 2,111	$ 5,104
Net income per common share
basic (in dollars per share)	$ 0.01	$ 0.05	$ 0.06	$ 0.14
diluted (in dollars per share)	$ 0.01	$ 0.05	$ 0.05	$ 0.14
Weighted average common shares outstanding
basic (in shares)	37,522	37,121	37,373	36,642
diluted (in shares)	39,442	37,646	39,261	37,088