Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Earnings Per Share [Abstract]
Net income	$ 8,613	$ 10,186	$ 5,836	$ 10,918
Weighted average shares of common stock outstanding - basic (shares)	15,734	15,741	15,733	15,749
Dilutive effect of common stock equivalents from equity incentive plans (shares)	3	2	2	1
Weighted average shares of common stock outstanding - diluted (shares)	15,737	15,743	15,735	15,750
Net (loss) income per share - basic (usd per share)	$ 0.55	$ 0.65	$ 0.37	$ 0.69
Net (loss) income per share - diluted (usd per share)	$ 0.55	$ 0.65	$ 0.37	$ 0.69