Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Earnings Per Share [Abstract]
Net income	$ 10,186	$ 16,833	$ 10,918	$ 18,973
Weighted average shares of common stock outstanding - basic (shares)	15,741	16,214	15,749	16,305
Dilutive effect of common stock equivalents from equity incentive plans (shares)	2	1	1	0
Weighted average shares of common stock outstanding - diluted (shares)	15,743	16,215	15,750	16,305
Net income per share - basic (usd per share)	$ 0.65	$ 1.04	$ 0.69	$ 1.16
Net income per share - diluted (usd per share)	$ 0.65	$ 1.04	$ 0.69	$ 1.16