Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Earnings Per Share [Abstract]
Net (loss) income	$ (1,325)	$ 8,401	$ 9,592	$ 27,374
Weighted average shares of common stock outstanding - basic (shares)	15,761	16,289	15,761	16,379
Dilutive effect of common stock equivalents from equity incentive plans (shares)	0	7	5	3
Weighted average shares of common stock outstanding - diluted (shares)	15,761	16,296	15,766	16,382
Net (loss) income per share - basic (usd per share)	$ (0.08)	$ 0.52	$ 0.61	$ 1.67
Net (loss) income per share - diluted (usd per share)	$ (0.08)	$ 0.52	$ 0.61	$ 1.67
Anti-dilutive shares excluding from the computation of earnings per share (usd per share)	14