CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Total
Balance at Jan. 31, 2024	$ 2,374	$ 164,183	$ 225,507	$ (97,528)	$ (3,597)	$ 290,939
Balances (in shares) at Jan. 31, 2024	13,242,520
Net income			7,882			7,882
Foreign currency translation gain (loss)					(790)	(790)
Net unrealized gains (losses) on available-for-sale securities					(969)	(969)
Stock compensation expense		1,211				1,211
Stock option exercises and restricted stock unit settlements, net		(893)		(13)		(906)
Stock option exercises and restricted stock unit settlements, net (in shares)	113,260
Common stock repurchases				(187)		$ (187)
Common stock repurchases (in shares)	(5,600)					(5,600)
Cash dividends			(4,025)			$ (4,025)
Balance at Apr. 30, 2024	$ 2,374	164,501	229,364	(97,728)	(5,356)	293,155
Balances (in shares) at Apr. 30, 2024	13,350,180
Balance at Jan. 31, 2025	$ 2,374	168,966	292,698	(105,643)	(6,538)	351,857
Balances (in shares) at Jan. 31, 2025	13,634,214
Net income			22,550			22,550
Foreign currency translation gain (loss)					3,621	3,621
Net unrealized gains (losses) on available-for-sale securities					2,680	2,680
Stock compensation expense		1,188				1,188
Stock option exercises and restricted stock unit settlements, net		(4,556)		(1,526)		(6,082)
Stock option exercises and restricted stock unit settlements, net (in shares)	59,472
Common stock repurchases				(6,849)		$ (6,849)
Common stock repurchases (in shares)	(55,117)					(55,117)
Cash dividends			(5,070)			$ (5,070)
Balance at Apr. 30, 2025	$ 2,374	$ 165,598	$ 310,178	$ (114,018)	$ (237)	$ 363,895
Balances (in shares) at Apr. 30, 2025	13,638,569