CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Non-controlling Interests	Total
Balances at Jan. 31, 2020	$ 2,346	$ 148,746	$ 189,306	$ (33)	$ (1,116)	$ 1,781	$ 341,030
Balances (in shares) at Jan. 31, 2020	15,634,969
Net income			23,851			(40)	23,811
Foreign currency translation loss					35		35
Stock compensation expense		2,938					2,938
Stock option exercises and other share-based award settlements	$ 10	1,631					$ 1,641
Stock option exercises and other share-based award settlements (in shares)	68,000						68,000
Cash dividends			(47,047)				$ (47,047)
Balances at Jan. 31, 2021	$ 2,356	153,315	166,110	(33)	(1,081)	1,741	322,408
Balances (in shares) at Jan. 31, 2021	15,702,969
Net income			38,244			(2,538)	35,706
Foreign currency translation loss					(1,370)		(1,370)
Stock compensation expense		3,459					3,459
Stock option exercises and other share-based award settlements	$ 12	1,416					$ 1,428
Stock option exercises and other share-based award settlements (in shares)	82,471						42,000
Common stock repurchases				(20,372)			$ (20,372)
Common stock repurchases (in shares)	(527,752)						(527,752)
Cash dividends			(15,664)				$ (15,664)
Balances at Jan. 31, 2022	$ 2,368	158,190	188,690	(20,405)	(2,451)	(797)	325,595
Balances (in shares) at Jan. 31, 2022	15,257,688
Net income			33,098			1,606	34,704
Foreign currency translation loss					(425)		(425)
Stock compensation expense		3,958					3,958
Stock option exercises and other share-based award settlements	$ 6	60					$ 66
Stock option exercises and other share-based award settlements (in shares)	39,616						2,000
Common stock repurchases				(68,236)			$ (68,236)
Common stock repurchases (in shares)	(1,855,714)						(1,855,714)
Cash dividends			(13,956)				$ (13,956)
Distribution to non-controlling interest						(677)	(677)
Deconsolidation of VIEs						$ (132)	(132)
Balances at Jan. 31, 2023	$ 2,374	$ 162,208	$ 207,832	$ (88,641)	$ (2,876)		$ 280,897
Balances (in shares) at Jan. 31, 2023	13,441,590