CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interests	Total
Balances at Jan. 31, 2019	$ 2,337	$ 144,961	$ 247,616	$ (346)	$ (196)	$ 394,372
Balances (in shares) at Jan. 31, 2019	15,573,869
Net income (loss)			(28,646)		(287)	(28,933)
Foreign currency translation loss				(1,060)		(1,060)
Stock compensation expense		926				926
Stock option exercises	$ 9	1,558				$ 1,567
Stock option exercises (in shares)	59,433					59,000
Cash dividends			(7,803)			$ (7,803)
Balances at Jul. 31, 2019	$ 2,346	147,445	211,167	(1,406)	(483)	359,069
Balances (in shares) at Jul. 31, 2019	15,633,302
Balances at Apr. 30, 2019	$ 2,346	146,932	213,921	(1,400)	(309)	361,490
Balances (in shares) at Apr. 30, 2019	15,633,302
Net income (loss)			1,154		(174)	980
Foreign currency translation loss				(6)		(6)
Stock compensation expense		513				513
Cash dividends			(3,908)			(3,908)
Balances at Jul. 31, 2019	$ 2,346	147,445	211,167	(1,406)	(483)	359,069
Balances (in shares) at Jul. 31, 2019	15,633,302
Balances at Jan. 31, 2020	$ 2,346	148,713	189,306	(1,116)	1,781	341,030
Balances (in shares) at Jan. 31, 2020	15,634,969
Net income (loss)			4,846		(40)	4,806
Foreign currency translation loss				(329)		(329)
Stock compensation expense		1,414				1,414
Stock option exercises	$ 5	720				$ 725
Stock option exercises (in shares)	35,000					35,000
Cash dividends			(23,499)			$ (23,499)
Balances at Jul. 31, 2020	$ 2,351	150,847	170,653	(1,445)	1,741	324,147
Balances (in shares) at Jul. 31, 2020	15,669,969
Balances at Apr. 30, 2020	$ 2,347	149,531	184,633	(1,362)	1,751	336,900
Balances (in shares) at Apr. 30, 2020	15,644,969
Net income (loss)			5,609		(10)	5,599
Foreign currency translation loss				(83)		(83)
Stock compensation expense		772				772
Stock option exercises	$ 4	544				548
Stock option exercises (in shares)	25,000
Cash dividends			(19,589)			(19,589)
Balances at Jul. 31, 2020	$ 2,351	$ 150,847	$ 170,653	$ (1,445)	$ 1,741	$ 324,147
Balances (in shares) at Jul. 31, 2020	15,669,969