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)			(35,501)		2,007	(33,494)
Foreign currency translation loss				(825)		(825)
Stock compensation expense		1,512				1,512
Stock option exercises	$ 9	1,558				$ 1,567
Stock option exercises (in shares)	59,433					59,000
Cash dividends			(11,714)			$ (11,714)
Balances at Oct. 31, 2019	$ 2,346	148,031	200,401	(1,171)	1,811	351,418
Balances (in shares) at Oct. 31, 2019	15,633,302
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
Net income (loss)			(6,855)		2,294	(4,561)
Foreign currency translation loss				235		235
Stock compensation expense		586				586
Cash dividends			(3,911)			(3,911)
Balances at Oct. 31, 2019	$ 2,346	148,031	200,401	(1,171)	1,811	351,418
Balances (in shares) at Oct. 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)			14,300		(40)	14,260
Foreign currency translation loss				(650)		(650)
Stock compensation expense		2,199				2,199
Stock option exercises	$ 8	1,237				$ 1,245
Stock option exercises (in shares)	55,000					55,000
Cash dividends			(27,420)			$ (27,420)
Balances at Oct. 31, 2020	$ 2,354	152,149	176,186	(1,766)	1,741	330,664
Balances (in shares) at Oct. 31, 2020	15,689,969
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
Net income (loss)			9,454			9,454
Foreign currency translation loss				(321)		(321)
Stock compensation expense		786				786
Stock option exercises	$ 3	516				519
Stock option exercises (in shares)	20,000
Cash dividends			(3,921)			(3,921)
Balances at Oct. 31, 2020	$ 2,354	$ 152,149	$ 176,186	$ (1,766)	$ 1,741	$ 330,664
Balances (in shares) at Oct. 31, 2020	15,689,969