Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Common Class A [Member]	Common Class B [Member]	Total
Balance (in shares) at Jan. 31, 2020	17,109	3,537	(216)
Balance at Jan. 31, 2020	$ 17	$ 4	$ (3,226)	$ 197,824	$ (70,209)	$ (8,345)			$ 116,065
Net income (loss)	0	0	0	0	(410)	0	$ (353)	$ (57)	(410)
Foreign currency translation adjustments	0	0	0	0	0	(2,655)			(2,655)
Stock award exercises		0		(11)	0	0			(11)
Stock compensation expense	0	0	0	2,405	0	0			2,405
Dividends declared	$ 0	$ 0	$ 0	0	(1,431)	0			(1,431)
Restricted stock (in shares)	4	0
Restricted stock	$ 0	$ 0	$ 0	(92)	0	0			(92)
Balance (in shares) at Apr. 30, 2020	17,113	3,537	(216)
Balance at Apr. 30, 2020	$ 17	$ 4	$ (3,226)	200,126	(72,050)	(11,000)			113,871
Balance (in shares) at Jan. 31, 2021	17,375	3,537	(207)
Balance at Jan. 31, 2021	$ 17	$ 4	$ (3,073)	205,630	(64,924)	(8,188)			129,466
Net income (loss)	0	0	0	0	1,832	0	$ 1,580	$ 252	1,832
Foreign currency translation adjustments	0	0	0	0	0	(161)			(161)
Stock award exercises	0	0		0	0	0			0
Stock compensation expense	0	0	0	3,637	0	0			3,637
Dividends declared	$ 0	$ 0	$ 0	0	(1,454)	0			(1,454)
Restricted stock (in shares)	6	0	0
Restricted stock	$ 0	$ 0	$ 0	(183)	0	0			(183)
Balance (in shares) at Apr. 30, 2021	17,381	3,537	(207)
Balance at Apr. 30, 2021	$ 17	$ 4	$ (3,073)	$ 209,084	$ (64,546)	$ (8,349)			$ 133,137