Consolidated Statements of Stockholders' Equity - 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, 2015	16,152	3,537	(1,610)
Balance at Jan. 31, 2015	$ 16	$ 4	$ (22,977)	$ 185,546	$ (44,606)	$ (7,418)			$ 110,565
Net (loss) income					8,912		$ 7,606	$ 1,306	8,912
Foreign currency translation adjustment						(1,311)			(1,311)
Stock award exercises (in shares)			105
Stock award exercises			$ 2,207	(3,289)	(9)				(1,091)
Stock-based compensation income tax benefits				736					736
Stock compensation expense				7,440					7,440
Dividends declared ($0.288 and $0.24 per Class A and Class B share, respectively)					(5,235)				(5,235)
Proceeds from stock issuance, net of costs (in shares)	450
Proceeds from stock issuance, net of costs				8,365					8,365
Restricted stock (in shares)	2		139
Restricted stock			$ 2,053	(3,378)	(45)				(1,370)
Balance (in shares) (Scenario, Previously Reported [Member]) at Jan. 31, 2016	16,604	3,537	(1,366)
Balance (in shares) at Jan. 31, 2016	16,604	3,537	(1,366)
Balance (Scenario, Previously Reported [Member]) at Jan. 31, 2016	$ 16	$ 4	$ (18,717)	195,420	(40,983)	(8,729)			127,011
Balance (Restatement Adjustment [Member])				388	607				995
Balance at Jan. 31, 2016	$ 16	$ 4	$ (18,717)	195,808	(40,376)	(8,729)			128,006
Net (loss) income					(15,450)		(13,211)	(2,239)	(15,450)
Foreign currency translation adjustment						98			98
Stock award exercises (in shares)			59
Stock award exercises			$ 795	(1,406)					(611)
Stock-based compensation income tax benefits				89					89
Stock compensation expense				7,323					7,323
Dividends declared ($0.288 and $0.24 per Class A and Class B share, respectively)					(5,301)				(5,301)
Restricted stock (in shares)	1		182
Restricted stock			$ 2,752	(4,220)					(1,468)
Balance (in shares) at Jan. 31, 2017	16,605	3,537	(1,125)
Balance at Jan. 31, 2017	$ 16	$ 4	$ (15,170)	197,594	(61,127)	(8,631)			112,686
Net (loss) income					(9,065)		$ (7,762)	$ (1,303)	(9,065)
Foreign currency translation adjustment						1,803			1,803
Stock award exercises (in shares)			63
Stock award exercises			$ 1,129	(2,118)					(989)
Stock compensation expense				8,924					8,924
Dividends declared ($0.288 and $0.24 per Class A and Class B share, respectively)					(5,367)				(5,367)
Restricted stock (in shares)			170
Restricted stock			$ 1,580	(3,944)					(2,364)
Balance (in shares) at Jan. 31, 2018	16,605	3,537	(892)
Balance at Jan. 31, 2018	$ 16	$ 4	$ (12,461)	$ 200,456	$ (75,559)	$ (6,828)			$ 105,628