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, 2018	16,605	3,537	(892)
Balance at Jan. 31, 2018	$ 16	$ 4	$ (12,461)	$ 200,456	$ (75,559)	$ (6,828)			$ 105,628
Net income (loss)					5,492		$ 4,707	$ 785	5,492
Foreign currency translation adjustments						(2,010)			(2,010)
Stock award exercises (in shares)			194
Stock award exercises			$ 3,401	(7,819)					(4,418)
Stock compensation expense				7,618					7,618
Dividends declared ($0.216 and $0.18 per Class A and Class B share, respectively)					(4,105)				(4,105)
Restricted stock (in shares)			181
Restricted stock			$ 1,676	(5,963)					(4,287)
Adjusted balance at Jan. 31, 2018	$ 16	$ 4	$ (12,461)	200,456	(53,434)	(6,828)			127,753
Balance (in shares) at Oct. 31, 2018	16,605	3,537	(517)
Balance at Oct. 31, 2018	$ 16	$ 4	$ (7,384)	194,292	(52,047)	(8,838)			126,043
Cumulative effect of the adoption of ASC					22,125				22,125
Balance (in shares) at Jan. 31, 2019	16,605	3,537	(515)
Balance at Jan. 31, 2019	$ 16	$ 4	$ (7,350)	196,723	(48,485)	(7,661)			133,247
Net income (loss)					(16,359)		$ (14,045)	$ (2,314)	(16,359)
Foreign currency translation adjustments						(278)			(278)
Stock award exercises (in shares)	421		126
Stock award exercises	$ 1		$ 1,943	(2,164)					(220)
Stock compensation expense				8,396					8,396
Dividends declared ($0.216 and $0.18 per Class A and Class B share, respectively)					(4,187)				(4,187)
Restricted stock (in shares)	4		173
Restricted stock			$ 2,182	(5,534)					(3,352)
Balance (in shares) at Oct. 31, 2019	17,030	3,537	(216)
Balance at Oct. 31, 2019	$ 17	$ 4	$ (3,225)	197,421	(69,204)	(7,939)			117,074
Cumulative effect of the adoption of ASC					$ (173)				$ (173)