Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Jan. 31, 2009	$ 102,036	$ 119	$ 36,651	$ 79,951	$ (67)	$ (14,618)
Beginning balance, shares at Jan. 31, 2009		11,944,544				2,177,726
Issuance of stock to directors	50		(24)			74
Issuance of stock to directors, shares						(11,250)
Purchase of treasury stock, shares						318,896
Purchase of treasury stock	(1,287)					(1,287)
Exercise of stock options, vesting of restricted stock units and other, net of taxes	18		(11)			29
Exercise of stock options, vesting of restricted stock units and other, net of taxes, shares						(4,666)
Other stock-based compensation	304		304
Net income (loss)	6,933			6,933
Other comprehensive income	104				104
Ending balance at Jan. 31, 2010	108,158	119	36,920	86,884	37	(15,802)
Ending balance, shares at Jan. 31, 2010		11,944,544				2,480,706
Issuance of stock to directors	50		8			42
Issuance of stock to directors, shares						(6,525)
Purchase of treasury stock, shares						939,795
Purchase of treasury stock	(6,376)					(6,376)
Exercise of stock options, vesting of restricted stock units and other, net of taxes	420		(954)			1,374
Exercise of stock options, vesting of restricted stock units and other, net of taxes, shares						(212,982)
Other stock-based compensation	699		699
Net income (loss)	1,705			1,705
Other comprehensive income	70				70
Ending balance at Jan. 31, 2011	104,726	119	36,673	88,589	107	(20,762)
Ending balance, shares at Jan. 31, 2011		11,944,544				3,200,994
Issuance of stock to directors	40		(23)			63
Issuance of stock to directors, shares						(9,852)
Purchase of treasury stock, shares						665,109
Purchase of treasury stock	(1,992)					(1,992)
Exercise of stock options, vesting of restricted stock units and other, net of taxes	(166)		(1,437)			1,271
Exercise of stock options, vesting of restricted stock units and other, net of taxes, shares						(203,854)
Other stock-based compensation	1,018		1,018
Net income (loss)	(17,579)			(17,579)
Other comprehensive income	11				11
Ending balance at Jan. 31, 2012	$ 86,058	$ 119	$ 36,231	$ 71,010	$ 118	$ (21,420)
Ending balance, shares at Jan. 31, 2012		11,944,544				3,652,397