Consolidated Statements Of Stockholders' Equity And Comprehensive Income (Loss) (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Deficit) [Member]	Total
Balance at Jan. 31, 2009	$ 985	$ 510,379	$ 1,408	$ (385,223)	$ 127,549
Balance, shares at Jan. 31, 2009	98,537,147
Components of comprehensive income (loss):
Net (loss) income				(13,022)	(13,022)
Common stock options exercised		21			21
Common stock options exercised, shares	6,028
Change in foreign currency translation			(1,390)		(1,390)
Total comprehensive income (loss)					(14,412)
Repurchase of common stock		(212)			(212)
Repurchase of common stock, shares	(61,534)
Repurchases of option rights under employee stock option plan		(577)			(577)
Cash option exchange		(84)			(84)
Amortization of stock-based compensation		2,854			2,854
Tax shortfall from employee stock plans		(173)			(173)
Balance at Jan. 31, 2010	985	512,208	18	(398,245)	114,966
Balance, shares at Jan. 31, 2010	98,481,641
Components of comprehensive income (loss):
Net (loss) income				(9,556)	(9,556)
Common stock options exercised		24			24
Common stock options exercised, shares	20,665
Change in foreign currency translation			(537)		(537)
Currency translation gain from liquidation of foreign entities included in net loss			(381)		(381)
Total comprehensive income (loss)					(10,474)
Repurchase of common stock	(1)	(346)			(347)
Repurchase of common stock, shares	(112,681)
Repurchases of option rights under employee stock option plan		(61)			(61)
Amortization of stock-based compensation		3,585			3,585
Tax shortfall from employee stock plans		(228)			(228)
Balance at Jan. 31, 2011	984	515,182	(900)	(407,801)	107,465
Balance, shares at Jan. 31, 2011	98,389,625
Components of comprehensive income (loss):
Net (loss) income				8,944	8,944
Common stock options exercised		3			3
Common stock options exercised, shares	2,853
Change in foreign currency translation			(673)		(673)
Total comprehensive income (loss)					8,271
Repurchases of option rights under employee stock option plan		(2)			(2)
Amortization of stock-based compensation		1,395			1,395
Balance at Jan. 31, 2012	$ 984	$ 516,578	$ (1,573)	$ (398,857)	$ 117,132
Balance, shares at Jan. 31, 2012	98,392,478