Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Jan. 31, 2010	$ 116,446	$ 985	$ 512,208	$ 18	$ (396,765)
Beginning balance, shares at Jan. 31, 2010		98,481,641
Net income/loss	(9,267)				(9,267)
Foreign currency translation adjustments	(918)			(918)
Common stock options exercised	24		24
Common stock options exercised, shares	62,337	20,665
Repurchase of common stock	(347)	(1)	(346)
Repurchase of common stock, shares		(112,681)
Repurchases of option rights in connection with stock options exercised	(61)		(61)
Amortization of stock- based compensation	3,585		3,585
Tax shortfall/benefit from employee stock plans	(228)		(228)
Ending balance at Jan. 31, 2011	109,234	984	515,182	(900)	(406,032)
Ending balance, shares at Jan. 31, 2011		98,389,625
Net income/loss	8,944				8,944
Foreign currency translation adjustments	(673)			(673)
Common stock options exercised	3		3
Common stock options exercised, shares	3,882	2,853
Repurchases of option rights in connection with stock options exercised	(2)		(2)
Amortization of stock- based compensation	1,395		1,395
Ending balance at Jan. 31, 2012	118,901	984	516,578	(1,573)	(397,088)
Ending balance, shares at Jan. 31, 2012		98,392,478
Net income/loss	2,483				2,483
Foreign currency translation adjustments	(236)			(236)
Common stock options exercised	48		48
Common stock options exercised, shares	127,373	55,364
Repurchases of option rights in connection with stock options exercised	(157)		(157)
Restricted stock units released and net shares issued, shares		636,631
Restricted stock units released and net shares issued	1	10	(9)
Repurchases of common stock in connection with restricted stock units released	(1,248)	(3)	(1,245)
Amortization of stock- based compensation	1,613		1,613
Tax shortfall/benefit from employee stock plans	158		158
Ending balance at Jan. 31, 2013	$ 121,563	$ 991	$ 516,986	$ (1,809)	$ (394,605)
Ending balance, shares at Jan. 31, 2013		99,084,473