CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (loss) [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2009	$ 710	$ 733,378	$ 4,051	$ (440,300)	$ 297,839
Balance (in shares) at Dec. 31, 2009	71,000
Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units (in shares)	(422)
Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units	(4)	(1,178)	0	0	(1,182)
Share-based compensation expense	0	9,910	0	0	9,910
Income tax benefit from share-based compensation	0	96	0	0	96
Net change in other comprehensive income (loss), net of tax	0	0	(2,675)	0	(2,675)
Net loss	0	0	0	(10,233)	(10,233)
Balance at Dec. 31, 2010	706	742,206	1,376	(450,533)	293,755
Balance (in shares) at Dec. 31, 2010	70,578
Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units (in shares)	(124)
Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units	(2)	(681)	0	0	(683)
Share-based compensation expense	0	8,771	0	0	8,771
Income tax benefit from share-based compensation	0	36	0	0	36
Net change in other comprehensive income (loss), net of tax	0	0	1,116	0	1,116
Net loss	0	0	0	(28,161)	(28,161)
Balance at Dec. 31, 2011	704	750,332	2,492	(478,694)	274,834
Balance (in shares) at Dec. 31, 2011	70,454
Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units (in shares)	271
Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units	5	(756)	0	0	(751)
Stock issued, ESPP (in shares)	305
Stock issued, ESPP	1	1,026	0	0	1,027
Share-based compensation expense	0	8,947	0	0	8,947
Income tax benefit from share-based compensation	0		0	0	0
Net change in other comprehensive income (loss), net of tax	0	0	3,810	0	3,810
Net loss	0	0	0	(10,696)	(10,696)
Balance at Dec. 31, 2012	$ 710	$ 759,549	$ 6,302	$ (489,390)	$ 277,171
Balance (in shares) at Dec. 31, 2012	71,030