Consolidated Statement of Stockholder's Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Lease Guarantee	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Total stockholders' equity, Beginning balance at Dec. 31, 2010	$ 247,646	$ 6	$ 457,883	$ (336)	$ (11,340)	$ (199,973)	$ 1,406
Treasury stock, Balance (shares) at Dec. 31, 2010					998,000
Common stock, Balance (shares) at Dec. 31, 2010		56,733,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,765					1,765
Other comprehensive loss	(1,608)						(1,608)
Change in value of lease guarantee	63			63
Share-based compensation	5,572
Stock-based compensation expense	5,572		5,572
Excess tax benefit from exercise of stock options	169		169
Repurchase of common stock (shares)					877,000
Payments for Repurchase of Common Stock	7,000
Repurchase of common stock	(7,000)				(7,000)
Issuance of common stock upon exercise of stock options and under employee stock purchase plan, net of shares tendered (shares)		855,000
Issuance of common stock upon exercise of stock options and under employee stock purchase plan, net of shares tendered	2,077		2,077
Total stockholders' equity, Ending balance at Dec. 31, 2011	248,684	6	465,701	(273)	(18,340)	(198,208)	(202)
Treasury stock, Balance (shares) at Dec. 31, 2011					1,875,000
Common stock, Balance (shares) at Dec. 31, 2011		57,588,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(10,402)
Other comprehensive loss	1,466						1,466
Change in value of lease guarantee	63			63
Share-based compensation	8,115
Stock-based compensation expense	8,115		8,115
Excess tax benefit from exercise of stock options	19		19
Repurchase of common stock (shares)					1,374,000
Payments for Repurchase of Common Stock	11,290
Repurchase of common stock	(11,290)				(11,290)
Retirement of treasury stock (shares)		(3,249,000)			(3,249,000)
Retirement of treasury stock	0				29,630	(29,630)
Issuance of common stock upon exercise of stock options and under employee stock purchase plan, net of shares tendered (shares)		1,540,000
Issuance of common stock upon exercise of stock options and under employee stock purchase plan, net of shares tendered	6,166		6,166
Total stockholders' equity, Ending balance at Dec. 31, 2012	242,821	6	480,001	(210)	0	(238,240)	1,264
Treasury stock, Balance (shares) at Dec. 31, 2012					0
Common stock, Balance (shares) at Dec. 31, 2012	55,879,000	55,879,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,690
Other comprehensive loss	1,424						1,424
Change in value of lease guarantee	63			63
Share-based compensation	9,019
Stock-based compensation expense	9,019
Excess tax benefit from exercise of stock options	0		0
Repurchase of common stock (shares)					1,651,000
Payments for Repurchase of Common Stock	15,047
Repurchase of common stock	(15,047)
Retirement of treasury stock (shares)	(1,650,525)	(1,651,000)			(1,651,000)
Retirement of treasury stock	0				15,047	(15,047)
Issuance of common stock upon exercise of stock options and under employee stock purchase plan, net of shares tendered (shares)		1,485,000
Issuance of common stock upon exercise of stock options and under employee stock purchase plan, net of shares tendered	4,489		4,489
Total stockholders' equity, Ending balance at Dec. 31, 2013	$ 248,459	$ 6	$ 493,509	$ (147)	$ 0	$ (247,597)	$ 2,688
Treasury stock, Balance (shares) at Dec. 31, 2013					0
Common stock, Balance (shares) at Dec. 31, 2013	55,713,000	55,713,000