Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional paid-in capital	Treasury Stock	Accumulated other comprehensive income (loss)	Accumulated deficit	Total
Stockholders' equity, beginning balance at Dec. 31, 2015	$ 2	$ 505,603	$ (30,767)	$ (91)	$ (395,627)	$ 79,120
Common stock shares outstanding, beginning balance at Dec. 31, 2015	20,154					20,154
Issuance of stock under employee stock awards and other, net		1				$ 1
Issuance of stock under employee stock awards and other, net, shares	133
Tax withholdings related to vesting of share-based payments		(492)				(492)
Stock-based compensation		2,035				2,035
Foreign currency translation adjustment				1		1
Net loss					(11,909)	(11,909)
Stockholders' equity ending balance at Mar. 31, 2016	$ 2	$ 507,147	$ (30,767)	$ (90)	$ (407,536)	$ 68,756
Common stock shares outstanding, ending balance at Mar. 31, 2016	20,287					20,287