Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Deficit	Total
Beginning Balance at Dec. 31, 2014	$ 435	$ 369,920	$ (12,635)	$ (15,067)	$ 342,653
Beginning Balance (in shares) at Dec. 31, 2014	43,500,032
Issuances of restricted stock		(3,779)	3,779
Amortization of share-based compensation		3,969			3,969
Purchase of treasury stock			(4,490)		(4,490)
Exercise of stock options		(4,628)	2,584		(2,044)
Net loss				(32,624)	(32,624)
Ending Balance at Mar. 31, 2015	$ 435	$ 365,482	$ (10,762)	$ (47,691)	$ 307,464
Ending Balance (in shares) at Mar. 31, 2015	43,500,032