Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings (Deficit)	Total
Beginning Balance at Dec. 31, 2011	$ 425	$ 347,626		$ 9,617	$ 357,668
Beginning Balance (in shares) at Dec. 31, 2011	42,530,809
Issuances of restricted stock	10	(526)	516
Issuances of restricted stock (in shares)	969,223
Amortization of share-based compensation		12,855			12,855
Purchase of treasury stock			(18,497)		(18,497)
Exercise of stock options / vesting of restricted stock		(795)	1,593		798
Net income (loss)				19,586	19,586
Ending Balance at Dec. 31, 2012	435	359,160	(16,388)	29,203	372,410
Ending Balance (in shares) at Dec. 31, 2012	43,500,032
Issuances of restricted stock		(6,751)	6,751
Amortization of share-based compensation		11,830			11,830
Purchase of treasury stock			(3,605)		(3,605)
Exercise of stock options / vesting of restricted stock		(565)	1,146		581
Net income (loss)				(35,929)	(35,929)
Ending Balance at Dec. 31, 2013	435	363,674	(12,096)	(6,726)	345,287
Ending Balance (in shares) at Dec. 31, 2013	43,500,032
Issuances of restricted stock		(9,583)	9,583
Amortization of share-based compensation		14,714			14,714
Purchase of treasury stock			(12,733)		(12,733)
Exercise of stock options / vesting of restricted stock		1,115	2,611		3,726
Net income (loss)				(8,341)	(8,341)
Ending Balance at Dec. 31, 2014	$ 435	$ 369,920	$ (12,635)	$ (15,067)	$ 342,653
Ending Balance (in shares) at Dec. 31, 2014	43,500,032