Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings	Total
Beginning Balance at Dec. 31, 2012	$ 435	$ 355,687	$ (16,388)	$ 34,513	$ 374,247
Beginning Balance (in shares) at Dec. 31, 2012	43,500,032
Issuances of restricted stock		(6,711)	6,711
Amortization of share-based compensation		6,129			6,129
Purchase of treasury stock			(3,528)		(3,528)
Exercise of stock options		(364)	665		301
Net loss				(21,574)	(21,574)
Ending Balance at Jun. 30, 2013	$ 435	$ 354,741	$ (12,540)	$ 12,939	$ 355,575
Ending Balance (in shares) at Jun. 30, 2013	43,500,032