Condensed Consolidated Statement of Stockholders' Equity (Deficit) (Unaudited) (USD $) In Thousands, except Share data	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2011	$ 78,298	$ 5	$ (1,667)	$ 166,814	$ (44)	$ (86,810)
Beginning balance, shares at Dec. 31, 2011		51,958	1,358
Net income	16,784					16,784
Other comprehensive loss	(28)				(28)
Stock Issued During Period Value Exercise of Warrant Securities	(263)			(263)
Stock warrants exercised, shares		217
Fair value of warrant liability reclassified to additional paid-in-capital	13,973			13,973
Stock options exercised	131			131
Stock options exercised, shares		38
Treasury Stock, Value, Acquired, Cost Method	(490)		(490)
Treasury stock purchased, shares			40
Restricted stock granted, shares		660
Restricted stock forfeited, shares			7
Excess tax benefit related to share-based awards	518			518
Stock compensation expense	5,877			5,877
Ending balance at Jun. 30, 2012	$ 115,326	$ 5	$ (2,157)	$ 187,576	$ (72)	$ (70,026)
Ending balance, shares at Jun. 30, 2012		52,873	1,405