Condensed Consolidated Statement Of Stockholders' Equity (Deficit) (USD $) In Thousands	Common Stock [Member]	Preferred Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2010	$ 4	$ 7,280	$ (892)	$ 103,408	$ 97	$ (113,350)	$ (3,453)
Balance, shares at Dec. 31, 2010	36,754	11	565
Net income						30,417	30,417
Foreign currency translation adjustment					(120)		(120)
Comprehensive income							30,297
Sale of common stock, net of issuance costs				29,438			29,438
Sale of common stock, net of issuance costs, shares	3,665
Common stock issued in payment of term loan debt				1,398			1,398
Common stock issued in payment of term loan debt, shares	171
Common stock issued in payment of convertible notes				5,165			5,165
Common stock issued in payment of convertible notes, shares	559
Accretion of discount on preferred stock		3,925				(3,925)
Preferred stock dividends, net of forfeitures						(943)	(943)
Common stock issued in payment of preferred stock dividends				3,254			3,254
Common stock issued in payment of preferred stock dividends, shares	624
Stock warrants exercised				4,581			4,581
Stock warrants exercised, shares	3,785
Stock options exercised				136			136
Stock options exercised, shares	58
Restricted stock granted, shares	1,087
Restricted stock forfeited, shares			3
Treasury stock purchased			(205)				(205)
Treasury stock purchased, shares			24
Excess tax benefit related to share-based awards				556			556
Stock compensation expense				4,810			4,810
Conversion of preferred stock into common stock	1	(11,205)		11,204
Conversion of preferred stock into common stock, shares	(4,872)	(11)
Balance at Sep. 30, 2011	$ 5		$ (1,097)	$ 163,950	$ (23)	$ (87,801)	$ 75,034
Balance, shares at Sep. 30, 2011	51,575		592