Condensed Consolidated Statement Of Stockholders' Equity (USD $) In Thousands	Common Stock [Member]	Preferred Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income [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						12,500	12,500
Foreign currency translation adjustment					(25)		(25)
Comprehensive income							12,475
Sale of common stock, net of issuance cost				29,438			29,438
Sale of common stock, net of issuance cost, 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				109			109
Stock options exercised, shares	47
Restricted stock granted
Restricted stock granted, shares	1,076
Restricted stock forfeited			2
Treasury stock purchased			(199)				(199)
Treasury stock purchased, shares			23
Excess tax benefit related to share-based awards				229			229
Stock compensation expense				2,698			2,698
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 Jun. 30, 2011	$ 5		$ (1,091)	$ 161,484	$ 72	$ (105,718)	$ 54,752
Balance, shares at Jun. 30, 2011	51,553		590