Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Preferred Stock [Member]	Additional Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2008	$ 1,225		$ 342,378	$ (346,426)	$ 0	$ (2,823)
Comprehensive (loss) income:
Net income (loss)				118,350		118,350
Unrealized gain (loss) on investment					445	445
Comprehensive (loss) income						118,795
Net income (loss)				118,350		118,350
Issuance of 292,745 shares of common stock for warrant exercises	29		3,462	0	0	3,491
Issuance of 325,314 shares of common stock upon issuance of restricted stock awards	33		1,396	0	0	1,429
Issuance of 53,365 shares of common stock upon exercise of stock options	5		575	0	0	580
Issuance of 99,985 shares of common stock upon conversion of notes	10		1,285			1,295
Stock compensation expense	0		1,147	0	0	1,147
Issuance of 39,042 shares of common stock upon issuance of restricted stock awards	33		1,396	0	0	1,429
Issuance of 5,200 shares of common stock upon exercise of stock options	5		575	0	0	580
Balance at Dec. 31, 2009	1,302		350,243	(228,076)	445	123,914
Comprehensive (loss) income:
Net income (loss)				(6,434)		(6,434)
Unrealized gain (loss) on investment					548	548
Comprehensive (loss) income						(5,886)
Net income (loss)				(6,434)		(6,434)
Issuance of 325,314 shares of common stock upon issuance of restricted stock awards	4		0	0	0	4
Issuance of 2,593,882 shares of common stock upon merger	259		18,160	0	0	18,419
Issuance of 9,174,589 shares of preferred stock upon merger		918	55,108	0	0	56,026
Stock compensation expense	0		366	0	0	366
Issuance of 39,042 shares of common stock upon issuance of restricted stock awards	4		0	0	0	4
Balance at Dec. 31, 2010	1,565	918	423,877	(234,510)	993	192,843
Comprehensive (loss) income:
Net income (loss)				(59,664)		(59,664)
Unrealized gain (loss) on investment					(543)	(543)
Comprehensive (loss) income						(60,207)
Net income (loss)				(59,664)		(59,664)
Issuance of 53,365 shares of common stock upon exercise of stock options	0		32	0	0	32
Conversion of 9,174,589 shares of preferred stock into common stock	918	(918)		0	0	0
Stock compensation expense	0		1,599	0	0	1,599
1 for 10 reverse stock split	(2,235)		2,235
Issuance of 5,200 shares of common stock upon exercise of stock options	0		32	0	0	32
Balance at Dec. 31, 2011	$ 248	$ 0	$ 427,743	$ (294,174)	$ 450	$ 134,267