Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Gain	Treasury Stock	Total	Noncontrolling Interest
Balance, value at Dec. 31, 2009								$ (290)
Balance, value at Dec. 31, 2009	163,497
Balance, value at Dec. 31, 2009		176	733,874	(570,175)	0	(88)	163,787
Balance, shares at Dec. 31, 2009		175,785,000
Deconsolidation of Symphony Icon, Inc.	290	0	0	0	0	0	0	290
Cumulative-effect adjustment for adoption of new accounting principle	(1,456)	0	0	(1,456)	0	0	(1,456)	0
Stock-based compensation	5,116	0	5,116	0	0	0	5,116	0
Issuance of common stock to designees of Symphony Icon Holdings LLC, value	0
Issuance of common stock under Equity Incentive Plans, shares		11,000
Issuance of common stock under Equity Incentive Plans, value	22	0	22	0	0	0	22	0
Issuance of common stock, net of fees, shares		161,770,000
Issuance of common stock, net of fees, value	181,474	162	181,312	0	0	0	181,474	0
Repurchase of common stock	(149)	0	0	0	0	(149)	(149)	0
Net loss	(101,775)	0	0	(101,775)	0	0	(101,775)
Net loss attributable to noncontrolling interest								0
Net loss including portion attributable to noncontrolling interest	(101,775)
Unrealized gain on investments	5	0	0	0	5	0	5	0
Balance, value at Dec. 31, 2010								0
Balance, value at Dec. 31, 2010	247,024
Balance, value at Dec. 31, 2010		338	920,324	(673,406)	5	(237)	247,024
Balance, shares at Dec. 31, 2010		337,566,000
Stock-based compensation	5,707	0	5,707	0	0	0	5,707	0
Issuance of common stock to designees of Symphony Icon Holdings LLC, value	0
Issuance of common stock under Equity Incentive Plans, shares		330,000
Issuance of common stock under Equity Incentive Plans, value	552	0	552	0	0	0	552	0
Issuance of common stock, net of fees, shares		142,493,000
Issuance of common stock, net of fees, value	160,592	142	160,450	0	0	0	160,592	0
Repurchase of common stock	(108)	0	0	0	0	(108)	(108)	0
Net loss	(116,215)	0	0	(116,215)	0	0	(116,215)
Net loss attributable to noncontrolling interest								0
Net loss including portion attributable to noncontrolling interest	(116,215)
Unrealized gain on investments	16	0	0	0	16	0	16	0
Balance, value at Dec. 31, 2011								0
Balance, value at Dec. 31, 2011	297,568
Balance, value at Dec. 31, 2011	297,568	480	1,087,033	(789,621)	21	(345)	297,568
Balance, shares at Dec. 31, 2011		480,389,000
Stock-based compensation	6,495	0	6,495	0	0	0	6,495	0
Issuance of common stock to designees of Symphony Icon Holdings LLC, shares		13,238,000
Issuance of common stock to designees of Symphony Icon Holdings LLC, value	35,000	13	34,987	0	0	0	35,000	0
Issuance of common stock under Equity Incentive Plans, shares		1,248,000
Issuance of common stock under Equity Incentive Plans, value	1,054	1	1,053	0	0	0	1,054	0
Issuance of common stock, net of fees, shares		17,500,000
Issuance of common stock, net of fees, value	37,055	18	37,037	0	0	0	37,055	0
Repurchase of common stock	(285)	0	0	0	0	(285)	(285)	0
Net loss	(110,211)	0	0	(110,211)	0	0	(110,211)
Net loss attributable to noncontrolling interest								0
Net loss including portion attributable to noncontrolling interest	(110,211)
Unrealized gain on investments	2	0	0	0	2	0	2	0
Balance, value at Dec. 31, 2012								0
Balance, value at Dec. 31, 2012	266,678
Balance, value at Dec. 31, 2012	$ 266,678	$ 512	$ 1,166,605	$ (899,832)	$ 23	$ (630)	$ 266,678
Balance, shares at Dec. 31, 2012		512,375,000