CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Revenue:
Royalties	$ 264,111		$ 232,385		$ 299,004
Contract and other revenue	7,390		1,666		13,359
Total revenue	271,501		234,051		312,363
Operating costs and expenses:
Cost of revenue	33,215	[1]	28,372	[1]	24,085	[1]
Research and development	117,981	[1]	140,503	[1]	115,696	[1]
Marketing, general and administrative	76,448	[1]	112,594	[1]	164,131	[1]
Restructuring costs	5,546		7,301		0
Impairment of goodwill and long-lived assets	17,751		35,471		0
Gain from sale of intellectual property	(1,388)		0		0
Gain from settlement	(535)		0		(6,200)
Costs of restatement and related legal activities, net	19		244		16,187
Total operating costs and expenses	249,037		324,485		313,899
Operating income (loss)	22,464		(90,434)		(1,536)
Interest income and other income (expense), net	(1,596)		59		563
Interest expense	(32,885)		(27,510)		(24,828)
Interest and other income (expense), net	(34,481)		(27,451)		(24,265)
Loss before income taxes	(12,017)		(117,885)		(25,801)
Provision for income taxes	21,731		16,451		17,252
Net loss	$ (33,748)		$ (134,336)		$ (43,053)
Net loss per share:
Basic (in dollars per share)	$ (0.30)		$ (1.21)		$ (0.39)
Diluted (in dollars per share)	$ (0.30)		$ (1.21)		$ (0.39)
Weighted average shares used in per share calculations:
Basic (in shares)	112,415		110,769		110,041
Diluted (in shares)	112,415		110,769		110,041

[1] * Includes stock-based compensation: Cost of revenue$19 $20 $575Research and development$6,597 $9,546 $10,519Marketing, general and administrative$8,365 $12,980 $16,902