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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Revenue:        
Royalties $ 57,361 $ 96,216 $ 175,127 $ 216,421
Contract revenue 169 4,047 1,481 12,583
Total revenue 57,530 100,263 176,608 229,004
Operating costs and expenses:        
Cost of revenue 7,529 7,425 22,032 16,632
Research and development 30,674 32,318 107,415 79,855
Marketing, general and administrative 24,255 48,952 91,283 119,416
Restructuring charges 6,622 0 6,622 0
Impairment of goodwill and long-lived assets 35,471 0 35,471 0
Costs of restatement and related legal activities 79 832 192 2,703
Gain from settlement 0 0 0 (6,200)
Total operating costs and expenses 104,630 89,527 263,015 212,406
Operating income (loss) (47,100) 10,736 (86,407) 16,598
Interest income and other income (expense), net (12) 172 175 471
Interest expense (7,121) (6,350) (20,420) (18,462)
Interest and other income (expense), net (7,133) (6,178) (20,245) (17,991)
Income (loss) before income taxes (54,233) 4,558 (106,652) (1,393)
Provision for income taxes 3,865 4,080 11,552 12,944
Net income (loss) $ (58,098) $ 478 $ (118,204) $ (14,337)
Net income (loss) per share:        
Basic (in dollars per share) $ (0.52) $ 0.00 $ (1.07) $ (0.13)
Diluted (in dollars per share) $ (0.52) $ 0.00 $ (1.07) $ (0.13)
Weighted average shares used in per share calculation:        
Basic (in shares) 110,826 112,334 110,580 109,997
Diluted (in shares) 110,826 115,552 110,580 109,997