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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Per Share data
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Revenue:        
Royalties $ 60,970 $ 38,192 $ 120,205 $ 198,734
Contract revenue 5,244 670 8,536 1,992
Total revenue 66,214 38,862 128,741 200,726
Operating costs and expenses:        
Cost of revenue 6,058 [1] 1,804 [1] 9,207 [1] 3,658 [1]
Research and development 24,220 [2] 22,985 [2] 47,537 [2] 44,676 [2]
Marketing, general and administrative 37,732 [3] 29,408 [3] 70,464 [3] 60,935 [3]
Costs of restatement and related legal activities 712 1,638 1,871 2,164
Gain from settlement   (10,300) (6,200) (106,200)
Total operating costs and expenses 68,722 45,535 122,879 5,233
Operating income (loss) (2,508) (6,673) 5,862 195,493
Interest income and other income (expense), net (777) 316 (1,429) 741
Interest expense on convertible notes (5,212) (3,740) (10,384) (9,756)
Interest and other income (expense), net (5,989) (3,424) (11,813) (9,015)
Income (loss) before income taxes (8,497) (10,097) (5,951) 186,478
Provision for income taxes 2,088 2,393 8,864 48,069
Net income (loss) $ (10,585) $ (12,490) $ (14,815) $ 138,409
Net income (loss) per share:        
Basic (in dollars per share) $ (0.10) $ (0.11) $ (0.14) $ 1.22
Diluted (in dollars per share) $ (0.10) $ (0.11) $ (0.14) $ 1.18
Weighted average shares used in per share calculation:        
Basic (in shares) 109,992 113,321 108,809 113,227
Diluted (in shares) 109,992 113,321 108,809 117,434
[1] Cost of revenue includes stock-based compensation of $286 and $29 for three months ended June 30, 2011 and 2010 and $409 and $129 for six months ended June 30, 2011 and 2010 respectively.
[2] Research and development includes stock-based compensation of $2,490 and $2,703 for three months ended June 30, 2011 and 2010 and $5,002 and $5,272 for six months ended June 30, 2011 and 2010 respectively.
[3] Marketing, general and administrative includes stock-based compensation of $4,253 and $5,199 for three months ended June 30, 2011 and 2010 and $8,908 and $10,364 for six months ended June 30, 2011 and 2010 respectively.