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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Net revenue |  |  |
Licensing and other | $ 1,340 | $ 5,987 | $ 6,468
Royalty | 4,742 | 8,120 | 9,095
Total net revenue | 6,082 | 14,107 | 15,563
Cost of net revenue |  |  |
Licensing and other | 334 | 3,295 | 2,826
Total cost of net revenue | 334 | 3,295 | 2,826
Gross profit | 5,748 | 10,812 | 12,737
Operating expenses |  |  |
Research and development | 28,480 | 26,216 | 25,534
Selling, general and administrative | 8,218 | 8,869 | 10,391
Gain on sale of assets | (3,291) | (35,611) |
Total operating expenses | 33,407 | (526) | 35,925
Income (loss) from operations | (27,659) | 11,338 | (23,188)
Other income and expense, net | 155 | 206 | 177
Income (loss) before income taxes | (27,504) | 11,544 | (23,011)
Income tax provision | 110 | 288 | 51
Net income (loss) | (27,614) | 11,256 | (23,062)
Other comprehensive income (loss), net of tax: |  |  |
Net unrealized gains (losses) on available-for-sale securities | 10 | (3) | (37)
Comprehensive income (loss) | $ (27,604) | $ 11,253 | $ (23,099)
Net income (loss) per share |  |  |
Basic (in dollars per share) | $ (0.70) | $ 0.30 | $ (0.72)
Diluted (in dollars per share) | $ (0.70) | $ 0.28 | $ (0.72)
Shares used in computing net income (loss) per share |  |  |
Basic (in shares) | 39,176 | 37,861 | 31,870
Diluted (in shares) | 39,176 | 40,377 | 31,870

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