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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Revenue: |  |  |  |
Royalties | $ 66,222 |  | $ 62,043 |
Contract revenue | 644 |  | 820 |
Total revenue | 66,866 |  | 62,863 |
Operating costs and expenses: |  |  |  |
Cost of revenue | 5,249 | [1] | 7,163 | [1]
Research and development | 32,848 | [1] | 38,394 | [1]
Marketing, general and administrative | 25,105 | [1] | 34,834 | [1]
Restructuring charges | 2,206 |  | 0 |
Costs of restatement and related legal activities | 17 |  | 30 |
Total operating costs and expenses | 65,425 |  | 80,421 |
Operating income (loss) | 1,441 |  | (17,558) |
Interest income and other income (expense), net | (20) |  | 98 |
Interest expense | (7,312) |  | (6,580) |
Interest and other income (expense), net | (7,332) |  | (6,482) |
Loss before income taxes | (5,891) |  | (24,040) |
Provision for income taxes | 4,511 |  | 3,850 |
Net loss | $ (10,402) |  | $ (27,890) |
Net loss per share: |  |  |  |
Basic (in dollars per share) | $ (0.09) |  | $ (0.25) |
Diluted (in dollars per share) | $ (0.09) |  | $ (0.25) |
Weighted average shares used in per share calculation: |  |  |  |
Basic (in shares) | 111,599 |  | 110,358 |
Diluted (in shares) | 111,599 |  | 110,358 |
[1] | Includes stock-based compensation

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Period Type: | duration