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Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Consolidated Statements of Operations [Abstract] |  |  |
Revenues | $ 250,727 | $ 172,256 | $ 131,829
Cost of revenues: |  |  |
Inventor royalties | 26,028 | 43,727 | 25,292
Contingent legal fees | 24,651 | 40,281 | 19,906
Litigation and licensing expenses - patents | 21,591 | 13,005 | 13,891
Amortization of patents | 39,019 | 9,745 | 6,931
Verdict insurance proceeds | 0 | (12,451) | 0
Verdict insurance proceeds related costs | 0 | 7,661 | 0
Marketing, general and administrative expenses (including non-cash stock compensation expense of $25,657 in 2012, $13,579 in 2011, and $7,121 in 2010) | 54,083 | 35,693 | 25,067
Research, consulting and other expenses - business development | 4,943 | 4,338 | 2,121
Total operating costs and expenses | 170,315 | 141,999 | 93,208
Operating income (loss) | 80,412 | 30,257 | 38,621
Other Income | 500 | 0 | 0
Investment Income, Interest | 825 | 81 | 103
Asset Impairment Charges | (45) | 0 | 0
Gain (Loss) on Investments | (343) | 15 | 32
Total other income | 937 | 96 | 135
Income (loss) from operations before provision for income taxes | 81,349 | 30,353 | 38,756
Provision for income taxes | (22,060) | (8,708) | (1,740)
Net income (loss) including noncontrolling interests in operating subsidiaries | 59,289 | 21,645 | 37,016
Net loss (income) attributable to noncontrolling interests in operating subsidiaries | 164 | (539) | (2,965)
Net income (loss) attributable to Acacia Research Corporation | $ 59,453 | $ 21,106 | $ 34,051
Net income per common share attributable to Acacia Research Corporation: |  |  |
Basic income per share | $ 1.26 | $ 0.53 | $ 1.05
Diluted income per share | $ 1.24 | $ 0.51 | $ 0.97
Weighted-average shares: |  |  |
Weighted average number of shares outstanding, basic | 47,251,061 | 39,743,433 | 32,306,322
Weighted-average number of shares outstanding, diluted | 48,060,647 | 41,258,297 | 35,081,611

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