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Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Statement of Comprehensive Income [Abstract] |  |  |
Net income (loss) attributable to Acacia Research Corporation | $ (56,434) | $ 59,453 | $ 21,106
Other comprehensive income (loss): |  |  |
Unrealized loss on short-term investments | 26 | 657 | (1,830)
Unrealized gain on foreign currency translation | 0 | 7 | 0
Add: reclassification adjustment for losses included in net income | 193 | 277 | 0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | (56,215) | 60,394 | 19,276
Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest | 0 | 0 | 0
Comprehensive income | $ (56,215) | $ 60,394 | $ 19,276

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