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Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Statement of Comprehensive Income [Abstract] |  |
Net loss including noncontrolling interests | $ (17,129) | $ (104,848)
Other comprehensive income (loss): |  |
Unrealized loss on foreign currency translation, net of tax of $0 | 0 | 88
Total other comprehensive loss | (17,129) | (104,760)
Comprehensive (income) loss attributable to noncontrolling interests | 14 | (181)
Comprehensive loss attributable to Acacia Research Corporation | $ (17,115) | $ (104,941)

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