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Consolidated Statements of Comprehensive Income/Loss - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Net income | $ 76,333 | $ 15,655 | $ 188,878
Other comprehensive income (loss) |  |  |
Unrealized gain (loss) on interest rate derivatives | 684 | (2,915) | (4,739)
Loss on interest rate derivatives recognized in interest expense (effective portion) | 3,216 | 4,230 | 3,599
Loss on interest rate derivatives recognized in interest expense (ineffective portion) | 88 | 0 | 0
Equity in other comprehensive income (loss) of equity method investee | 39 | (184) | (264)
Other comprehensive income (loss) | 4,027 | 1,131 | (1,404)
Comprehensive income | 80,360 | 16,786 | 187,474
Comprehensive income attributable to noncontrolling interests | (6,371) | (4,240) | (10,715)
Comprehensive income attributable to COPT | 73,989 | 12,546 | 176,759
Corporate Office Properties, L.P. [Member] |  |  |
Net income | 76,333 | 15,655 | 188,878
Other comprehensive income (loss) |  |  |
Unrealized gain (loss) on interest rate derivatives | 684 | (2,915) | (4,739)
Loss on interest rate derivatives recognized in interest expense (effective portion) | 3,216 | 4,230 | 3,599
Loss on interest rate derivatives recognized in interest expense (ineffective portion) | 88 | 0 | 0
Equity in other comprehensive income (loss) of equity method investee | 39 | (184) | (264)
Other comprehensive income (loss) | 4,027 | 1,131 | (1,404)
Comprehensive income | 80,360 | 16,786 | 187,474
Comprehensive income attributable to noncontrolling interests | (3,646) | (3,715) | (3,720)
Comprehensive income attributable to COPT | $ 76,714 | $ 13,071 | $ 183,754

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