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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract] |  |  |  |
NET INCOME | $ 25,436 | $ 25,300 | $ 42,390 | $ 71,697
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX: |  |  |  |
Defined benefit pension plan adjustments | 365 | 269 | 1,100 | 806
Foreign currency translation adjustments | 376 | 726 | (1,432) | 1,321
Unrealized gain (loss) in fair value of investments | (129) | 12 | (1,143) | (12)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | 612 | 1,007 | (1,475) | 2,115
COMPREHENSIVE INCOME | 26,048 | 26,307 | 40,915 | 73,812
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 4,164 | 1,716 | 8,359 | 4,253
COMPREHENSIVE INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION | $ 21,884 | $ 24,591 | $ 32,556 | $ 69,559

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