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Other Comprehensive Income (Loss) (Schedule Of Tax Effects Of The Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Defined benefit pension plan adjustments, Before-Tax Amount | $ 464 | $ 494 | $ 926 | $ 1,026
Defined benefit pension plan adjustments, Tax (Expense) Benefit | (133) | (140) | (265) | (291)
Defined benefit pension plan adjustments, Net-of-Tax Amount | 331 | 354 | 661 | 735
Foreign currency translation adjustments, Before-Tax Amount | 1,072 | (914) | 1,551 | (2,553)
Foreign currency translation adjustments, Tax (Expense) Benefit | (262) | 280 | (393) | 745
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total | 810 | (634) | 1,158 | (1,808)
Unrealized gain (loss) in fair value of investments, Before-Tax Amount | 867 | (1,176) | 1,725 | (1,295)
Unrealized gain (loss) in fair value of investments, Tax (Expense) Benefit | (181) | 247 | (366) | 281
Unrealized gain (loss) in fair value of investments, Net-of-Tax Amount | 686 | (929) | 1,359 | (1,014)
Total other comprehensive income (loss), Before-Tax Amount | 2,403 | (1,596) | 4,202 | (2,822)
Total other comprehensive income (loss), Tax (Expense) Benefit | (576) | 387 | (1,024) | 735
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | 1,827 | (1,209) | 3,178 | (2,087)
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Before-of-Tax Amount | 157 | 0 | 259 | 0
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Tax (Expense) Benefit | 0 | 0 | 0 | 0
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Net-of-Tax Amount | 157 | 0 | 259 | 0
Total other comprehensive income (loss) attributable to Tutor Perini Corporation, Before-Tax Amount | 2,246 | (1,596) | 3,943 | (2,822)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation, Tax (Expense) Benefit | (576) | 387 | (1,024) | 735
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | $ 1,670 | $ (1,209) | $ 2,919 | $ (2,087)

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