CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 25,105	$ 26,138
OTHER COMPREHENSIVE LOSS, NET OF TAX:
Defined benefit pension plan adjustments	492	423
Foreign currency translation adjustments	372	(4,013)
Unrealized (loss) gain in fair value of investments	(1,183)	542
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX	(319)	(3,048)
COMPREHENSIVE INCOME	24,786	23,090
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	9,367	6,747
COMPREHENSIVE INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ 15,419	$ 16,343

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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