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Business Segments (Reconciliation of Segment Results to Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Income from construction operations | $ 40,122 | $ 20,084
Other income (expense), net | 682 | (754)
Interest expense | (14,080) | (11,125)
INCOME BEFORE INCOME TAXES | 26,724 | 8,205
Tutor Perini Corporation [Member] |  |
Income from construction operations | 778 | 1,424
Other income (expense), net | (621) | (2,068)
Interest expense | (13,484) | (10,264)
INCOME BEFORE INCOME TAXES | $ 9,752 | $ 1,032

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