Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2016	Dec. 31, 2015
Reclassified amortization of deferred debt issuance costs	$ 300	$ 800
Current deferred tax assets			$ 26,029	$ 26,306
Current deferred tax liabilities			24,900
Long-Term Debt, Less Current Maturities [Member] | Reclassification [Member]
Unamortized debt issuance costs				5,800
Tutor Perini Corporation [Member]
Current deferred tax assets			$ 16,323	$ 2,255