Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Net income	$ 15,400	$ 5,126
Weighted-average common shares outstanding - basic	49,079	48,747
Effect of diluted stock options and unvested restricted stock	206	796
Weighted-average common shares outstanding - diluted	49,285	49,543
Net income per share: Basic	$ 0.31	$ 0.11
Net income per share: Diluted	$ 0.31	$ 0.10
Anti-dilutive securities not included above	1,704	529
Tutor Perini Corporation [Member]
Net income	$ 15,400	$ 5,126

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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