Tutor Perini (TPC) 10-Q 3 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 27, 2017
Document and Entity Information
Entity Registrant Name	TUTOR PERINI Corp
Entity Central Index Key	77,543
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		49,695,374
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
REVENUE	$ 1,117,361	$ 1,085,369
COST OF OPERATIONS	(1,014,641)	(980,277)
GROSS PROFIT	102,720	105,092
General and administrative expenses	(65,703)	(64,970)
INCOME FROM CONSTRUCTION OPERATIONS	37,017	40,122
Other income, net	417	682
Interest expense	(15,564)	(14,080)
INCOME BEFORE INCOME TAXES	21,870	26,724
Provision for income taxes	(8,106)	(11,324)
NET INCOME	$ 13,764	$ 15,400
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.28	$ 0.31
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.27	$ 0.31
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	49,282	49,079
DILUTED (in shares)	50,948	49,285

CONDENSED CONSOLIDATED STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
NET INCOME	$ 13,764	$ 15,400
OTHER COMPREHENSIVE INCOME, NET OF TAX:
Defined benefit pension plan adjustments	268	247
Foreign currency translation adjustments	(54)	930
Unrealized (loss) gain in fair value of investments	(21)	8
Unrealized loss in fair value of interest rate swap		(35)
Total other comprehensive income, net of tax	193	1,150
TOTAL COMPREHENSIVE INCOME	$ 13,957	$ 16,550

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 104,817	$ 146,103
Restricted cash	60,158	50,504
Accounts receivable, including retainage of $594,926 and $569,391	1,749,602	1,743,300
Costs and estimated earnings in excess of billings	840,760	831,826
Other current assets	58,482	66,023
Total current assets	2,813,819	2,837,756
PROPERTY AND EQUIPMENT, net of accumulated depreciation of $333,531 and $313,783	462,695	477,626
GOODWILL	585,006	585,006
INTANGIBLE ASSETS, NET	92,111	92,997
OTHER ASSETS	44,852	45,235
TOTAL ASSETS	3,998,483	4,038,620
CURRENT LIABILITIES:
Current maturities of long-term debt	27,598	85,890
Accounts payable, including retainage of $264,336 and $258,294	965,931	994,016
Billings in excess of costs and estimated earnings	288,795	331,112
Accrued expenses and other current liabilities	112,448	107,925
Total current liabilities	1,394,772	1,518,943
LONG-TERM DEBT, less current maturities, net of unamortized discounts and debt issuance costs totaling $52,293 and $56,072	753,191	673,629
DEFERRED INCOME TAXES	130,616	131,007
OTHER LONG-TERM LIABILITIES	159,777	162,018
TOTAL LIABILITIES	2,438,356	2,485,597
CONTINGENCIES AND COMMITMENTS (NOTE 6)
STOCKHOLDERS' EQUITY:
Preferred stock-- authorized 1,000,000 shares ($1 par value), none issued
Common stock - authorized 75,000,000 shares ($1 par value), issued and outstanding 49,694,018 and 49,211,353 shares	49,694	49,211
Additional paid-in capital	1,068,264	1,075,600
Retained earnings	487,389	473,625
Accumulated other comprehensive loss	(45,220)	(45,413)
TOTAL STOCKHOLERS' EQUITY	1,560,127	1,553,023
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	$ 3,998,483	$ 4,038,620

CONDENSED CONSOLIDATED BALANCE5

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
CONDENSED CONSOLIDATED BALANCE SHEETS [Abstract]
Accounts receivable, retainage	$ 594,926	$ 569,391
Accumulated depreciation	333,531	313,783
Accounts payable, retainage	264,336	258,294
Unamortized discount and debt issuance cost	$ 52,293	$ 56,072
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares issued	0	0
Common stock, shares authorized	75,000,000	75,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares issued	49,694,018	49,211,353
Common stock, shares outstanding	49,694,018	49,211,353

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net income	$ 13,764	$ 15,400
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	20,110	11,923
Amortization of intangible assets	886	886
Share-based compensation expense	4,306	3,647
Change in debt discounts and deferred debt issuance costs	3,836	1,687
Deferred income taxes	(526)	(155)
(Gain) loss on sale of property and equipment	(131)	285
Other long-term liabilities	(1,824)	(4,061)
Other non-cash items	267	1,399
Changes in other components of working capital	(73,533)	(15,067)
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(32,845)	15,944
Cash Flows from Investing Activities:
Acquisition of property and equipment excluding financed purchases	(5,672)	(4,812)
Proceeds from sale of property and equipment	259	939
Change in restricted cash	(9,654)	(3,305)
NET CASH USED IN INVESTING ACTIVITIES	(15,067)	(7,178)
Cash Flows from Financing Activities:
Proceeds from debt	313,977	299,785
Repayment of debt	(296,485)	(287,484)
Issuance of common stock and effect of cashless exercise	(10,809)
Debt issuance costs	(57)	(5,937)
NET CASH PROVIDED BY FINANCING ACTIVITIES	6,626	6,364
Net (decrease) increase in cash and cash equivalents	(41,286)	15,130
Cash and cash equivalents at beginning of period	146,103	75,452
Cash and cash equivalents at end of period	$ 104,817	$ 90,582

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2017
Basis of Presentation [Abstract]
Basis of Presentation	(1) Basis of Presentation  The Condensed Consolidated Financial Statements do not include footnotes and certain financial information normally presented annually under accounting principles generally accepted in the United States (“GAAP”) . T herefore, they should be read in conjunction with the audited consolidated financial statements and the related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. The results of operations for the three months ended March 31, 2017 may not be indicative of the results that will be achieved for the full year ending December 31, 2017 .  In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements reflect all adjustments, including those of a normal recurring nature, necessary to present fairly the Company’s consolidated financial position as of March 31, 2017 and its consolidated results of operations and cash flows for the interim periods presented. All significant intercompany transactions of consolidated subsidiaries have been eliminated. Management has evaluated all material events occurring subsequent to the date of the financial statements up to the filing of this Form 10-Q.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2017
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	In May 2014, the Financial Accounting Standards Board (“ FASB ”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Custo mers (Topic 606) , as amended by subsequent ASUs (collectively, “ASU 2014-09”). ASU 2014-09 amend s the existing accounting standards for revenue recognition and establishes principles for recognizing revenue upon the transfer of promised goods or services to customers based on the expected consideration to be received in exchange for those goods or services. The guidance will be effective for the Company as of January 1, 2018. The amendments may be applied retrospectively to each prior period presented or with the cumulative effect recognized as of the date of initial application (modified retrospective method). The Company is currently reviewing contracts in order to determine the impact, if any, the adoption of ASU 2014-09 will have on its consolidated financial statements. A number of industry-specific implementation issues are still unresolved , and the final resolution of certain of these issues could impact the Company’s current accounting policies and/or revenue recognition patterns. The Company currently expects to adopt this new standard using the modified retrospective method.  In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350) , Simplifying the Test for Goodwill Impairment . This ASU simplifie s the calculation of goodwill impairment by eliminating Step 2 of the impairment test as required by the current guidance . Step 2 requires companies to calculate the implied fair value of their goodwill by estimating the fair value of their assets, other than goodwill, and liabilities, including unrecognized assets and liabilities, following the procedure s that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. The calculated net fair value of the assets would then be compared to the fair value of the reporting unit to determine the implied fair value of goodwill, and to the extent that the carrying value of goodwill was less than the implied fair value, a loss would be recognized. Under ASU 2017-04, however, goodwill is impaired when the calculated fair value of a reporting unit is less than its carrying value, and the impairment charge will equal that difference ( i.e., impairment will be calculated at the reporting unit level and there will be no need to estimate the fair value of individual assets and liabilities ) . This guidance will be effective for the Company for any goodwill impairment tests performed in years be ginning after December 15, 2019; however, early adoption is permitted for tests performed on testing dates after January 1, 2017. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.  In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230) - Restricted Cash . This ASU requires that restricted cash and restricted cash equivalents be aggregated with cash and cash equivalents in the statement of cash flows; thus the statement will reconcile the aggregate beginning-of-period and end-of-period balances. Consequently, changes in restricted cash and restricted cash equivalents will no longer be presented as a component of cash flows from investing activities in the statement of cash flows. The Company expects to retrospectively adopt this ASU effective January 1, 201 8.  In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which amends the existing lease guidance. This ASU requires the recognition of lease assets and lease liabilities by lessees for those leases currently classified as operating leases. Other significant provisions of the amendment include (i) defining the “lease term” to include the non-cancellable period together with periods for which there is a significant economic incentive for the lessee to extend or not terminate the lease; (ii) defining the initial lease liability to be recorded on the balance sheet to contemplate only those variable lease payments that depend on an index or that are in substance “fixed”; and (iii) a dual approach for determining whether lease expense is recognized on a straight-line or accelerated basis, depending on whether the lessee is expected to utilize more than an insignificant portion of the leased asset’s economic benefits. This will be effective for the Company as of January 1, 2019 and will be applied using the modified retrospective transition method for existing leases. The Company is currently evaluating the effect that the adoption of this ASU will have on its consolidated financial statements

Earnings Per Common Share (EPS)

Earnings Per Common Share (EPS)	3 Months Ended
	Mar. 31, 2017
Earnings Per Common Share (EPS) [Abstract]
Earnings Per Common Share (EPS)	( 3 ) Earnings P er Common Share (EPS)  Basic EPS and diluted EPS are calculated by dividing net income by the following: for basic EPS, the weighted-average number of common shares outstanding during the period; and for diluted EPS, the sum of the weighted-average number of both outstanding common shares and potentially dilutive securities. The Company calculates the number of potentially dilutive securities using the treasury stock method for its granted but unvested restricted stock units and stock options and vested but unexercised stock options. The calculations of basic and diluted EPS for the three months ended March 31, 2017 and 2016 are presented below:     Three Months Ended March 31,  (in thousands, except per share amounts) 2017 2016  Net income $ 13,764 $ 15,400   Weighted-average common shares outstanding, basic 49,282 49,079  Effect of dilutive restricted stock units and stock options 1,666 206  Weighted-average common shares outstanding, diluted 50,948 49,285   Earnings per common share:  Basic earnings per common share $ 0.28 $ 0.31  Diluted earnings per common share $ 0.27 $ 0.31   Anti-dilutive shares not included above 930 1,704  With regard to diluted EPS and the impact of the Convertible Notes on the diluted EPS calculation, because the Company has the intent and ability to settle the principal amount of the Convertible Notes in cash, per Accounting Standards Codification (“ASC”) 260 , Earnings Per Share , the settlement of the principal amount has no impact on diluted EPS. Additionally, ASC 260 requires any potential conversion premium associated with the Convertible Notes’ conversion option to be considered in the calculatio n of diluted EPS when the Company's average stock price , as defined in the indenture governing the Convertible Notes, is higher than 130% of the Convertible Notes’ conversion rate of 33.0579 (or $39.32 ). This was not the case during the three months ended March 31, 2017.

Costs And Estimated Earnings In

Costs And Estimated Earnings In Excess Of Billings	3 Months Ended
	Mar. 31, 2017
Costs and estimated earnings in excess of billings [Abstract]
Costs and Estimated Earnings in Excess of Billings	( 4 ) Costs and Estimated Earnings in Excess of B illings  C osts and estimated earnings in excess of billings , as reported on the Balance Sheet, consist of the following:      As of March 31, As of December 31,  (in thousands) 2017 2016  Claims $ 464,220 $ 477,425  Unapproved change orders 250,114 207,475  Other unbilled costs and profits 126,426 146,926  Total costs and estimated earnings in excess of billings $ 840,760 $ 831,826  Claims and unapproved change orders are billable upon the agreement and resolution between the contractual parties and after the execution of contractual amendments . Increases in claims and unapproved change orders typically result from costs being incurred against existing or new positions where recovery is concluded to be both probable and reliably estimable; decreases normally result from resolutions and subsequent billings . Other unbilled costs and profits are billable in accordance with the billing terms of each of the existing contractual arrangements and, as such, the timing of contract billing cycles can cause fluctuations in the balance of unbilled costs and profits. Ultimate resolution of other unbilled costs and profits typically involves the passage of time and, often, incremental progress toward contractual requirements or milestones .

Financial Commitments

Financial Commitments	3 Months Ended
	Mar. 31, 2017
Financial Commitments [Abstract]
Financial Commitments	( 5 ) Financial Commitments  Subsequent Events - Debt Transactions  2017 Senior Notes  On Ap ril 20 , 2017, the Company issued $500 million in aggregate principal amount of 6.875% Senior Notes due 2025 (the “2017 Senior Notes”) in a private placement offering. Interest on the 2017 Senior Notes is payable in arrears semi-annual ly on May 1 and November 1 of each year, beginning on November 1, 2017.  Prior to May 1, 2020, the Company may redeem the 2017 Senior Notes at a redemption price equal to 100% of their principal amount plus a “make whole” premium described in the indenture. In addition, prior to May 1, 2020, the Company may redeem up to 40% of the original aggregate principal amount of the notes at a redemption price of 106.875% of their principal amount with the proceeds received by the Company from any equity offering. After May 1, 2020, the Company may redeem the 2017 Senior Notes at specified redemption prices described in the indenture. Upon a change of control, holders of the 2017 Senior Notes may require the Company to repurchase all or part of the 2017 Senior Notes at 101% of the principal amount thereof, plus accrued and unpaid interest, if any, to, but excluding, the redemption date.  The 2017 Senior Notes are senior unsecured obligations of the Company and are guaranteed by substantially all of the Company’s existing and future subsidiaries that also guarantee obligations under the Company’s 2017 Credit Facility, as defined below. In addition, the indenture for the 2017 Senior Notes provides for customary covenants, including restrictions on the payment of dividends and share repurchases, and events of default.  2017 Credit Facility  On April 20, 2017 the Company entered into a credit agreement (the “2017 Credit Facility”) with SunTrust Bank as Administrative Agent, Swing Line Lender and L/C Issuer and a syndicate of other lenders. The 2017 Credit Facility provides for a $350 million revolving credit facility (the “2017 Revolver”) and a sublimit for the issuance of letters of credit and swingline loans up to the aggregate amount of $150 million and $10.0 million, respectively , both maturing on April 20, 2022 unless any of the Convertible Notes, as defined below, are outstanding on December 17, 2020, in which case all such borrowings will mature on December 17, 2020 (subject to certain further exceptions) . In addition, the 2017 Credit Facility permits additional borrowing s in an aggregate amount of $150 million, which can be in the form of increased capacity on the 2017 Revolver or the establishment of one or more term loans.  Borrowings under the 2017 Revolver bear interest , at the Company’s option, at a rate equal to a margin over (a) the London Interbank Offered Rate (“LIBOR”) plus a margin of between 1.50% and 3.00% (which is initially 2.50% ) or (b) a base rate (determined by reference to the highest of (i) the administrative agent’s prime lending rate, (ii) the federal funds effective rate plus 50 basis points, (iii) the LIBOR rate for a one-month interest period plus 100 basis points and (iv) 0% ) plu s a margin of between 0.50% and 2.00% (which is initially 1.50% ), in each case based on the Consolidated Leverage Ratio (as defined in the 2017 Credit Agreement). In addition to paying interest on outstanding principal under the 2017 Credit Agreement, the Company will pay a commitment fee to the lenders under the 2017 Revolver in respect of the unutilized commitments thereunder. The Company will pay customary letter of credit fees. If an event of default occurs and is continuing, the otherwise applicable margin and letter of credit fees will be increased by 2% per annum.  The 2017 Credit Facility contains customary covenants for credit facilities of this type, including maximum consolidated leverage ratios ranging from 4.00 :1.00 to 3.25 :1.00 over the life of the facility and a minimum consolidated fixed charge coverage ratio of 1.25 :1.00. Substantially all of the Company’s subsidiaries unconditionally guarantee the obligations of the Company under the 2017 Credit Facility; additionally, the obligations are secured by a lien on all personal property of the Company and its subsidiaries guaranteeing these obligations.  Repurchase and Redemption of 2010 Senior Notes and Termination of 2014 Credit Facility  On April 20, 2017, t he Company used proceeds from the 2017 Senior Notes and 2017 Revolver to repurchase or redeem its 2010 Senior Notes, to pay off its Term Loan a nd 2014 Revol ver, and to pay accrued but unpaid interest and fees . In addition, the indenture governing the 2010 Senior Notes was satisfied and discharged, and the Company terminated the 2014 Credit Facility .  Long-Term Debt  Long-term debt consisted of the following as of the dates of the Balance Sheets presented:     As of March 31, As of December 31,  (in thousands) 2017 2016  Term Loan $ 47,699 $ 54,650  2014 Revolver 181,302 147,990  2010 Senior Notes 298,374 298,120  Convertible Notes 154,832 152,668  Equipment financing, mortgages and acquisition-related notes 95,453 101,558  Other indebtedness 3,129 4,533  Total debt 780,789 759,519  Less – current maturities (27,598) (85,890)  Long-term debt, net $ 753,191 $ 673,629  The following table reconciles the outstanding debt balance to the reported debt balances as of March 31, 2017 and December 31, 2016:      As of March 31, 2017 As of December 31, 2016  (in thousands) Outstanding Long-Term Debt Unamortized Discounts and Issuance Costs Long-Term Debt, as reported Outstanding Long-Term Debt Unamortized Discounts and Issuance Costs Long-Term Debt, as reported  Term Loan $ 49,500 $ (1,801) $ 47,699 $ 57,000 $ (2,350) $ 54,650  2014 Revolver 185,000 (3,698) 181,302 152,500 (4,510) 147,990  2010 Senior Notes 300,000 (1,626) 298,374 300,000 (1,880) 298,120  Convertible Notes 200,000 (45,168) 154,832 200,000 (47,332) 152,668  2010 Senior Notes  In October 2010, the Company issued $300 million of 7.625% Senior Notes due November 1, 2018 (the “2010 Senior Notes”) in a private placement offering. As discussed above, on April 20, 2017, the Company repurchased or redeemed the 2010 Senior Notes in full and the related indenture was satisfied and discharged.  2014 Credit Facility  On June 5, 2014, the Company entered into a Sixth Amended and Restated Credit Agreement, as amended (the “2014 Credit Facility”), with Bank of America, N.A. as Administrative Agent, Swing Line Lender and L/C Issuer and a syndicate of other lenders. The 2014 Credit Facility provides for a $300 million revolving credit facility (the “2014 Revolver”), a $250 million term loan (the “Term Loan”) and a sublimit for the issuance of letters of credit up to the aggregate amount of $150 million, all maturing on May 1, 2018 . Borrowings under both the 2014 Revolver and the Term Loan bear interest based either on Bank of America’s prime lending rate or the London Interbank Offered Rate (“LIBOR”), each plus an applicable margin ranging from 1.25% to 3.00%, contingent upon the latest Consolidated Leverage Ratio.  As of March 31, 2017, there was $114.8 million available under the 2014 Revolver and the Company had utilized the 2014 Credit Facility for letters of credit in the amount of $0.2 million. The Company was in compliance with the financial covenants under the 2014 Credit Facility for the period ended March 31, 2017. As discussed above, on April 20, 2017, the Company repaid all borrowings under the 2014 Credit Facility and concurrently terminated the facility; consequently, the Company presented the full amount due under the Term Loan as long-term debt in its Condensed Consolidated Balance Sheet at March 31, 2017, as required by ASC 470, Debt .  Convertible Notes  On June 15, 2016, the Company issued $200 million of 2.875% Convertible Senior Notes due June 15, 2021 (the “Convertible Notes”) in a private placement offering. The Convertible Notes are unsecured obligations and do not contain any financial covenants or restrictions on the payments of dividends, the incurrence of indebtedness or the issuance or repurchase of securities by the Company. The Convertible Notes bear interest at a rate of 2.875% per year, payable in cash semi-annually in June and December.  Prior to January 15, 2021, the Convertible Notes will be convertible only under the following circumstances: (1) during the five business day period after any ten consecutive trading day period in which the trading price per $1,000 principal amount of Convertible Notes for such trading day was less than 98% of the product of the last reported sale price of our common stock and the conversion rate on each such trading day; (2) if the last reported sale price of the common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion rate of 33.0579 (or $39.32 ), on each applicable trading day; or (3) upon the occurrence of specified corporate events. On or after January 15, 2021 until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their notes, in multiples of $1,000 principal amount, at the option of the holder regardless of the foregoing circumstances.  The Convertible Notes will be convertible at an initial conversion rate of 33.0579 shares of the Company’s common stock per $1,000 principal amount of the Convertible Notes, which is equivalent to an initial conversion price of approximately $30.25 . The conversion rate will be subject to adjustment for some events but will not be adjusted for any accrued and unpaid interest. In addition, following certain corporate events that occur prior to the maturity date, the Company is required to increase, in certain circumstances, the conversion rate for a holder who elects to convert their Convertible Notes in connection with such a corporate event including customary conversion rate adjustments in connection with a “make-whole fundamental change” described in the indenture. Upon conversion, and at the Company’s election, the Company may satisfy its conversion obligation by paying or delivering, as applicable, cash, shares of its common stock or a combination of cash and shares of its common stock. As of March 31, 2017, none of the conversion provisions of the Convertible Notes have been triggered.  Interest Expense  Interest expense as reported in the Condensed Consolidated Statements of Operations consists of the following:      Three Months Ended  March 31,  (in thousands) 2017 2016  Cash interest expense:  Interest on 2014 Credit Facility $ 3,709 $ 5,338  Interest on 2010 Senior Notes 5,719 5,719  Interest on Convertible Notes 1,438 —  Other interest 862 1,336  Total cash interest expense 11,728 12,393   Non-cash interest expense: (a)  Amortization of debt issuance costs on 2014 Credit Facility 1,418 1,439  Amortization of discount and debt issuance costs on 2010 Senior Notes 254 248  Amortization of discount and debt issuance costs on Convertible Notes 2,164 —  Total non-cash interest expense 3,836 1,687   Total cash and non-cash interest expense $ 15,564 $ 14,080 ____________________________________________________________________________________________________ (a) Non-cash interest expense, when combined with cash interest expense, produces effective interest rates that are higher than contractual rates. Accordingly, the effective interest rates for the quarter ended March 31, 2017 are as follows: for the 2014 Credit Facility, 9.86% ; for the 2010 Senior Notes, 7.99% ; and for the Convertible Notes, 9.39% .

Contingencies and Commitments

Contingencies and Commitments	3 Months Ended
	Mar. 31, 2017
Contingencies and Commitments [Abstract]
Contingencies and Commitments	(6) Contingencies and Commitments  The Company and certain of its subsidiaries are involved in litigation and are contingently liable for commitments and performance guarantees arising in the ordinary course of business. The Company and certain of its customers have made claims arising from the performance under their contracts. The Company recognizes certain significant claims for recovery of incurred cost when it is probable that the claim will result in additional contract revenue and when the amount of the claim can be reliably estimated. These assessments require judgments concerning matters such as litigation developments and outcomes, the anticipated outcome of negotiations, the number of future claims and the cost of both pending and future claims. In addition, because most contingencies are resolved over long periods of time, assets and liabilities may change in the future due to various factors. Management believes that, based on current information and discussions with the Company’s legal counsel, the ultimate resolution of these matters is not expected to have a material adverse effect on the Company’s financial position, results of operations, or cash flows.  Several matters are in the litigation and dispute resolution process. The following discussion provides a background and current status of the more significant matters.  Long Island Expressway/Cross Island Parkway Matter  The Company reconstructed the Long Island Expressway/Cross Island Parkway Interchange project for the New York State Department of Transportation (the “NYSDOT”). The $130 million project was substantially completed in January 2004 and was accepted by the NYSDOT as complete in February 2006. The Company incurred significant added costs in completing its work and suffered extended schedule costs due to numerous design errors, undisclosed utility conflicts, lack of coordination with local agencies and other interferences for which the Company believes the NYSDOT is responsible.  In March 2011, the Company filed its claim and complaint with the New York State Court of Claims and served to the New York State Attorney General’s Office, seeking damages in the amount of $53.8 million. In May 2011, the NYSDOT filed a motion to dismiss the Company’s claim on the grounds that the Company had not provided required documentation for project closeout and filing of a claim. In September 2011, the Company reached agreement on final payment with the Comptroller’s Office on behalf of the NYSDOT which resulted in an amount of $0.5 million payable to the Company and formally closed out the project allowing the Company to re-file its claim. The Company re-filed its claim in the amount of $53.8 million with the NYSDOT in February 2012 and with the Court of Claims in March 2012. In May 2012, the NYSDOT served its answer and counterclaims in the amount of $151 million alleging fraud in the inducement and punitive damages related to disadvantaged business enterprise (“DBE”) requirements for the project. The Court subsequently ruled that NYSDOT’s counterclaims may only be asserted as a defense and offset to the Company’s claims and not as affirmative claims. In November 2014, the Appellate Division First Department affirmed the dismissal of the City’s affirmative defenses and affirmative counterclaims based on DBE fraud. The Company does not expect the counterclaims to have any material effect on its consolidated financial statements.  Management has made an estimate of the total anticipated recovery on this project, and such estimate is included in revenue recorded to date. To the extent new facts become known or the final recovery included in the claim settlement varies from the estimate, the impact of the change will be reflected in the consolidated financial statements at that time.  Fontainebleau Matter  Desert Mechanical Inc. (“DMI”) and Fisk Electric Company (“Fisk”), wholly owned subsidiaries of the Company, were subcontractors on the Fontainebleau Project in Las Vegas (“Fontainebleau”), a hotel/casino complex with approximately 3,800 rooms. In June 2009, Fontainebleau filed for bankruptcy protection, under Chapter 11 of the U.S. Bankruptcy Code, in the Southern District of Florida. Fontainebleau is headquartered in Miami, Florida.  DMI and Fisk filed liens in Nevada for approximately $44 million, representing unreimbursed costs to date and lost profits, including anticipated profits. Other unaffiliated subcontractors have also filed liens. In June 2009, DMI filed suit against Turnberry West Construction, Inc., the general contractor, in the 8th Judicial District Court, Clark County, Nevada (the “District Court”), and in May 2010, the court entered an order in favor of DMI for approximately $45 million.  In January 2010, the Bankruptcy Court approved the sale of the property to Icahn Nevada Gaming Acquisition, LLC, and this transaction closed in February 2010. As a result of a July 2010 ruling relating to certain priming liens, there was approximately $125 million set aside from this sale, which is available for distribution to satisfy the creditor claims based on seniority. At that time, the total estimated sustainable lien amount was approximately $350 million. The project lender filed suit against the mechanic’s lien claimants, including DMI and Fisk, alleging that certain mechanic’s liens are invalid and that all mechanic’s liens are subordinate to the lender’s claims against the property. The Nevada Supreme Court ruled in October 2012 in an advisory opinion at the request of the Bankruptcy Court that lien priorities would be determined in favor of the mechanic lien holders under Nevada law.  In October 2013, a settlement was reached by and among the Statutory Lienholders and the other interested parties. The Bankruptcy Court appointed a mediator to facilitate the execution of that settlement agreement. Settlement discussions are ongoing.  Management has made an estimate of the total anticipated recovery on this project, and such estimate is included in revenue recorded to date. To the extent new facts become known or the final recovery included in the claim settlement varies from the estimate, the impact of the change will be reflected in the consolidated financial statements at that time.  Honeywell Street/Queens Boulevard Bridges Matter  In 1999, the Company was awarded a contract for reconstruction of the Honeywell Street/Queens Boulevard Bridges project for the City of New York (the “City”). In June 2003, after substantial completion of the project, the Company initiated an action to recover $8.8 million in claims against the City on behalf of itself and its subcontractors. In March 2010, the City filed counterclaims for $74.6 million and other relief, alleging fraud in connection with the DBE requirements for the project. In May 2010, the Company served the City with its response to the City’s counterclaims and affirmative defenses. In August 2013, the Court granted the Company’s motion to dismiss the City’s affirmative defenses and counterclaims relating to fraud.  In January 2017, the Court granted the City’s motion for summary judgment and dismissed the Company’s claim against the City of New York. The Company has filed a notice of appeal. The Court also granted the Company’s motion for summary judgment for release of retention plus interest from 2010 for an aggregate amount of approximately $1.1 million.  The Company does not expect ultimate resolution of this matter to have any material effect on its consolidated financial statements.  Westgate Planet Hollywood Matter  Tutor-Saliba Corporation (“TSC”), a wholly owned subsidiary of the Company, contracted to construct a timeshare development project in Las Vegas which was substantially completed in December 2009. The Company’s claims against the owner, Westgate Planet Hollywood Las Vegas, LLC (“WPH”), relate to unresolved owner change orders and other claims. The Company filed a lien on the project in the amount of $23.2 million, and filed its complaint with the District Court, Clark County, Nevada. Several subcontractors have also recorded liens, some of which have been released by bonds and some of which have been released as a result of subsequent payment. WPH has posted a mechanic’s lien release bond for $22.3 million.  WPH filed a cross-complaint alleging non-conforming and defective work for approximately $51 million, primarily related to alleged defects, misallocated costs, and liquidated damages. WPH revised the amount of their counterclaims to approximately $45 million.  Following multiple post-trial motions, final judgment was entered in this matter on March 20, 2014. TSC was awarded total judgment in the amount of $19.7 million on its breach of contract claim, which includes an award of interest up through the date of judgment, plus attorney’s fees and costs. WPH has paid $0.6 million of that judgment. WPH was awarded total judgment in the amount of $3.1 million on its construction defect claims, which includes interest up through the date of judgment. The awards are not offsetting. WPH and its Sureties have filed a notice of appeal. TSC has filed a notice of appeal on the defect award. In July 2014, the Court ordered WPH to post an additional supersedeas bond on appeal, in the amount of $1.7 million, in addition to the lien release bond of $22.3 million, which increases the security up to $24.0 million. The Nevada Supreme Court has not yet ruled on this matter.  The Company does not expect ultimate resolution of this matter to have any material effect on its consolidated financial statements. Management has made an estimate of the total anticipated recovery on this project and such estimate is included in revenue recorded to date. To the extent new facts become known or the final recovery included in the claim settlement varies from the estimate, the impact of the change will be reflected in the consolidated financial statements at that time.  U.S. Department of Commerce, National Oceanic and Atmospheric Administration Matter  Rudolph and Sletten, Inc. (“R&S”), a wholly owned subsidiary of the Company, entered into a contract with the United States Department of Commerce, National Oceanic and Atmospheric Administration (“NOAA”) for the construction of a 287,000 square-foot facility for NOAA’s Southwest Fisheries Science Center Replacement Headquarters and Laboratory in La Jolla, California. The contract work began on May 24, 2010, and was substantially completed in September 2012. R&S incurred significant additional costs as a result of a design that contained errors and omissions, NOAA’s unwillingness to correct design flaws in a timely fashion and a refusal to negotiate the time and pricing associated with change order work.  R&S has filed three certified claims against NOAA for contract adjustments related to the unresolved owner change orders, delays, design deficiencies and other claims. The First Certified Claim was submitted on August 20, 2013, in the amount of $26.8 million ("First Certified Claim") and the Second Certified Claim was submitted on October 30, 2013, in the amount of $2.6 million ("Second Certified Claim") and the Third Certified Claim was submitted on October 1, 2014 in the amount of $0.7 million (“Third Certified Claim”).  NOAA requested an extension to issue a decision on the First Certified Claim and on the Third Certified Claim, but did not request an extension of time to review the Second Certified Claim. On January 6, 2014, R&S filed suit in the United States Federal Court of Claims on the Second Certified Claim plus interest and attorney's fees and costs. This was followed by a submission of a lawsuit on the First Certified Claim on July 31, 2014. In February 2015, the court denied NOAA’s motion to dismiss the Second Certified Claim. In March 2015, the Contracting Officer issued decisions on all Claims accepting a total of approximately $1.0 million of claims and denying approximately $29.5 million of claims. On April 14, 2015, the c ourt consolidated the cases. In March 2017, the parties agreed to a proposed settlement subject to final government approval.  Management has made an estimate of the total anticipated recovery on this project, and such estimate is included in revenue recorded to date. To the extent new facts become known or the final recovery included in the claim settlement varies from the estimate, the impact of the change will be reflected in the consolidated financial statements at that time.  Five Star Electric Matter  In the third quarter of 2015, Five Star Electric Corp. ("Five Star"), a subsidiary of the Company that was acquired in 2011, entered into a tolling agreement related to an ongoing investigation being conducted by the United States Attorney for the Eastern District of New York (“USAO EDNY”). The tolling agreement extended the statute of limitations to avoid the expiration of any unexpired statute of limitations while the investigation is pending. Five Star has been cooperating with the USAO EDNY since late June 2014, when it was first made aware of the investigation, and has been providing information related to its use of certain minority-owned, women-owned, small and disadvantaged business enterprises and, in addition, most recently, information regarding certain of Five Star’s employee compensation, benefit and tax practices. The investigation covers the period of 2005-2014.  The Company cannot predict the ultimate outcome of the investigation and cannot accurately estimate any potential liability that Five Star or the Company may incur or the impact of the results of the investigation on Five Star or the Company.  Alaskan Way Viaduct Matter  In January 2011, Seattle Tunnel Partners (“STP”), a joint venture between Dragados USA, Inc. and the Company, entered into a design-build contract with the Washington State Department of Transportation (“WSDOT”) for the construction of a large diameter bored tunnel in downtown Seattle, King County, Washington to replace the Alaskan Way Viaduct, also known as State Route 99.  The construction of the large diameter bored tunnel requires the use of a tunnel boring machine (“TBM”). In December 2013, the TBM struck a steel pipe, installed by WSDOT as a well casing for an exploratory well. The TBM was damaged and was required to be shut down for repair. STP has asserted that the steel pipe casing was a differing site condition that WSDOT failed to properly disclose. The Disputes Review Board mandated by the contract to hear disputes issued a decision finding the steel casing was a Type I differing site condition. WSDOT has not accepted that finding.  The TBM is insured under a Builder’s Risk Insurance Policy (“the Policy”) with Great Lakes Reinsurance (UK) PLC and a consortium of other insurers (the “Insurers”). STP submitted the claims to the Insurers and requested interim payments under the Policy. The Insurers refused to pay and denied coverage. In June 2015, STP filed a lawsuit in the King County Superior Court, State of Washington (“Washington Superior Court”) seeking declaratory relief concerning contract interpretation as well as damages as a result of the Insurers’ breach of their obligations under the terms of the Policy. WSDOT is deemed a plaintiff since WSDOT is an insured under the Policy and had filed its own claim for damages. Hitachi, the manufacturer of the TBM, has also joined the case as a plaintiff for costs incurred to repair the damages to the TBM. Trial is scheduled for May 2018. Discovery is ongoing.  In March 2016, WSDOT filed a complaint against STP in Thurston County Superior Court for breach of contract alleging STP’s delays and failure to perform and declaratory relief concerning contract interpretation. STP filed its answer to WSDOT’s complaint and filed a counterclaim against WSDOT and against the manufacturer of the TBM. Trial is set for June 2018. Discovery is ongoing.  As of March 31, 2017, the Company has concluded that the potential for a material adverse financial impact due to the Insurers’ denial of coverage and WSDOT’s legal actions is neither probable nor remote. With respect to STP’s claims against WSDOT and Hitachi, manag ement has included an estimate of the total anticipated recovery, concluded to be both probable and reliably estimable, in receivables or costs and estimated earnings in excess of billings recorded to date. To the extent new facts become known or the final recovery included in the claim settlement varies from the estimate, the impact of the change will be reflected in the financial statements at that time.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2017
Share-Based Compensation [Abstract]
Share-Based Compensation	( 7 ) Share-Based Compensation  The Company’s share-based compensation plan is described, and informational disclosures are provided, in the Notes to Consolidated Financial Statements included in the Form 10-K for the year ended December 31, 2016 . During the first three months of 2017 and 2016, the Company issued the following share- based instruments: (1) restricted stock units of 665,000 and 483,387 at weighted-average per share prices of $30.48 and $ 19.14 , respectively; and (2) stock options of 265,000 and 274,000 at weighted-average per share exercise prices of $23.47 and $16. 20 , respectively.  Effective January 1, 2017, the Company prospectively adopted ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718) , which simplifies several aspects of the accounting for share-based payment transactions, including the accounting for the income tax effect of share-based tran sactions and the forfeiture of share-based instruments. Upon this adoption, the Company elected an accounting policy requiring forfeitures of share-based instruments to be accounted for upon occurrence. As a result, the Company will recognize the full grant-date fair value of share-based awards throughout the requisite service and/or performance period, with any adjustments for forfeitures recognized only if and when a forfeiture occurs. In the first quarter of 2017, 20,985 performance-based restricted stock units, with a weighted-average per share price of $23.91 , and 19,466 performance-based stock options, with a weighted-average per share exercise price of $2 6.56 , were forfeited ; however, t he impact of these forfeitures was not recognized in the first quarter of 2017 because it was previously recognized in the fourth quarter of 2016 in accordance with the provisions of ASC 718 before the adoption of ASU 2016-09.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2017
Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income (Loss)	( 8 ) Other Comprehensive Income (Loss)  ASC 220, Comprehensive Income , establishes standards for reporting and displaying comprehensive income and its components in the consolidated financial statements. The Company reports the change in pension benefit plans assets/liabilities, cumulative foreign currency translation, change in fair value of investments and change in fair value of an interest rate swap as components of accumulated other comprehensive loss (“AOCI”).  The tax effects of the components of other comprehensive income (loss) for the three months ended March 31, 2017 and 2016 are as follows:      Three Months Ended Three Months Ended  March 31, 2017 March 31, 2016  (in thousands) Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount  Other comprehensive income:  Defined benefit pension plan adjustments $ 455 $ (187) $ 268 $ 427 $ (180) $ 247  Foreign currency translation adjustments (92) 38 (54) 1,604 (674) 930  Unrealized (loss) gain in fair value of investments (36) 15 (21) 13 (5) 8  Unrealized loss in fair value of interest rate swap — — — (62) 27 (35)  Total other comprehensive income $ 327 $ (134) $ 193 $ 1,982 $ (832) $ 1,150  The changes in AOCI balances by component (after tax) for the three months ended March 31, 2017 and 2016 are as follows:      Three Months Ended March 31, 2017  Unrealized  Defined Gain (Loss) in Accumulated  Benefit Foreign Fair Value of Other  Pension Currency Investments, Comprehensive  (in thousands) Plan Translation Net Loss  Balance as of December 31, 2016 $ (40,865) $ (4,864) $ 316 $ (45,413)  Other comprehensive loss before reclassifications — (54) (21) (75)  Amounts reclassified from AOCI 268 — — 268  Total other comprehensive income (loss) 268 (54) (21) 193  Balance as of March 31, 2017 $ (40,597) $ (4,918) $ 295 $ (45,220)      Three Months Ended March 31, 2016  Unrealized Unrealized  Defined Gain in Fair Gain (Loss) in Accumulated  Benefit Foreign Value of Fair Value of Other  Pension Currency Investments, Interest Rate Comprehensive  (in thousands) Plan Translation Net Swap, Net Loss  Balance as of December 31, 2015 $ (38,242) $ (4,603) $ 656 $ 24 $ (42,165)  Other comprehensive gain (loss) before reclassifications — 930 8 (35) 903  Amounts reclassified from AOCI 247 — — — 247  Total other comprehensive income (loss) 247 930 8 (35) 1,150  Balance as of March 31, 2016 $ (37,995) $ (3,673) $ 664 $ (11) $ (41,015)  The significant items reclassified out of AOCI and the corresponding location and impact on the Condensed Consolidated Statement of Operations are as follows:      Location in Three Months Ended  Condensed Consolidated March 31,  (in thousands) Statements of Operations 2017 2016  Defined benefit pension plan adjustments Various accounts (a) $ 455 $ 427  Income tax benefit Provision for income taxes (187) (180)  Net of tax $ 268 $ 247 ____________________________________________________________________________________________________ (a) Defined benefit pension plan adjustments were reclassified primarily to cost of operations and general and administrative expenses.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
Income Taxes [Abstract]
Income Taxes	( 9 ) Income Taxes  The Company’s effective income tax rate for the three months ended March 31, 201 7 was 37.1% compared to 42.4% for the same period in 2016. The effective tax rate for the first quarter of 2017 was favorably impacted by tax benefits associated with share-based compensation recognized under the provision of ASU 2016-09, as discussed in Note 7. This tax benefit is the result of a greater tax deduction for share-based compensation expense for awards vesting in the first quarter of 2017 relative to the share-based compensation expense recognized und er GAAP for these same awards. For tax purposes, the value of deductible share-based compensation is based on the closing price of the Company’s common stock on the date of vesting; whereas for GAAP purposes, the value of shared-based compensation expense is determined using the closing price of the Company’s common stock on the date of grant. To the extent these values are different, the Company will recognize an additional tax benefit or expense , either of which would have an impact on the Compan y’s effective income tax rate. Accordingly, the tax benefit recognized in the first quarter of 2017 resulted from the appreciation in the value of the Company’s common stock from the date of grant to the date of vest ing . The effective tax rate for the first quarter of 2016 was unfavorably impacted by various discrete items, including certain state tax rate changes on deferred taxes.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Fair Value Measurements [Abstract]
Fair Value Measurements	( 10 ) Fair Value Measurements  The fair value hierarchy established by ASC 820, Fair Value Measurements , prioritizes the use of inputs used in valuation techniques into the following three levels:  · Level 1 inputs are observable quoted prices in active markets for identical assets or liabilities · Level 2 inputs are observable, either directly or indirectly, but are not Level 1 inputs · Level 3 inputs are unobserv able  The following table presents, by fair value hierarchy level, the Company’s assets that are measured at fair value on a recurring basis, as of March 31, 2017 and December 31, 2016:      As of March 31, 2017 As of December 31, 2016  Fair Value Hierarchy Fair Value Hierarchy  (in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3  Cash and cash equivalents (a) $ 104,817 $ 104,817 $ — $ — $ 146,103 $ 146,103 $ — $ —  Restricted cash (a) 60,158 60,158 — — 50,504 50,504 — —  Investments in lieu of retainage (b) 53,852 50,317 3,535 — 51,266 46,855 4,411 —  Total $ 218,827 $ 215,292 $ 3,535 $ — $ 247,873 $ 243,462 $ 4,411 $ — ____________________________________________________________________________________________________ (a) Includes money market funds with original maturity dates of three months or less. (b) Investments in lieu of customer retainage are classified as accounts receivable and are comprised of money market funds and municipal bonds, the majority of which are rated Aa3 or better. The fair values of the money market funds are measured using quoted market prices; therefore, they are classified as Level 1 assets. The fair values of municipal bonds are measured using readily available pricing sources for comparable instruments; therefore, they are classified as Level 2 assets.  The Company did not have material transfers between Levels 1 and 2 during the three months ended March 31, 2017 or 2016.  The carrying values of receivables, payables and other amounts arising out of normal contract activities, including retainage, which may be settled beyond one year, are estimated to approximate fair value. Of the Company’s long-term debt, the fair value of the 2010 Senior Notes as of March 31, 2017 and December 31, 2016 was $304.0 million and $302.6 million, respectively, and the fair value of the Convertible Notes was $ 249.2 million and $228.4 million as of March 31, 2017 and December 31, 2016, respectively. The fair values were determined using Level 1 inputs, specifically current observable market prices. The reported value of the Company’s remaining long-term debt at March 31, 2017 and December 31, 2016 approximates fair value.

Business Segments

Business Segments	3 Months Ended
	Mar. 31, 2017
Business Segments [Abstract]
Business Segments	(11) Business Segments  The Company offers general contracting, pre-construction planning and comprehensive project management services, including planning and scheduling of manpower, equipment, materials and subcontractors required for the timely completion of a project in accordance with the terms and specifications contained in a construction contract. The Company also offers self-performed construction services: site work; concrete forming and placement; steel erection; electrical; mechanical; plumbing; and heating, ventilation and air conditioning (HVAC). As described below, our business is conducted through three segments: Civil, Building and Specialty Contractors. These segments are determined based on how the Company’s Chairman and Chief Executive Officer (chief operating decision maker) aggregates business units when evaluating performance and allocating resources.  The Civil segment specializes in public works construction and the replacement and reconstruction of infrastructure. The civil contracting services include construction and rehabilitation of highways, bridges, tunnels, mass-transit systems, and water management and wastewater treatment facilities.  The Building segment has significant experience providing services for private and public works customers in a number of specialized building markets, including: high-rise residential, hospitality and gaming, transportation, health care, commercial and government offices, sports and entertainment, education, correctional facilities, biotech, pharmaceutical, industrial and high-tech.  The Specialty Contractors segment specializes in electrical, mechanical, plumbing, HVAC, fire protection systems and pneumatically placed concrete for a full range of civil and building construction projects in the industrial, commercial, hospitality and gaming, and mass-transit end markets. This segment provides the Company with unique strengths and capabilities that allow the Company to position itself as a full-service contractor with greater control over scheduled work, project delivery and risk management.  The following table sets forth certain reportable segment information relating to the Company’s operations for the three months ended March 31, 2017 and 2016:     Reportable Segments  Specialty Consolidated  (in thousands) Civil Building Contractors Total Corporate Total  Three Months Ended March 31, 2017  Total revenue $ 338,108 $ 515,251 $ 315,696 $ 1,169,055 $ — $ 1,169,055  Elimination of intersegment revenue (33,533) (18,161) — (51,694) — (51,694)  Revenue from external customers $ 304,575 $ 497,090 $ 315,696 $ 1,117,361 $ — $ 1,117,361  Income from construction operations $ 31,888 $ 5,242 $ 14,762 $ 51,892 $ (14,875) (a) $ 37,017  Capital expenditures $ 5,567 $ 45 $ 6 $ 5,618 $ 54 $ 5,672  Depreciation and amortization (b) $ 16,318 $ 518 $ 1,192 $ 18,028 $ 2,968 $ 20,996   Three Months Ended March 31, 2016  Total revenue $ 367,501 $ 487,994 $ 281,773 $ 1,137,268 $ — $ 1,137,268  Elimination of intersegment revenue (31,643) (20,256) — (51,899) — (51,899)  Revenue from external customers $ 335,858 $ 467,738 $ 281,773 $ 1,085,369 $ — $ 1,085,369  Income from construction operations $ 33,665 $ 12,450 $ 9,413 $ 55,528 $ (15,406) (a) $ 40,122  Capital expenditures $ 3,612 $ 221 $ 625 $ 4,458 $ 354 $ 4,812  Depreciation and amortization (b) $ 8,083 $ 557 $ 1,305 $ 9,945 $ 2,864 $ 12,809 ____________________________________________________________________________________________________ (a) Consists primarily of corporate general and administrative expenses. (b) Depreciation and amortization is included in income from construction operations.  During the first three months of 2016 , the Company recorded net favorable adjustment s totaling $ 3.0 million in income from construction operations ( $0. 04 per diluted share) for various Five Star Electric projects in New York in the Specialty Contractors segment. The net impact included material adjustments related to two electrical subcontract projects: a favorable adjustment of $14.0 million for a completed project ( $0.17 per diluted share) and an unfavorable adjustment of $13.8 million for a project that was nearly complete ( $0.17 per diluted share). These were the only changes in estimates considered material to the Company’s results of operations during the periods presented herein.  A reconciliation of segment results to the consolidated income before income taxes is as follows:     Three Months Ended March 31,  (in thousands) 2017 2016  Income from construction operations $ 37,017 $ 40,122  Other income, net 417 682  Interest expense (15,564) (14,080)  Income before income taxes $ 21,870 $ 26,724  Total assets by segment are as follows:     (in thousands) March 31, 2017 December 31, 2016  Civil $ 2,102,432 $ 2,152,123  Building 896,442 917,317  Specialty Contractors 793,507 813,851  Corporate and other (a) 206,102 155,329  Total Assets $ 3,998,483 $ 4,038,620 ____________________________________________________________________________________________________ (a) Consists principally of cash, equipment, tax-related assets and insurance-related assets, offset by the elimination of assets related to intersegment revenue.

Employee Pension Plans

Employee Pension Plans	3 Months Ended
	Mar. 31, 2017
Employee Pension Plans [Abstract]
Employee Pension Plans	(1 2 ) Employee Pension Plans  The Company has a defined benefit pension plan and an unfunded supplemental retirement plan. Effective September 1, 2004, all benefit accruals under the se plan s were frozen; however, the current vested benefit was preserved. The pension disclosure presented below includes aggregated amounts for both of the Company’s plans.  The following table sets forth the net periodic benefit cost for the three months ended March 31, 201 7 and 201 6 :     Three Months Ended March 31,  (in thousands) 2017 2016  Interest cost $ 975 $ 1,053  Expected return on plan assets (1,088) (1,203)  Amortization of net loss 456 427  Other 213 150  Net periodic benefit cost $ 556 $ 427  The Company contributed $0.8 million and $ 0.3 million to its defined benefit pension plan during t he three months ended March 31, 201 7 and 201 6 , respectively , and expects to contribute an additional $1.8 million later in 2017 .

Separate Financial Information

Separate Financial Information of Subsidiary Guarantors of Indebtedness	3 Months Ended
	Mar. 31, 2017
Separate Financial Information of Subsidiary Guarantors of Indebtedness [Abstract]
Separate Financial Information of Subsidiary Guarantors of Indebtedness	(13 ) Separate Financial Information of Subsidiary Guarantors of Indebtedness  The Company’s obligation s on its 2010 Senior Notes are guaranteed by substantially all of the Company’s existing and future subsidiaries that guarantee obligations under the 2014 Credit Facility (the “Guarantors”). The guarantees are full and unconditional as well as joint and several. The Guarantors are wh olly owned subsidiaries of the Company.  The following supplemental condensed consolidating financial information reflects the summarized financial information of the Company as the issuer of the senior unsecured notes, the Guarantors and the Company’s non-guarantor subsidiaries on a combined basis.  TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2017  UNAUDITED        Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Revenue $ 246,011 $ 999,356 $ 6,756 $ (134,762) $ 1,117,361  Cost of operations (223,588) (925,815) — 134,762 (1,014,641)  Gross profit 22,423 73,541 6,756 — 102,720  General and administrative expenses (22,238) (42,998) (467) — (65,703)  Income from construction operations 185 30,543 6,289 — 37,017  Equity in earnings of subsidiaries 23,529 — — (23,529) —  Other income (expense), net (252) 707 307 (345) 417  Interest expense (15,451) (458) — 345 (15,564)  Income before income taxes 8,011 30,792 6,596 (23,529) 21,870  Benefit (provision) for income taxes 5,753 (11,414) (2,445) — (8,106)  Net income (loss) $ 13,764 $ 19,378 $ 4,151 $ (23,529) $ 13,764   Other comprehensive income (loss), net of tax:  Other comprehensive income of subsidiaries (75) — — 75 —  Defined benefit pension plan adjustments 268 — — — 268  Foreign currency translation adjustments — (54) — — (54)  Unrealized loss in fair value of investments — (21) — — (21)  Total other comprehensive (loss) income, net of tax 193 (75) — 75 193   Total Comprehensive Income $ 13,957 $ 19,303 $ 4,151 $ (23,454) $ 13,957  TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2016  UNAUDITED        Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Revenue $ 176,725 $ 986,361 $ 7,104 $ (84,821) $ 1,085,369  Cost of operations (154,289) (910,809) — 84,821 (980,277)  Gross profit 22,436 75,552 7,104 — 105,092  General and administrative expenses (21,658) (42,837) (475) — (64,970)  Income from construction operations 778 32,715 6,629 — 40,122  Equity in earnings of subsidiaries 23,079 — — (23,079) —  Other income (expense), net (621) 1,060 243 — 682  Interest expense (13,484) (596) — — (14,080)  Income before income taxes 9,752 33,179 6,872 (23,079) 26,724  Benefit (provision) for income taxes 5,648 (14,060) (2,912) — (11,324)  Net income (loss) $ 15,400 $ 19,119 $ 3,960 $ (23,079) $ 15,400   Other comprehensive income (loss), net of tax:  Other comprehensive income of subsidiaries 938 — — (938) —  Defined benefit pension plan adjustments 247 — — — 247  Foreign currency translation adjustments — 930 — — 930  Unrealized gain in fair value of investments — 8 — — 8  Unrealized loss in fair value of interest rate swap (35) — — — (35)  Total other comprehensive income, net of tax 1,150 938 — (938) 1,150   Total Comprehensive Income (Loss) $ 16,550 $ 20,057 $ 3,960 $ (24,017) $ 16,550   TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET March 31, 2017  UNAUDITED      Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Assets  Current assets:  Cash and cash equivalents $ 56,767 $ 47,765 $ 285 $ — $ 104,817  Restricted cash 2,017 1,840 56,301 — 60,158  Accounts receivable 435,844 1,432,775 94,653 (213,670) 1,749,602  Costs and estimated earnings in excess of billings 145,252 766,012 152 (70,656) 840,760  Other current assets 43,461 44,863 6,276 (36,118) 58,482  Total current assets 683,341 2,293,255 157,667 (320,444) 2,813,819  Property and equipment, net 62,529 396,571 3,595 — 462,695  Intercompany notes and receivables — 167,761 — (167,761) —  Goodwill — 585,006 — — 585,006  Intangible assets, net — 92,111 — — 92,111  Investment in subsidiaries 2,188,874 — — (2,188,874) —  Other Assets 41,930 8,982 2,407 (8,467) 44,852  Total assets $ 2,976,674 $ 3,543,686 $ 163,669 $ (2,685,546) $ 3,998,483   Liabilities and stockholders' equity  Current liabilities:  Current maturities of long-term debt $ 68,655 $ 23,943 $ — $ (65,000) $ 27,598  Accounts payable 253,609 913,456 4,943 (206,077) 965,931  Billings in excess of costs and estimated earnings 94,701 196,933 9,751 (12,590) 288,795  Accrued expenses and other current liabilities 47,246 86,668 15,311 (36,777) 112,448  Total current liabilities 464,211 1,221,000 30,005 (320,444) 1,394,772  Long-term debt, less current maturities 699,786 59,465 — (6,060) 753,191  Deferred income taxes 16,083 116,940 — (2,407) 130,616  Other long-term liabilities 106,621 2,442 50,714 — 159,777  Intercompany notes and advances payable 129,846 — 37,915 (167,761) —   Contingencies and commitments — — — — —   Stockholders’ equity 1,560,127 2,143,839 45,035 (2,188,874) 1,560,127  Total liabilities and stockholders' equity $ 2,976,674 $ 3,543,686 $ 163,669 $ (2,685,546) $ 3,998,483 TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 201 6  UNAUDITED      Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Assets  Current assets:  Cash and cash equivalents $ 80,829 $ 65,079 $ 195 $ — $ 146,103  Restricted cash 2,016 2,211 46,277 — 50,504  Accounts receivable 426,176 1,441,263 107,380 (231,519) 1,743,300  Costs and estimated earnings in excess of billings 140,901 758,158 152 (67,385) 831,826  Other current assets 76,453 38,889 7,498 (56,817) 66,023  Total current assets 726,375 2,305,600 161,502 (355,721) 2,837,756  Property and equipment, net 74,739 399,091 3,796 — 477,626  Intercompany notes and receivables — 242,382 — (242,382) —  Goodwill — 585,006 — — 585,006  Intangible assets, net — 92,997 — — 92,997  Investment in subsidiaries 2,223,971 — — (2,223,971) —  Other Assets 42,324 8,905 2,407 (8,401) 45,235  Total assets $ 3,067,409 $ 3,633,981 $ 167,705 $ (2,830,475) $ 4,038,620   Liabilities and stockholders' equity  Current liabilities:  Current maturities of long-term debt $ 122,166 $ 23,724 $ — $ (60,000) $ 85,890  Accounts payable 280,342 937,428 2,495 (226,249) 994,016  Billings in excess of costs and estimated earnings 102,373 229,746 19,564 (20,571) 331,112  Accrued expenses and other current liabilities 60,227 76,002 20,597 (48,901) 107,925  Total current liabilities 565,108 1,266,900 42,656 (355,721) 1,518,943  Long-term debt, less current maturities 614,608 65,015 — (5,994) 673,629  Deferred income taxes 16,475 116,939 — (2,407) 131,007  Other long-term liabilities 111,108 2,415 48,495 — 162,018  Intercompany notes and advances payable 207,087 — 35,295 (242,382) —   Contingencies and commitments — — — — —   Stockholders’ equity 1,553,023 2,182,712 41,259 (2,223,971) 1,553,023  Total liabilities and stockholders' equity $ 3,067,409 $ 3,633,981 $ 167,705 $ (2,830,475) $ 4,038,620  TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2017  UNAUDITED      Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Cash flows from operating activities:  Net income $ 13,764 $ 19,378 $ 4,151 $ (23,529) $ 13,764  Adjustments to reconcile net income to net cash provided by (used in) operating activities:  Depreciation and amortization 11,975 8,820 201 — 20,996  Equity in earnings of subsidiaries (23,529) — — 23,529 —  Share-based compensation expense 3,956 350 — — 4,306  Change in debt discount and deferred debt issuance costs 50,636 (46,800) — — 3,836  Deferred income taxes (614) 88 — — (526)  Loss on sale of property and equipment — (131) — — (131)  Other long-term liabilities (4,105) 62 2,219 — (1,824)  Other non-cash items 461 (194) — — 267  Changes in other components of working capital 30,668 (105,124) 923 — (73,533)  NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES 83,212 (123,551) 7,494 — (32,845)   Cash flows from investing activities:  Acquisition of property and equipment excluding financed purchases (155) (5,517) — — (5,672)  Proceeds from sale of property and equipment — 259 — — 259  Decrease (increase) in intercompany advances — 74,626 — (74,626) —  Change in restricted cash (1) 371 (10,024) — (9,654)  NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES (156) 69,739 (10,024) (74,626) (15,067)   Cash flows from financing activities:  Proceeds from debt 319,977 (6,000) — — 313,977  Repayment of debt (292,087) (4,398) — — (296,485)  Issuance of common stock and effect of cashless exercise (10,905) 96 — — (10,809)  Debt issuance costs (46,857) 46,800 — — (57)  Increase (decrease) in intercompany advances (77,246) — 2,620 74,626 —  NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES (107,118) 36,498 2,620 74,626 6,626   Net (decrease) increase in cash and cash equivalents (24,062) (17,314) 90 — (41,286)  Cash and cash equivalents at beginning of period 80,829 65,079 195 — 146,103  Cash and cash equivalents at end of period $ 56,767 $ 47,765 $ 285 $ — $ 104,817 TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2016  UNAUDITED     Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Cash flows from operating activities:  Net income $ 15,400 $ 19,119 $ 3,960 $ (23,079) $ 15,400  Adjustments to reconcile net income to net cash provided by operating activities:  Depreciation and amortization 5,626 8,800 70 — 14,496  Equity in earnings of subsidiaries (23,079) — — 23,079 —  Share-based compensation expense 3,647 — — — 3,647  Deferred income taxes (153) (2) — — (155)  Loss on sale of property and equipment 202 83 — — 285  Other long-term liabilities (3,822) (954) 715 — (4,061)  Other non-cash items (90) 1,489 — — 1,399  Changes in other components of working capital 12,879 (25,578) (2,368) — (15,067)  NET CASH PROVIDED BY OPERATING ACTIVITIES 10,610 2,957 2,377 — 15,944   Cash flows from investing activities:  Acquisition of property and equipment excluding financed purchases (1,282) (3,530) — — (4,812)  Proceeds from sale of property and equipment 75 864 — — 939  Decrease (increase) in intercompany advances — 24,653 — (24,653) —  Change in restricted cash 109 (403) (3,011) — (3,305)  NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES (1,098) 21,584 (3,011) (24,653) (7,178)   Cash flows from financing activities:  Proceeds from debt 299,785 — — — 299,785  Repayment of debt (276,202) (11,282) — — (287,484)  Debt issuance costs (5,937) — — — (5,937)  Increase (decrease) in intercompany advances (24,628) — (25) 24,653 —  NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES (6,982) (11,282) (25) 24,653 6,364   Net increase (decrease) in cash and cash equivalents 2,530 13,259 (659) — 15,130  Cash and cash equivalents at beginning of period 47,196 26,892 1,364 — 75,452  Cash and cash equivalents at end of period $ 49,726 $ 40,151 $ 705 $ — $ 90,582

Recent Accounting Pronounceme20

Recent Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2017
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	In May 2014, the Financial Accounting Standards Board (“ FASB ”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Custo mers (Topic 606) , as amended by subsequent ASUs (collectively, “ASU 2014-09”). ASU 2014-09 amend s the existing accounting standards for revenue recognition and establishes principles for recognizing revenue upon the transfer of promised goods or services to customers based on the expected consideration to be received in exchange for those goods or services. The guidance will be effective for the Company as of January 1, 2018. The amendments may be applied retrospectively to each prior period presented or with the cumulative effect recognized as of the date of initial application (modified retrospective method). The Company is currently reviewing contracts in order to determine the impact, if any, the adoption of ASU 2014-09 will have on its consolidated financial statements. A number of industry-specific implementation issues are still unresolved , and the final resolution of certain of these issues could impact the Company’s current accounting policies and/or revenue recognition patterns. The Company currently expects to adopt this new standard using the modified retrospective method.  In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350) , Simplifying the Test for Goodwill Impairment . This ASU simplifie s the calculation of goodwill impairment by eliminating Step 2 of the impairment test as required by the current guidance . Step 2 requires companies to calculate the implied fair value of their goodwill by estimating the fair value of their assets, other than goodwill, and liabilities, including unrecognized assets and liabilities, following the procedure s that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. The calculated net fair value of the assets would then be compared to the fair value of the reporting unit to determine the implied fair value of goodwill, and to the extent that the carrying value of goodwill was less than the implied fair value, a loss would be recognized. Under ASU 2017-04, however, goodwill is impaired when the calculated fair value of a reporting unit is less than its carrying value, and the impairment charge will equal that difference ( i.e., impairment will be calculated at the reporting unit level and there will be no need to estimate the fair value of individual assets and liabilities ) . This guidance will be effective for the Company for any goodwill impairment tests performed in years be ginning after December 15, 2019; however, early adoption is permitted for tests performed on testing dates after January 1, 2017. The Company does not expect the adoption of this ASU to have a material impact on its consolidated financial statements.  In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230) - Restricted Cash . This ASU requires that restricted cash and restricted cash equivalents be aggregated with cash and cash equivalents in the statement of cash flows; thus the statement will reconcile the aggregate beginning-of-period and end-of-period balances. Consequently, changes in restricted cash and restricted cash equivalents will no longer be presented as a component of cash flows from investing activities in the statement of cash flows. The Company expects to retrospectively adopt this ASU effective January 1, 201 8.  In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which amends the existing lease guidance. This ASU requires the recognition of lease assets and lease liabilities by lessees for those leases currently classified as operating leases. Other significant provisions of the amendment include (i) defining the “lease term” to include the non-cancellable period together with periods for which there is a significant economic incentive for the lessee to extend or not terminate the lease; (ii) defining the initial lease liability to be recorded on the balance sheet to contemplate only those variable lease payments that depend on an index or that are in substance “fixed”; and (iii) a dual approach for determining whether lease expense is recognized on a straight-line or accelerated basis, depending on whether the lessee is expected to utilize more than an insignificant portion of the leased asset’s economic benefits. This will be effective for the Company as of January 1, 2019 and will be applied using the modified retrospective transition method for existing leases. The Company is currently evaluating the effect that the adoption of this ASU will have on its consolidated financial statements

Earnings Per Common Share (EP21

Earnings Per Common Share (EPS) (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Common Share (EPS) [Abstract]
Calculations of the Basic and Diluted EPS	   Three Months Ended March 31,  (in thousands, except per share amounts) 2017 2016  Net income $ 13,764 $ 15,400   Weighted-average common shares outstanding, basic 49,282 49,079  Effect of dilutive restricted stock units and stock options 1,666 206  Weighted-average common shares outstanding, diluted 50,948 49,285   Earnings per common share:  Basic earnings per common share $ 0.28 $ 0.31  Diluted earnings per common share $ 0.27 $ 0.31   Anti-dilutive shares not included above 930 1,704 

Costs and estimated earnings 22

Costs and estimated earnings in excess of billings (Tables)	3 Months Ended
	Mar. 31, 2017
Costs and estimated earnings in excess of billings [Abstract]
Costs And Estimated Earnings In Excess Of Billings	   As of March 31, As of December 31,  (in thousands) 2017 2016  Claims $ 464,220 $ 477,425  Unapproved change orders 250,114 207,475  Other unbilled costs and profits 126,426 146,926  Total costs and estimated earnings in excess of billings $ 840,760 $ 831,826 

Financial Commitments (Tables)

Financial Commitments (Tables)	3 Months Ended
	Mar. 31, 2017
Financial Commitments [Abstract]
Long-term Debt	   As of March 31, As of December 31,  (in thousands) 2017 2016  Term Loan $ 47,699 $ 54,650  2014 Revolver 181,302 147,990  2010 Senior Notes 298,374 298,120  Convertible Notes 154,832 152,668  Equipment financing, mortgages and acquisition-related notes 95,453 101,558  Other indebtedness 3,129 4,533  Total debt 780,789 759,519  Less – current maturities (27,598) (85,890)  Long-term debt, net $ 753,191 $ 673,629 
Reconciliation Of Outstanding Debt Balance To Reported Debt Balance	   As of March 31, 2017 As of December 31, 2016  (in thousands) Outstanding Long-Term Debt Unamortized Discounts and Issuance Costs Long-Term Debt, as reported Outstanding Long-Term Debt Unamortized Discounts and Issuance Costs Long-Term Debt, as reported  Term Loan $ 49,500 $ (1,801) $ 47,699 $ 57,000 $ (2,350) $ 54,650  2014 Revolver 185,000 (3,698) 181,302 152,500 (4,510) 147,990  2010 Senior Notes 300,000 (1,626) 298,374 300,000 (1,880) 298,120  Convertible Notes 200,000 (45,168) 154,832 200,000 (47,332) 152,668 
Summary Of Interest Expense As Reported In The Condensed Consolidated Statements of Operations	   Three Months Ended  March 31,  (in thousands) 2017 2016  Cash interest expense:  Interest on 2014 Credit Facility $ 3,709 $ 5,338  Interest on 2010 Senior Notes 5,719 5,719  Interest on Convertible Notes 1,438 —  Other interest 862 1,336  Total cash interest expense 11,728 12,393   Non-cash interest expense: (a)  Amortization of debt issuance costs on 2014 Credit Facility 1,418 1,439  Amortization of discount and debt issuance costs on 2010 Senior Notes 254 248  Amortization of discount and debt issuance costs on Convertible Notes 2,164 —  Total non-cash interest expense 3,836 1,687   Total cash and non-cash interest expense $ 15,564 $ 14,080 ____________________________________________________________________________________________________ (a) Non-cash interest expense, when combined with cash interest expense, produces effective interest rates that are higher than contractual rates. Accordingly, the effective interest rates for the quarter ended March 31, 2017 are as follows: for the 2014 Credit Facility, 9.86% ; for the 2010 Senior Notes, 7.99% ; and for the Convertible Notes, 9.39% .

Other Comprehensive Income (L24

Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2017
Other Comprehensive Income (Loss) [Abstract]
Schedule Of Tax Effects Of The Components Of Other Comprehensive Income (Loss)	   Three Months Ended Three Months Ended  March 31, 2017 March 31, 2016  (in thousands) Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount  Other comprehensive income:  Defined benefit pension plan adjustments $ 455 $ (187) $ 268 $ 427 $ (180) $ 247  Foreign currency translation adjustments (92) 38 (54) 1,604 (674) 930  Unrealized (loss) gain in fair value of investments (36) 15 (21) 13 (5) 8  Unrealized loss in fair value of interest rate swap — — — (62) 27 (35)  Total other comprehensive income $ 327 $ (134) $ 193 $ 1,982 $ (832) $ 1,150 
Schedule Of Changes In AOCI Balances By Component (After-Tax)	The changes in AOCI balances by component (after tax) for the three months ended March 31, 2017 and 2016 are as follows:      Three Months Ended March 31, 2017  Unrealized  Defined Gain (Loss) in Accumulated  Benefit Foreign Fair Value of Other  Pension Currency Investments, Comprehensive  (in thousands) Plan Translation Net Loss  Balance as of December 31, 2016 $ (40,865) $ (4,864) $ 316 $ (45,413)  Other comprehensive loss before reclassifications — (54) (21) (75)  Amounts reclassified from AOCI 268 — — 268  Total other comprehensive income (loss) 268 (54) (21) 193  Balance as of March 31, 2017 $ (40,597) $ (4,918) $ 295 $ (45,220)      Three Months Ended March 31, 2016  Unrealized Unrealized  Defined Gain in Fair Gain (Loss) in Accumulated  Benefit Foreign Value of Fair Value of Other  Pension Currency Investments, Interest Rate Comprehensive  (in thousands) Plan Translation Net Swap, Net Loss  Balance as of December 31, 2015 $ (38,242) $ (4,603) $ 656 $ 24 $ (42,165)  Other comprehensive gain (loss) before reclassifications — 930 8 (35) 903  Amounts reclassified from AOCI 247 — — — 247  Total other comprehensive income (loss) 247 930 8 (35) 1,150  Balance as of March 31, 2016 $ (37,995) $ (3,673) $ 664 $ (11) $ (41,015) 
Schedule Of Items Reclassified Out Of AOCI And The Corresponding Location And Impact On The Condensed Consolidated Statement Of Operations	   Location in Three Months Ended  Condensed Consolidated March 31,  (in thousands) Statements of Operations 2017 2016  Defined benefit pension plan adjustments Various accounts (a) $ 455 $ 427  Income tax benefit Provision for income taxes (187) (180)  Net of tax $ 268 $ 247 ____________________________________________________________________________________________________ (a) Defined benefit pension plan adjustments were reclassified primarily to cost of operations and general and administrative expenses.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Measurements [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	    As of March 31, 2017 As of December 31, 2016  Fair Value Hierarchy Fair Value Hierarchy  (in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3  Cash and cash equivalents (a) $ 104,817 $ 104,817 $ — $ — $ 146,103 $ 146,103 $ — $ —  Restricted cash (a) 60,158 60,158 — — 50,504 50,504 — —  Investments in lieu of retainage (b) 53,852 50,317 3,535 — 51,266 46,855 4,411 —  Total $ 218,827 $ 215,292 $ 3,535 $ — $ 247,873 $ 243,462 $ 4,411 $ — ____________________________________________________________________________________________________ (a) Includes money market funds with original maturity dates of three months or less. (b) Investments in lieu of customer retainage are classified as accounts receivable and are comprised of money market funds and municipal bonds, the majority of which are rated Aa3 or better. The fair values of the money market funds are measured using quoted market prices; therefore, they are classified as Level 1 assets. The fair values of municipal bonds are measured using readily available pricing sources for comparable instruments; therefore, they are classified as Level 2 assets.

Business Segments (Tables)

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2017
Business Segments [Abstract]
Reportable Segments	  Reportable Segments  Specialty Consolidated  (in thousands) Civil Building Contractors Total Corporate Total  Three Months Ended March 31, 2017  Total revenue $ 338,108 $ 515,251 $ 315,696 $ 1,169,055 $ — $ 1,169,055  Elimination of intersegment revenue (33,533) (18,161) — (51,694) — (51,694)  Revenue from external customers $ 304,575 $ 497,090 $ 315,696 $ 1,117,361 $ — $ 1,117,361  Income from construction operations $ 31,888 $ 5,242 $ 14,762 $ 51,892 $ (14,875) (a) $ 37,017  Capital expenditures $ 5,567 $ 45 $ 6 $ 5,618 $ 54 $ 5,672  Depreciation and amortization (b) $ 16,318 $ 518 $ 1,192 $ 18,028 $ 2,968 $ 20,996   Three Months Ended March 31, 2016  Total revenue $ 367,501 $ 487,994 $ 281,773 $ 1,137,268 $ — $ 1,137,268  Elimination of intersegment revenue (31,643) (20,256) — (51,899) — (51,899)  Revenue from external customers $ 335,858 $ 467,738 $ 281,773 $ 1,085,369 $ — $ 1,085,369  Income from construction operations $ 33,665 $ 12,450 $ 9,413 $ 55,528 $ (15,406) (a) $ 40,122  Capital expenditures $ 3,612 $ 221 $ 625 $ 4,458 $ 354 $ 4,812  Depreciation and amortization (b) $ 8,083 $ 557 $ 1,305 $ 9,945 $ 2,864 $ 12,809 ____________________________________________________________________________________________________ (a) Consists primarily of corporate general and administrative expenses. (b) Depreciation and amortization is included in income from construction operations.
Reconciliation of Segment Results to Consolidated Income Before Income Taxes	   Three Months Ended March 31,  (in thousands) 2017 2016  Income from construction operations $ 37,017 $ 40,122  Other income, net 417 682  Interest expense (15,564) (14,080)  Income before income taxes $ 21,870 $ 26,724 
Schedule of Assets by Segment	   (in thousands) March 31, 2017 December 31, 2016  Civil $ 2,102,432 $ 2,152,123  Building 896,442 917,317  Specialty Contractors 793,507 813,851  Corporate and other (a) 206,102 155,329  Total Assets $ 3,998,483 $ 4,038,620 ____________________________________________________________________________________________________ (a) Consists principally of cash, equipment, tax-related assets and insurance-related assets, offset by the elimination of assets related to intersegment revenue.

Employee Pension Plans (Tables)

Employee Pension Plans (Tables)	3 Months Ended
	Mar. 31, 2017
Employee Pension Plans [Abstract]
Components of Net Periodic Benefit Cost	   Three Months Ended March 31,  (in thousands) 2017 2016  Interest cost $ 975 $ 1,053  Expected return on plan assets (1,088) (1,203)  Amortization of net loss 456 427  Other 213 150  Net periodic benefit cost $ 556 $ 427 

Separate Financial Informatio28

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Tables)	3 Months Ended
	Mar. 31, 2017
Separate Financial Information of Subsidiary Guarantors of Indebtedness [Abstract]
Condensed Consolidating Statement of Operations	TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2017  UNAUDITED        Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Revenue $ 246,011 $ 999,356 $ 6,756 $ (134,762) $ 1,117,361  Cost of operations (223,588) (925,815) — 134,762 (1,014,641)  Gross profit 22,423 73,541 6,756 — 102,720  General and administrative expenses (22,238) (42,998) (467) — (65,703)  Income from construction operations 185 30,543 6,289 — 37,017  Equity in earnings of subsidiaries 23,529 — — (23,529) —  Other income (expense), net (252) 707 307 (345) 417  Interest expense (15,451) (458) — 345 (15,564)  Income before income taxes 8,011 30,792 6,596 (23,529) 21,870  Benefit (provision) for income taxes 5,753 (11,414) (2,445) — (8,106)  Net income (loss) $ 13,764 $ 19,378 $ 4,151 $ (23,529) $ 13,764   Other comprehensive income (loss), net of tax:  Other comprehensive income of subsidiaries (75) — — 75 —  Defined benefit pension plan adjustments 268 — — — 268  Foreign currency translation adjustments — (54) — — (54)  Unrealized loss in fair value of investments — (21) — — (21)  Total other comprehensive (loss) income, net of tax 193 (75) — 75 193   Total Comprehensive Income $ 13,957 $ 19,303 $ 4,151 $ (23,454) $ 13,957  TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2016  UNAUDITED        Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Revenue $ 176,725 $ 986,361 $ 7,104 $ (84,821) $ 1,085,369  Cost of operations (154,289) (910,809) — 84,821 (980,277)  Gross profit 22,436 75,552 7,104 — 105,092  General and administrative expenses (21,658) (42,837) (475) — (64,970)  Income from construction operations 778 32,715 6,629 — 40,122  Equity in earnings of subsidiaries 23,079 — — (23,079) —  Other income (expense), net (621) 1,060 243 — 682  Interest expense (13,484) (596) — — (14,080)  Income before income taxes 9,752 33,179 6,872 (23,079) 26,724  Benefit (provision) for income taxes 5,648 (14,060) (2,912) — (11,324)  Net income (loss) $ 15,400 $ 19,119 $ 3,960 $ (23,079) $ 15,400   Other comprehensive income (loss), net of tax:  Other comprehensive income of subsidiaries 938 — — (938) —  Defined benefit pension plan adjustments 247 — — — 247  Foreign currency translation adjustments — 930 — — 930  Unrealized gain in fair value of investments — 8 — — 8  Unrealized loss in fair value of interest rate swap (35) — — — (35)  Total other comprehensive income, net of tax 1,150 938 — (938) 1,150   Total Comprehensive Income (Loss) $ 16,550 $ 20,057 $ 3,960 $ (24,017) $ 16,550  
Condensed Consolidating Balance Sheet	TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET March 31, 2017  UNAUDITED      Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Assets  Current assets:  Cash and cash equivalents $ 56,767 $ 47,765 $ 285 $ — $ 104,817  Restricted cash 2,017 1,840 56,301 — 60,158  Accounts receivable 435,844 1,432,775 94,653 (213,670) 1,749,602  Costs and estimated earnings in excess of billings 145,252 766,012 152 (70,656) 840,760  Other current assets 43,461 44,863 6,276 (36,118) 58,482  Total current assets 683,341 2,293,255 157,667 (320,444) 2,813,819  Property and equipment, net 62,529 396,571 3,595 — 462,695  Intercompany notes and receivables — 167,761 — (167,761) —  Goodwill — 585,006 — — 585,006  Intangible assets, net — 92,111 — — 92,111  Investment in subsidiaries 2,188,874 — — (2,188,874) —  Other Assets 41,930 8,982 2,407 (8,467) 44,852  Total assets $ 2,976,674 $ 3,543,686 $ 163,669 $ (2,685,546) $ 3,998,483   Liabilities and stockholders' equity  Current liabilities:  Current maturities of long-term debt $ 68,655 $ 23,943 $ — $ (65,000) $ 27,598  Accounts payable 253,609 913,456 4,943 (206,077) 965,931  Billings in excess of costs and estimated earnings 94,701 196,933 9,751 (12,590) 288,795  Accrued expenses and other current liabilities 47,246 86,668 15,311 (36,777) 112,448  Total current liabilities 464,211 1,221,000 30,005 (320,444) 1,394,772  Long-term debt, less current maturities 699,786 59,465 — (6,060) 753,191  Deferred income taxes 16,083 116,940 — (2,407) 130,616  Other long-term liabilities 106,621 2,442 50,714 — 159,777  Intercompany notes and advances payable 129,846 — 37,915 (167,761) —   Contingencies and commitments — — — — —   Stockholders’ equity 1,560,127 2,143,839 45,035 (2,188,874) 1,560,127  Total liabilities and stockholders' equity $ 2,976,674 $ 3,543,686 $ 163,669 $ (2,685,546) $ 3,998,483 TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 201 6  UNAUDITED      Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Assets  Current assets:  Cash and cash equivalents $ 80,829 $ 65,079 $ 195 $ — $ 146,103  Restricted cash 2,016 2,211 46,277 — 50,504  Accounts receivable 426,176 1,441,263 107,380 (231,519) 1,743,300  Costs and estimated earnings in excess of billings 140,901 758,158 152 (67,385) 831,826  Other current assets 76,453 38,889 7,498 (56,817) 66,023  Total current assets 726,375 2,305,600 161,502 (355,721) 2,837,756  Property and equipment, net 74,739 399,091 3,796 — 477,626  Intercompany notes and receivables — 242,382 — (242,382) —  Goodwill — 585,006 — — 585,006  Intangible assets, net — 92,997 — — 92,997  Investment in subsidiaries 2,223,971 — — (2,223,971) —  Other Assets 42,324 8,905 2,407 (8,401) 45,235  Total assets $ 3,067,409 $ 3,633,981 $ 167,705 $ (2,830,475) $ 4,038,620   Liabilities and stockholders' equity  Current liabilities:  Current maturities of long-term debt $ 122,166 $ 23,724 $ — $ (60,000) $ 85,890  Accounts payable 280,342 937,428 2,495 (226,249) 994,016  Billings in excess of costs and estimated earnings 102,373 229,746 19,564 (20,571) 331,112  Accrued expenses and other current liabilities 60,227 76,002 20,597 (48,901) 107,925  Total current liabilities 565,108 1,266,900 42,656 (355,721) 1,518,943  Long-term debt, less current maturities 614,608 65,015 — (5,994) 673,629  Deferred income taxes 16,475 116,939 — (2,407) 131,007  Other long-term liabilities 111,108 2,415 48,495 — 162,018  Intercompany notes and advances payable 207,087 — 35,295 (242,382) —   Contingencies and commitments — — — — —   Stockholders’ equity 1,553,023 2,182,712 41,259 (2,223,971) 1,553,023  Total liabilities and stockholders' equity $ 3,067,409 $ 3,633,981 $ 167,705 $ (2,830,475) $ 4,038,620 
Condensed Consolidating Statement of Cash Flows	TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2017  UNAUDITED      Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Cash flows from operating activities:  Net income $ 13,764 $ 19,378 $ 4,151 $ (23,529) $ 13,764  Adjustments to reconcile net income to net cash provided by (used in) operating activities:  Depreciation and amortization 11,975 8,820 201 — 20,996  Equity in earnings of subsidiaries (23,529) — — 23,529 —  Share-based compensation expense 3,956 350 — — 4,306  Change in debt discount and deferred debt issuance costs 50,636 (46,800) — — 3,836  Deferred income taxes (614) 88 — — (526)  Loss on sale of property and equipment — (131) — — (131)  Other long-term liabilities (4,105) 62 2,219 — (1,824)  Other non-cash items 461 (194) — — 267  Changes in other components of working capital 30,668 (105,124) 923 — (73,533)  NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES 83,212 (123,551) 7,494 — (32,845)   Cash flows from investing activities:  Acquisition of property and equipment excluding financed purchases (155) (5,517) — — (5,672)  Proceeds from sale of property and equipment — 259 — — 259  Decrease (increase) in intercompany advances — 74,626 — (74,626) —  Change in restricted cash (1) 371 (10,024) — (9,654)  NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES (156) 69,739 (10,024) (74,626) (15,067)   Cash flows from financing activities:  Proceeds from debt 319,977 (6,000) — — 313,977  Repayment of debt (292,087) (4,398) — — (296,485)  Issuance of common stock and effect of cashless exercise (10,905) 96 — — (10,809)  Debt issuance costs (46,857) 46,800 — — (57)  Increase (decrease) in intercompany advances (77,246) — 2,620 74,626 —  NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES (107,118) 36,498 2,620 74,626 6,626   Net (decrease) increase in cash and cash equivalents (24,062) (17,314) 90 — (41,286)  Cash and cash equivalents at beginning of period 80,829 65,079 195 — 146,103  Cash and cash equivalents at end of period $ 56,767 $ 47,765 $ 285 $ — $ 104,817 TUTOR PERINI CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS THREE MONTHS ENDED MARCH 31, 2016  UNAUDITED     Non-  Tutor Perini Guarantor Guarantor Total  (in thousands) Corporation Subsidiaries Subsidiaries Eliminations Consolidated  Cash flows from operating activities:  Net income $ 15,400 $ 19,119 $ 3,960 $ (23,079) $ 15,400  Adjustments to reconcile net income to net cash provided by operating activities:  Depreciation and amortization 5,626 8,800 70 — 14,496  Equity in earnings of subsidiaries (23,079) — — 23,079 —  Share-based compensation expense 3,647 — — — 3,647  Deferred income taxes (153) (2) — — (155)  Loss on sale of property and equipment 202 83 — — 285  Other long-term liabilities (3,822) (954) 715 — (4,061)  Other non-cash items (90) 1,489 — — 1,399  Changes in other components of working capital 12,879 (25,578) (2,368) — (15,067)  NET CASH PROVIDED BY OPERATING ACTIVITIES 10,610 2,957 2,377 — 15,944   Cash flows from investing activities:  Acquisition of property and equipment excluding financed purchases (1,282) (3,530) — — (4,812)  Proceeds from sale of property and equipment 75 864 — — 939  Decrease (increase) in intercompany advances — 24,653 — (24,653) —  Change in restricted cash 109 (403) (3,011) — (3,305)  NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES (1,098) 21,584 (3,011) (24,653) (7,178)   Cash flows from financing activities:  Proceeds from debt 299,785 — — — 299,785  Repayment of debt (276,202) (11,282) — — (287,484)  Debt issuance costs (5,937) — — — (5,937)  Increase (decrease) in intercompany advances (24,628) — (25) 24,653 —  NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES (6,982) (11,282) (25) 24,653 6,364   Net increase (decrease) in cash and cash equivalents 2,530 13,259 (659) — 15,130  Cash and cash equivalents at beginning of period 47,196 26,892 1,364 — 75,452  Cash and cash equivalents at end of period $ 49,726 $ 40,151 $ 705 $ — $ 90,582 

Earnings Per Common Share (EP29

Earnings Per Common Share (EPS) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income	$ 13,764	$ 15,400
Weighted-average common shares outstanding - basic	49,282,000	49,079,000
Effect of dilutive restricted stock units and stock options	1,666,000	206,000
Weighted-average common shares outstanding - diluted	50,948,000	49,285,000
Net income per share: Basic	$ 0.28	$ 0.31
Net income per share: Diluted	$ 0.27	$ 0.31
Anti-dilutive shares not included above	930,000	1,704,000
Convertible Notes [Member]
Percentage of conversion price	130.00%
Conversion price, shares	33.0579
Conversion price	$ 30.25

Costs And Estimated Earnings 30

Costs And Estimated Earnings In Excess Of Billings (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Costs and estimated earnings in excess of billings [Abstract]
Claims	$ 464,220	$ 477,425
Unapproved change orders	250,114	207,475
Other unbilled costs and profits	126,426	146,926
Total costs and estimated earnings in excess of billings	$ 840,760	$ 831,826

Financial Commitments (Narrativ

Financial Commitments (Narrative) (Details) - USD ($)	Apr. 20, 2017	Apr. 20, 2017	Mar. 31, 2017
Letters Of Credit [Member]
Debt Instrument [Line Items]
Face amount			$ 150,000,000
Letters of credit outstanding			200,000
Letters Of Credit [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Face amount	$ 150,000,000	$ 150,000,000
Applicable margin and letter of credit fees will be increased percentage per annum.	2.00%
Swingline Loans [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Face amount	$ 10,000,000	10,000,000
Convertible Notes [Member]
Debt Instrument [Line Items]
Face amount			$ 200,000,000
Interest rate			2.875%
Maturity date			Jun. 15, 2021
Percentage of conversion price			130.00%
Conversion price, shares			33.0579
Conversion price			$ 30.25
Effective interest rates			9.39%
Convertible Notes [Member] | Circumstance One [Member]
Debt Instrument [Line Items]
Business day period after consecutive trading day period			5 days
Consecutive trading day period			10 days
Percentage of conversion price			98.00%
Conversion price, principal amount			$ 1,000
Convertible Notes [Member] | Circumstance Two [Member]
Debt Instrument [Line Items]
Business day period after consecutive trading day period			20 days
Percentage of conversion price			130.00%
Conversion price			$ 39.32
Term Loan [Member]
Debt Instrument [Line Items]
Face amount			$ 250,000,000
2010 Senior Notes [Member]
Debt Instrument [Line Items]
Face amount			$ 300,000,000
Interest rate			7.625%
Maturity date			Nov. 1, 2018
Effective interest rates			7.99%
2017 Senior Notes [Member] | Private Placement [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Face amount	$ 500,000,000	$ 500,000,000
Interest rate	6.875%	6.875%
Redemption price, change of control triggering event (as a percent)		101.00%
2017 Senior Notes [Member] | Circumstance One [Member] | Private Placement [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Redemption price		100.00%
2017 Senior Notes [Member] | Circumstance Two [Member] | Private Placement [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Redemption price		106.875%
Minimum [Member[ | Convertible Notes [Member] | Circumstance Two [Member]
Debt Instrument [Line Items]
Consecutive trading day period			30 days
Maximum [Member] | 2017 Senior Notes [Member] | Circumstance Two [Member] | Private Placement [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Percentage of notes that can be redeemed		40.00%
2014 Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date			May 1, 2018
Effective interest rates			9.86%
2017 Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maturity date	Apr. 20, 2022
Additional borrowing	$ 150,000,000	$ 150,000,000
Fixed charge coverage ratio	1.25
2017 Credit Facility [Member] | Minimum [Member[ | Subsequent Event [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio	3.25	3.25
2017 Credit Facility [Member] | Maximum [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio	4	4
2014 Revolver [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 300,000,000
Available borrowing capacity			$ 114,800,000
2014 Revolver [Member] | LIBOR | Minimum [Member[ | Term Loan [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)			1.25%
2014 Revolver [Member] | LIBOR | Maximum [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)			3.00%
2017 Revolver [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 350,000,000	$ 350,000,000
2017 Revolver [Member] | LIBOR | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)	2.50%
2017 Revolver [Member] | LIBOR | Circumstance Three [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)	1.00%
2017 Revolver [Member] | LIBOR | Minimum [Member[ | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)	1.50%
2017 Revolver [Member] | LIBOR | Maximum [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)	3.00%
2017 Revolver [Member] | Base Rate [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate	0.00%	0.00%
Basis points added to reference rate (as a percent)	1.50%
2017 Revolver [Member] | Base Rate [Member] | Minimum [Member[ | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)	0.50%
2017 Revolver [Member] | Base Rate [Member] | Maximum [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)	2.00%
2017 Revolver [Member] | Federal Funds Rate [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Basis points added to reference rate (as a percent)	0.50%

Financial Commitments (Long-Ter

Financial Commitments (Long-Term Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total debt, net	$ 780,789	$ 759,519
Less - current maturities	(27,598)	(85,890)
Long-term debt, net	753,191	673,629
2010 Senior Notes [Member]
Debt Instrument [Line Items]
Total debt, net	298,374	298,120
Term Loan [Member]
Debt Instrument [Line Items]
Total debt, net	47,699	54,650
Convertible Notes [Member]
Debt Instrument [Line Items]
Total debt, net	154,832	152,668
Equipment Financing, Mortgages And Acquisition-Related Notes [Member]
Debt Instrument [Line Items]
Total debt, net	95,453	101,558
Other Indebtedness [Member]
Debt Instrument [Line Items]
Total debt, net	3,129	4,533
2014 Revolver [Member]
Debt Instrument [Line Items]
Total debt, net	$ 181,302	$ 147,990

Financial Commitments (Reconcil

Financial Commitments (Reconciliation Of Outstanding Debt Balance To Reported Debt Balance) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Less – unamortized discount and deferred issuance cost	$ (52,293)	$ (56,072)
Total debt, net	780,789	759,519
2014 Revolver [Member]
Debt Instrument [Line Items]
Outstanding Long-Term Debt	185,000	152,500
Less – unamortized discount and deferred issuance cost	(3,698)	(4,510)
Total debt, net	181,302	147,990
Term Loan [Member]
Debt Instrument [Line Items]
Outstanding Long-Term Debt	49,500	57,000
Less – unamortized discount and deferred issuance cost	(1,801)	(2,350)
Total debt, net	47,699	54,650
2010 Senior Notes [Member]
Debt Instrument [Line Items]
Outstanding Long-Term Debt	300,000	300,000
Less – unamortized discount and deferred issuance cost	(1,626)	(1,880)
Total debt, net	298,374	298,120
Convertible Notes [Member]
Debt Instrument [Line Items]
Outstanding Long-Term Debt	200,000	200,000
Less – unamortized discount and deferred issuance cost	(45,168)	(47,332)
Total debt, net	$ 154,832	$ 152,668

Financial Commitments (Summary

Financial Commitments (Summary Of Interest Expense As Reported In The Condensed Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other interest	$ 862	$ 1,336
Total cash interest expense	11,728	12,393
Total non-cash interest expense	3,836	1,687
Total cash and non-cash interest expense	15,564	14,080
2010 Senior Notes [Member]
Interest on debt	5,719	5,719
Total non-cash interest expense	$ 254	248
Effective interest rates	7.99%
Convertible Notes [Member]
Interest on debt	$ 1,438
Total non-cash interest expense	$ 2,164
Effective interest rates	9.39%
2014 Credit Facility [Member]
Interest on debt	$ 3,709	5,338
Total non-cash interest expense	$ 1,418	$ 1,439
Effective interest rates	9.86%

Contingencies and Commitments (

Contingencies and Commitments (Details) $ in Thousands

Oct. 01, 2014USD ($)

Mar. 20, 2014USD ($)

Oct. 30, 2013USD ($)

Aug. 20, 2013USD ($)

Mar. 31, 2015USD ($)

Mar. 31, 2011USD ($)

Jun. 30, 2003USD ($)

Mar. 31, 2017USD ($)ft²claim

Mar. 31, 2016USD ($)

Dec. 31, 2009USD ($)room

Dec. 31, 2016USD ($)

Jul. 31, 2014USD ($)

May 31, 2012USD ($)

Sep. 30, 2011USD ($)

Jul. 31, 2010USD ($)

May 31, 2010USD ($)

Mar. 31, 2010USD ($)

Jun. 30, 2009USD ($)

Feb. 28, 2006USD ($)

Loss Contingencies [Line Items]

Contract receivables

$ 1,749,602

$ 1,743,300

Income from construction operations

37,017

$ 40,122

Tutor Perini Corporation [Member]

Loss Contingencies [Line Items]

Contract receivables

435,844

$ 426,176

Income from construction operations

185

$ 778

Long Island Expressway/Cross Island Parkway Matter [Member]

Loss Contingencies [Line Items]

Estimated value of project completed in Feb. 2006

$ 130,000

Value of claim filed

$ 53,800

Amount receivable as per final agreement

$ 500

Value of counterclaim filed

$ 151,000

Fontainebleau Matter [Member]

Loss Contingencies [Line Items]

Number of rooms in hotel/casino complex | room

3,800

Amount of court order in favor of plaintiff

$ 45,000

Total outstanding liens on property, including subcontractors' liens

$ 44,000

Amount set aside from approved sale for distribution to satisfy creditor claims

$ 125,000

Estimated sustainable lien amount

$ 350,000

Honeywell Street/Queens Boulevard Bridges Matter [Member]

Loss Contingencies [Line Items]

Value of claim filed

$ 8,800

Value of counterclaim filed

$ 74,600

Release of retention plus interest

$ 1,100

Westgate Planet Hollywood Matter [Member]

Loss Contingencies [Line Items]

Settlement receipt

$ 600

Total awards

19,700

Damages awarded which were anticipated to be paid including interest

$ 3,100

Value of cross complaint filed

$ 51,000

Value of counterclaim filed

45,000

Total outstanding liens on property, including subcontractors' liens

23,200

Value of mechanic's lien release bond

$ 22,300

$ 22,300

Value of supersedeas bond

1,700

Total value of security

$ 24,000

U.S. Department of Commerce, National Oceanic and Atmospheric Administration Matter [Member]

Loss Contingencies [Line Items]

Total awards

$ 1,000

Value of claim filed

$ 700

$ 2,600

$ 26,800

Number of claims | claim

3

Square footage of facility | ft²

287,000

Total awards denied

$ 29,500

Share-Based Compensation (Detai

Share-Based Compensation (Details) - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Restricted Stock Units [Member]
Share-Based Compensation [Line Items]
Units granted	665,000	483,387
Weighted-average per share prices	$ 30.48	$ 19.14
Stock Options [Member]
Share-Based Compensation [Line Items]
Stock options awarded	265,000	274,000
Weighted-average exercise prices	$ 23.47	$ 16.20
Performance-based Restricted Stock Units [Member]
Share-Based Compensation [Line Items]
Units forfeited	20,985
Units forfeited, Weighted Average Exercise Price	$ 23.91
Performance-based Stock Options [Member]
Share-Based Compensation [Line Items]
Options forfeited	19,466
Options forfeited, Weighted Average Exercise Price	$ 26.56

Other Comprehensive Income (L37

Other Comprehensive Income (Loss) (Schedule Of Tax Effects Of The Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Comprehensive Income (Loss) [Abstract]
Defined benefit pension plan adjustments, Before-Tax Amount	$ 455	$ 427
Defined benefit pension plan adjustments, Tax (Expense) Benefit	(187)	(180)
Defined benefit pension plan adjustments, Net-of-Tax Amount	268	247
Foreign currency translation adjustments, Before-Tax Amount	(92)	1,604
Foreign currency translation adjustments, Tax (Expense) Benefit	38	(674)
Foreign currency translation adjustments, Net-of-Tax Amount	(54)	930
Unrealized (loss) gain in fair value of investments, Before-Tax Amount	(36)	13
Unrealized (loss) gain in fair value of investments, Tax (Expense) Benefit	15	(5)
Unrealized (loss) gain in fair value of investments, Net-of-Tax Amount	(21)	8
Unrealized loss in fair value of interest rate swap, Before-Tax Amount		(62)
Unrealized loss in fair value of interest rate swap, Tax (Expense) Benefit		27
Unrealized loss in fair value of interest rate swap, Net-of-Tax Amount		(35)
Total other comprehensive income, Before-Tax Amount	327	1,982
Total other comprehensive income, Tax (Expense) Benefit	(134)	(832)
Total other comprehensive income, net of tax	$ 193	$ 1,150

Other Comprehensive Income (L38

Other Comprehensive Income (Loss) (Schedule Of Changes In AOCI Balances By Component (After-Tax)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	$ 1,553,023
Total other comprehensive income, net of tax	193	$ 1,150
Balance at the end of the period	1,560,127
Defined Benefit Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(40,865)	(38,242)
Amounts reclassified from AOCI	268	247
Total other comprehensive income, net of tax	268	247
Balance at the end of the period	(40,597)	(37,995)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(4,864)	(4,603)
Other comprehensive gain (loss) before reclassifications	(54)	930
Total other comprehensive income, net of tax	(54)	930
Balance at the end of the period	(4,918)	(3,673)
Unrealized Gain (Loss) in Fair Value of Investments, net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	316	656
Other comprehensive gain (loss) before reclassifications	(21)	8
Total other comprehensive income, net of tax	(21)	8
Balance at the end of the period	295	664
Unrealized Gain (Loss) in Fair Value of Interest Rate Swap, net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period		24
Other comprehensive gain (loss) before reclassifications		(35)
Total other comprehensive income, net of tax		(35)
Balance at the end of the period		(11)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(45,413)	(42,165)
Other comprehensive gain (loss) before reclassifications	(75)	903
Amounts reclassified from AOCI	268	247
Total other comprehensive income, net of tax	193	1,150
Balance at the end of the period	$ (45,220)	$ (41,015)

Other Comprehensive Income (L39

Other Comprehensive Income (Loss) (Schedule Of Items Reclassified Out Of AOCI And The Corresponding Location And Impact On The Condensed Consolidated Statements Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	$ (8,106)	$ (11,324)
NET INCOME	13,764	15,400
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Defined benefit pension plan adjustments	455	427
Provision for income taxes	(187)	(180)
NET INCOME	$ 268	$ 247

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Taxes [Abstract]
Effective income tax rate	37.10%	42.40%

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Long-term Debt
Transfers between Levels 1 and 2, description	The Company did not have material transfers between Levels 1 and 2 during the three months ended March 31, 2017 or 2016.
Long-term debt, carrying amount	$ 780,789	$ 759,519
2010 Senior Notes [Member]
Long-term Debt
Long-term debt, fair value	304,000	302,600
Long-term debt, carrying amount	298,374	298,120
Convertible Notes [Member]
Long-term Debt
Long-term debt, fair value	249,200	228,400
Long-term debt, carrying amount	$ 154,832	$ 152,668

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Restricted cash	$ 60,158	$ 50,504
Fair Value Measured On A Recurring Basis [Member]
Assets:
Cash and cash equivalents	104,817	146,103
Restricted cash	60,158	50,504
Investments in lieu of retainage	53,852	51,266
Total assets	218,827	247,873
Fair Value Measured On A Recurring Basis [Member] | Quoted Prices In Active Markets (Level 1) [Member]
Assets:
Cash and cash equivalents	104,817	146,103
Restricted cash	60,158	50,504
Investments in lieu of retainage	50,317	46,855
Total assets	215,292	243,462
Fair Value Measured On A Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Investments in lieu of retainage	3,535	4,411
Total assets	$ 3,535	$ 4,411

Business Segments (Narrative) (

Business Segments (Narrative) (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)segment$ / shares	Mar. 31, 2016USD ($)contract$ / shares
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Income from construction operations	$ 37,017	$ 40,122
Net income	$ 13,764	$ 15,400
DILUTED EARNINGS PER COMMON SHARE (in dollars per share) | $ / shares	$ 0.27	$ 0.31
Depreciation and amortization	$ 20,996	$ 14,496
Tutor Perini Corporation [Member]
Segment Reporting Information [Line Items]
Income from construction operations	185	778
Net income	13,764	15,400
Depreciation and amortization	11,975	5,626
Building [Member]
Segment Reporting Information [Line Items]
Income from construction operations	5,242	12,450
Civil [Member]
Segment Reporting Information [Line Items]
Income from construction operations	31,888	33,665
Specialty Contractors [Member]
Segment Reporting Information [Line Items]
Income from construction operations	14,762	9,413
Corporate [Member]
Segment Reporting Information [Line Items]
Income from construction operations	$ (14,875)	(15,406)
Five Star Electric [Member] | Specialty Contractors [Member] | Scenario Favorable Adjustment [Member]
Segment Reporting Information [Line Items]
Income from construction operations		$ 3,000
DILUTED EARNINGS PER COMMON SHARE (in dollars per share) | $ / shares		$ 0.04
Five Star Electric Subcontract [Member]
Segment Reporting Information [Line Items]
Number of projects | contract		2
Five Star Electric Subcontract [Member] | Scenario Unfavorable Adjustment [Member]
Segment Reporting Information [Line Items]
Income from construction operations		$ 13,800
DILUTED EARNINGS PER COMMON SHARE (in dollars per share) | $ / shares		$ 0.17
Five Star Electric Subcontract [Member] | Scenario Favorable Adjustment [Member]
Segment Reporting Information [Line Items]
Income from construction operations		$ 14,000
DILUTED EARNINGS PER COMMON SHARE (in dollars per share) | $ / shares		$ 0.17

Business Segments (Reportable S

Business Segments (Reportable Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Segments [Line items]
Revenue	$ 1,117,361	$ 1,085,369
Income from construction operations	37,017	40,122
Other income, net	417	682
Capital expenditures	5,672	4,812
Depreciation and amortization	20,996	12,809
External And Intersegment Customers [Member]
Business Segments [Line items]
Revenue	1,169,055	1,137,268
Revenue From External Customer [Member]
Business Segments [Line items]
Revenue	1,117,361	1,085,369
Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(51,694)	(51,899)
Operating segment [Member]
Business Segments [Line items]
Revenue	1,169,055	1,137,268
Income from construction operations	51,892	55,528
Capital expenditures	5,618	4,458
Depreciation and amortization	18,028	9,945
Operating segment [Member] | Revenue From External Customer [Member]
Business Segments [Line items]
Revenue	1,117,361	1,085,369
Operating segment [Member] | Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(51,694)	(51,899)
Civil [Member]
Business Segments [Line items]
Revenue	338,108	367,501
Income from construction operations	31,888	33,665
Capital expenditures	5,567	3,612
Depreciation and amortization	16,318	8,083
Civil [Member] | Revenue From External Customer [Member]
Business Segments [Line items]
Revenue	304,575	335,858
Civil [Member] | Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(33,533)	(31,643)
Building [Member]
Business Segments [Line items]
Revenue	515,251	487,994
Income from construction operations	5,242	12,450
Capital expenditures	45	221
Depreciation and amortization	518	557
Building [Member] | Revenue From External Customer [Member]
Business Segments [Line items]
Revenue	497,090	467,738
Building [Member] | Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(18,161)	(20,256)
Specialty Contractors [Member]
Business Segments [Line items]
Revenue	315,696	281,773
Income from construction operations	14,762	9,413
Capital expenditures	6	625
Depreciation and amortization	1,192	1,305
Specialty Contractors [Member] | Revenue From External Customer [Member]
Business Segments [Line items]
Revenue	315,696	281,773
Corporate [Member]
Business Segments [Line items]
Income from construction operations	(14,875)	(15,406)
Capital expenditures	54	354
Depreciation and amortization	$ 2,968	$ 2,864

Business Segments (Reconciliati

Business Segments (Reconciliation of Segment Results to Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Segments [Abstract]
Income from construction operations	$ 37,017	$ 40,122
Other income, net	417	682
Interest expense	(15,564)	(14,080)
INCOME BEFORE INCOME TAXES	$ 21,870	$ 26,724

Business Segments (Schedule of

Business Segments (Schedule of Assets by Segment) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Reportable segment information
Total Assets	$ 3,998,483	$ 4,038,620
Civil [Member]
Reportable segment information
Total Assets	2,102,432	2,152,123
Building [Member]
Reportable segment information
Total Assets	896,442	917,317
Specialty Contractors [Member]
Reportable segment information
Total Assets	793,507	813,851
Corporate and Other [Member]
Reportable segment information
Total Assets	$ 206,102	$ 155,329

Employee Pension Plans (Details

Employee Pension Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Summary of net periodic benefit cost
Interest cost	$ 975	$ 1,053
Expected return on plan assets	(1,088)	(1,203)
Amortization (adjustment) of net loss	456	427
Other	213	150
Net periodic benefit cost	556	427
Company contribution	800	$ 300
Expected contributions remainder of current fiscal year	$ 1,800

Separate Financial Informatio48

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
REVENUE	$ 1,117,361	$ 1,085,369
COST OF OPERATIONS	(1,014,641)	(980,277)
GROSS PROFIT	102,720	105,092
General and administrative expenses	(65,703)	(64,970)
INCOME FROM CONSTRUCTION OPERATIONS	37,017	40,122
Other income (expense), net	417	682
Interest Expense	(15,564)	(14,080)
INCOME BEFORE INCOME TAXES	21,870	26,724
Benefit (Provision) for Income Taxes	(8,106)	(11,324)
NET INCOME	13,764	15,400
Other Comprehensive Income:
Defined benefit pension plan adjustments	268	247
Foreign currency translation adjustments	(54)	930
Change in fair value of investments	(21)	8
Change in fair value of interest rate swap		(35)
Total other comprehensive income, net of tax	193	1,150
TOTAL COMPREHENSIVE INCOME	13,957	16,550
Eliminations [Member]
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
REVENUE	(134,762)	(84,821)
COST OF OPERATIONS	134,762	84,821
Equity in Earnings of Subsidiaries	(23,529)	(23,079)
Other income (expense), net	(345)
Interest Expense	345
INCOME BEFORE INCOME TAXES	(23,529)	(23,079)
NET INCOME	(23,529)	(23,079)
Other Comprehensive Income:
Other Comprehensive Income of Subsidiaries	75	(938)
Total other comprehensive income, net of tax	75	(938)
TOTAL COMPREHENSIVE INCOME	(23,454)	(24,017)
Tutor Perini Corporation [Member]
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
REVENUE	246,011	176,725
COST OF OPERATIONS	(223,588)	(154,289)
GROSS PROFIT	22,423	22,436
General and administrative expenses	(22,238)	(21,658)
INCOME FROM CONSTRUCTION OPERATIONS	185	778
Equity in Earnings of Subsidiaries	23,529	23,079
Other income (expense), net	(252)	(621)
Interest Expense	(15,451)	(13,484)
INCOME BEFORE INCOME TAXES	8,011	9,752
Benefit (Provision) for Income Taxes	5,753	5,648
NET INCOME	13,764	15,400
Other Comprehensive Income:
Other Comprehensive Income of Subsidiaries	(75)	938
Defined benefit pension plan adjustments	268	247
Change in fair value of interest rate swap		(35)
Total other comprehensive income, net of tax	193	1,150
TOTAL COMPREHENSIVE INCOME	13,957	16,550
Guarantor Subsidiaries [Member]
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
REVENUE	999,356	986,361
COST OF OPERATIONS	(925,815)	(910,809)
GROSS PROFIT	73,541	75,552
General and administrative expenses	(42,998)	(42,837)
INCOME FROM CONSTRUCTION OPERATIONS	30,543	32,715
Other income (expense), net	707	1,060
Interest Expense	(458)	(596)
INCOME BEFORE INCOME TAXES	30,792	33,179
Benefit (Provision) for Income Taxes	(11,414)	(14,060)
NET INCOME	19,378	19,119
Other Comprehensive Income:
Foreign currency translation adjustments	(54)	930
Change in fair value of investments	(21)	8
Total other comprehensive income, net of tax	(75)	938
TOTAL COMPREHENSIVE INCOME	19,303	20,057
Non-Guarantor Subsidiaries [Member]
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
REVENUE	6,756	7,104
GROSS PROFIT	6,756	7,104
General and administrative expenses	(467)	(475)
INCOME FROM CONSTRUCTION OPERATIONS	6,289	6,629
Other income (expense), net	307	243
INCOME BEFORE INCOME TAXES	6,596	6,872
Benefit (Provision) for Income Taxes	(2,445)	(2,912)
NET INCOME	4,151	3,960
Other Comprehensive Income:
TOTAL COMPREHENSIVE INCOME	$ 4,151	$ 3,960

Separate Financial Informatio49

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Cash and Cash Equivalents	$ 104,817	$ 146,103	$ 90,582	$ 75,452
Restricted Cash	60,158	50,504
Accounts Receivable	1,749,602	1,743,300
Costs and Estimated Earnings in Excess of Billings	840,760	831,826
Other Current Assets	58,482	66,023
Total current assets	2,813,819	2,837,756
Property and Equipment, net	462,695	477,626
Other Assets:
GOODWILL	585,006	585,006
Intangible Assets, net	92,111	92,997
OTHER ASSETS	44,852	45,235
TOTAL ASSETS	3,998,483	4,038,620
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Maturities of Long-term Debt	27,598	85,890
Accounts Payable	965,931	994,016
Billings in Excess of Costs and Estimated Earnings	288,795	331,112
Accrued Expenses and Other Current Liabilities	112,448	107,925
Total current liabilities	1,394,772	1,518,943
Long-term Debt, less current maturities	753,191	673,629
Deferred Income Taxes	130,616	131,007
Other Long-term Liabilities	159,777	162,018
Contingencies and Commitments
Stockholders' Equity	1,560,127	1,553,023
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	3,998,483	4,038,620
Eliminations [Member]
ASSETS
Accounts Receivable	(213,670)	(231,519)
Costs and Estimated Earnings in Excess of Billings	(70,656)	(67,385)
Other Current Assets	(36,118)	(56,817)
Total current assets	(320,444)	(355,721)
Intercompany Notes and Receivables	(167,761)	(242,382)
Other Assets:
Investment in Subsidiaries	(2,188,874)	(2,223,971)
OTHER ASSETS	(8,467)	(8,401)
TOTAL ASSETS	(2,685,546)	(2,830,475)
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Maturities of Long-term Debt	(65,000)	(60,000)
Accounts Payable	(206,077)	(226,249)
Billings in Excess of Costs and Estimated Earnings	(12,590)	(20,571)
Accrued Expenses and Other Current Liabilities	(36,777)	(48,901)
Total current liabilities	(320,444)	(355,721)
Long-term Debt, less current maturities	(6,060)	(5,994)
Deferred Income Taxes	(2,407)	(2,407)
Intercompany Notes and Advances Payable	(167,761)	(242,382)
Contingencies and Commitments
Stockholders' Equity	(2,188,874)	(2,223,971)
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	(2,685,546)	(2,830,475)
Tutor Perini Corporation [Member]
ASSETS
Cash and Cash Equivalents	56,767	80,829	49,726	47,196
Restricted Cash	2,017	2,016
Accounts Receivable	435,844	426,176
Costs and Estimated Earnings in Excess of Billings	145,252	140,901
Other Current Assets	43,461	76,453
Total current assets	683,341	726,375
Property and Equipment, net	62,529	74,739
Other Assets:
Investment in Subsidiaries	2,188,874	2,223,971
OTHER ASSETS	41,930	42,324
TOTAL ASSETS	2,976,674	3,067,409
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Maturities of Long-term Debt	68,655	122,166
Accounts Payable	253,609	280,342
Billings in Excess of Costs and Estimated Earnings	94,701	102,373
Accrued Expenses and Other Current Liabilities	47,246	60,227
Total current liabilities	464,211	565,108
Long-term Debt, less current maturities	699,786	614,608
Deferred Income Taxes	16,083	16,475
Other Long-term Liabilities	106,621	111,108
Intercompany Notes and Advances Payable	129,846	207,087
Contingencies and Commitments
Stockholders' Equity	1,560,127	1,553,023
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	2,976,674	3,067,409
Guarantor Subsidiaries [Member]
ASSETS
Cash and Cash Equivalents	47,765	65,079	40,151	26,892
Restricted Cash	1,840	2,211
Accounts Receivable	1,432,775	1,441,263
Costs and Estimated Earnings in Excess of Billings	766,012	758,158
Other Current Assets	44,863	38,889
Total current assets	2,293,255	2,305,600
Property and Equipment, net	396,571	399,091
Intercompany Notes and Receivables	167,761	242,382
Other Assets:
GOODWILL	585,006	585,006
Intangible Assets, net	92,111	92,997
OTHER ASSETS	8,982	8,905
TOTAL ASSETS	3,543,686	3,633,981
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Maturities of Long-term Debt	23,943	23,724
Accounts Payable	913,456	937,428
Billings in Excess of Costs and Estimated Earnings	196,933	229,746
Accrued Expenses and Other Current Liabilities	86,668	76,002
Total current liabilities	1,221,000	1,266,900
Long-term Debt, less current maturities	59,465	65,015
Deferred Income Taxes	116,940	116,939
Other Long-term Liabilities	2,442	2,415
Contingencies and Commitments
Stockholders' Equity	2,143,839	2,182,712
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	3,543,686	3,633,981
Non-Guarantor Subsidiaries [Member]
ASSETS
Cash and Cash Equivalents	285	195	$ 705	$ 1,364
Restricted Cash	56,301	46,277
Accounts Receivable	94,653	107,380
Costs and Estimated Earnings in Excess of Billings	152	152
Other Current Assets	6,276	7,498
Total current assets	157,667	161,502
Property and Equipment, net	3,595	3,796
Other Assets:
OTHER ASSETS	2,407	2,407
TOTAL ASSETS	163,669	167,705
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts Payable	4,943	2,495
Billings in Excess of Costs and Estimated Earnings	9,751	19,564
Accrued Expenses and Other Current Liabilities	15,311	20,597
Total current liabilities	30,005	42,656
Other Long-term Liabilities	50,714	48,495
Intercompany Notes and Advances Payable	37,915	35,295
Contingencies and Commitments
Stockholders' Equity	45,035	41,259
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	$ 163,669	$ 167,705

Separate Financial Informatio50

Separate Financial Information of Subsidiary Guarantors of Indebtedness (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net income (loss)	$ 13,764	$ 15,400
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	20,996	14,496
Share-based compensation expense	4,306	3,647
Change in debt discounts and deferred debt issuance costs	3,836	1,687
Deferred income taxes	(526)	(155)
(Gain) loss on sale of property and equipment	(131)	285
Other long-term liabilities	(1,824)	(4,061)
Other non-cash items	267	1,399
Changes in other components of working capital	(73,533)	(15,067)
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(32,845)	15,944
Cash Flows from Investing Activities:
Acquisition of property and equipment excluding financed purchases	(5,672)	(4,812)
Proceeds from sale of property and equipment	259	939
Change in restricted cash	(9,654)	(3,305)
NET CASH USED IN INVESTING ACTIVITIES	(15,067)	(7,178)
Cash Flows from Financing Activities:
Proceeds from debt	313,977	299,785
Repayment of debt	(296,485)	(287,484)
Issuance of common stock and effect of cashless exercise	(10,809)
Debt issuance costs	(57)	(5,937)
NET CASH PROVIDED BY FINANCING ACTIVITIES	6,626	6,364
Net (decrease) increase in cash and cash equivalents	(41,286)	15,130
Cash and cash equivalents at beginning of period	146,103	75,452
Cash and cash equivalents at end of period	104,817	90,582
Eliminations [Member]
Cash Flows from Operating Activities:
Net income (loss)	(23,529)	(23,079)
Adjustments to reconcile net income to net cash from operating activities:
Equity in earnings of subsidiaries	23,529	23,079
Cash Flows from Investing Activities:
Increase (decrease) in intercompany advances	(74,626)	(24,653)
NET CASH USED IN INVESTING ACTIVITIES	(74,626)	(24,653)
Cash Flows from Financing Activities:
Increase (decrease) in intercompany advances	74,626	24,653
NET CASH PROVIDED BY FINANCING ACTIVITIES	74,626	24,653
Tutor Perini Corporation [Member]
Cash Flows from Operating Activities:
Net income (loss)	13,764	15,400
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	11,975	5,626
Equity in earnings of subsidiaries	(23,529)	(23,079)
Share-based compensation expense	3,956	3,647
Change in debt discounts and deferred debt issuance costs	50,636
Deferred income taxes	(614)	(153)
(Gain) loss on sale of property and equipment		202
Other long-term liabilities	(4,105)	(3,822)
Other non-cash items	461	(90)
Changes in other components of working capital	30,668	12,879
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	83,212	10,610
Cash Flows from Investing Activities:
Acquisition of property and equipment excluding financed purchases	(155)	(1,282)
Proceeds from sale of property and equipment		75
Change in restricted cash	(1)	109
NET CASH USED IN INVESTING ACTIVITIES	(156)	(1,098)
Cash Flows from Financing Activities:
Proceeds from debt	319,977	299,785
Repayment of debt	(292,087)	(276,202)
Issuance of common stock and effect of cashless exercise	(10,905)
Debt issuance costs	(46,857)	(5,937)
Increase (decrease) in intercompany advances	(77,246)	(24,628)
NET CASH PROVIDED BY FINANCING ACTIVITIES	(107,118)	(6,982)
Net (decrease) increase in cash and cash equivalents	(24,062)	2,530
Cash and cash equivalents at beginning of period	80,829	47,196
Cash and cash equivalents at end of period	56,767	49,726
Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Net income (loss)	19,378	19,119
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	8,820	8,800
Share-based compensation expense	350
Change in debt discounts and deferred debt issuance costs	(46,800)
Deferred income taxes	88	(2)
(Gain) loss on sale of property and equipment	(131)	83
Other long-term liabilities	62	(954)
Other non-cash items	(194)	1,489
Changes in other components of working capital	(105,124)	(25,578)
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(123,551)	2,957
Cash Flows from Investing Activities:
Acquisition of property and equipment excluding financed purchases	(5,517)	(3,530)
Proceeds from sale of property and equipment	259	864
Increase (decrease) in intercompany advances	74,626	24,653
Change in restricted cash	371	(403)
NET CASH USED IN INVESTING ACTIVITIES	69,739	21,584
Cash Flows from Financing Activities:
Proceeds from debt	(6,000)
Repayment of debt	(4,398)	(11,282)
Issuance of common stock and effect of cashless exercise	96
Debt issuance costs	46,800
NET CASH PROVIDED BY FINANCING ACTIVITIES	36,498	(11,282)
Net (decrease) increase in cash and cash equivalents	(17,314)	13,259
Cash and cash equivalents at beginning of period	65,079	26,892
Cash and cash equivalents at end of period	47,765	40,151
Non-Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Net income (loss)	4,151	3,960
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	201	70
Other long-term liabilities	2,219	715
Changes in other components of working capital	923	(2,368)
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	7,494	2,377
Cash Flows from Investing Activities:
Change in restricted cash	(10,024)	(3,011)
NET CASH USED IN INVESTING ACTIVITIES	(10,024)	(3,011)
Cash Flows from Financing Activities:
Increase (decrease) in intercompany advances	2,620	(25)
NET CASH PROVIDED BY FINANCING ACTIVITIES	2,620	(25)
Net (decrease) increase in cash and cash equivalents	90	(659)
Cash and cash equivalents at beginning of period	195	1,364
Cash and cash equivalents at end of period	$ 285	$ 705