Tutor Perini (TPC) 10-Q 8 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 01, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	Tutor Perini Corporation
Entity Central Index Key	0000077543
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Incorporation State Country Code	MASSACHUSETTS
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		50,278,816
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Security 12b Title	Common Stock, $1.00 par value
Trading Symbol	TPC
Security Exchange Name	NYSE
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Address, Address Line One	15901 OLDEN STREET
Entity Address, City or Town	SYLMAR
Entity Address, State or Province	CALIFORNIA
Entity Address, Postal Zip Code	91342-1093
Entity File Number	1-6314
Entity Tax Identification Number	041717070
City Area Code	818
Local Phone Number	362-8391

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
REVENUE	$ 1,125,275	$ 1,120,085	$ 2,083,762	$ 2,148,241
COST OF OPERATIONS	(1,024,332)	(1,001,445)	(1,894,349)	(1,962,533)
GROSS PROFIT	100,943	118,640	189,413	185,708
General and administrative expenses	(62,797)	(63,825)	(128,354)	(131,818)
Goodwill impairment	(379,863)	0	(379,863)	0
INCOME (LOSS) FROM CONSTRUCTION OPERATIONS	(341,717)	54,815	(318,804)	53,890
Other income, net	900	1,050	1,322	1,830
Interest expense	(17,522)	(15,998)	(33,947)	(31,063)
INCOME (LOSS) BEFORE INCOME TAXES	(358,339)	39,867	(351,429)	24,657
Income tax benefit (expense)	42,900	(11,971)	40,712	(7,703)
NET INCOME (LOSS)	(315,439)	27,896	(310,717)	16,954
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	5,091	3,013	10,169	4,195
NET INCOME (LOSS) ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ (320,530)	$ 24,883	$ (320,886)	$ 12,759
BASIC EARNINGS (LOSS) PER COMMON SHARE	$ (6.38)	$ 0.50	$ (6.40)	$ 0.26
DILUTED EARNGINS (LOSS) PER COMMON SHARE	$ (6.38)	$ 0.49	$ (6.40)	$ 0.25
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	50,224	49,946	50,161	49,880
DILUTED (in shares)	50,224	50,440	50,161	50,127

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
NET INCOME (LOSS)	$ (315,439)	$ 27,896	$ (310,717)	$ 16,954
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Defined benefit pension plan adjustments	331	354	661	735
Foreign currency translation adjustments	810	(634)	1,158	(1,808)
Unrealized gain (loss) in fair value of investments	686	(929)	1,359	(1,014)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	1,827	(1,209)	3,178	(2,087)
COMPREHENSIVE INCOME (LOSS)	(313,612)	26,687	(307,539)	14,867
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	5,248	3,013	10,428	4,195
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ (318,860)	$ 23,674	$ (317,967)	$ 10,672

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents ($60,562 and $43,131 related to variable interest entities ("VIEs"))	$ 149,881	$ 116,075
Restricted cash	4,742	3,788
Restricted investments	65,287	58,142
Accounts receivable ($94,807 and $62,482 related to VIEs)	1,469,213	1,261,072
Retainage receivable ($56,012 and $36,724 related to VIEs)	508,423	478,744
Costs and estimated earnings in excess of billings	1,165,408	1,142,295
Other current assets ($35,051 and $30,185 related to VIEs)	165,688	115,527
Total current assets	3,528,642	3,175,643
PROPERTY AND EQUIPMENT ("P&E"), net of accumulated depreciation of $362,350 and $343,735 (net P&E of $53,818 and $51,508 related to VIEs)	502,675	490,669
GOODWILL	205,143	585,006
INTANGIBLE ASSETS, NET	84,140	85,911
OTHER ASSETS	92,896	50,523
TOTAL ASSETS	4,413,496	4,387,752
CURRENT LIABILITIES:
Current maturities of long-term debt	14,414	16,767
Accounts payable ($36,524 and $18,070 related to VIEs)	685,745	621,728
Retainage payable	227,884	211,956
Billings in excess of costs and estimated earnings ($282,130 and $263,764 related to VIEs)	635,924	573,190
Accrued expenses and other current liabilities ($42,109 and $34,828 related to VIEs)	175,525	174,325
Total current liabilities	1,739,492	1,597,966
LONG-TERM DEBT, less current maturities, net of unamortized discounts and debt issuance costs totaling $29,305 and $34,998	941,763	744,737
DEFERRED INCOME TAXES	56,248	105,521
OTHER LONG-TERM LIABILITIES	186,434	151,639
TOTAL LIABILITIES	2,923,937	2,599,863
COMMITMENTS AND CONTINGENCIES (NOTE 11)
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 50,278,816 and 50,025,996 shares	50,279	50,026
Additional paid-in capital	1,110,496	1,102,919
Retained earnings	380,795	701,681
Accumulated other comprehensive loss	(42,530)	(45,449)
Total stockholders' equity	1,499,040	1,809,177
Noncontrolling interests	(9,481)	(21,288)
TOTAL EQUITY	1,489,559	1,787,889
TOTAL LIABILITIES AND EQUITY	$ 4,413,496	$ 4,387,752

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 149,881	$ 116,075
Accounts receivable	1,469,213	1,261,072
Retainage receivable	508,423	478,744
Other current assets	165,688	115,527
Accumulated depreciation	362,350	343,735
PROPERTY AND EQUIPMENT, net of accumulated depreciation	502,675	490,669
Accounts payable	685,745	621,728
Accrued expenses and other current liabilities	175,525	174,325
Billings in excess of costs and estimated earnings	635,924	573,190
Unamortized discounts and debt issuance costs	$ 29,305	$ 34,998
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	50,278,816	50,025,996
Common stock, shares outstanding	50,278,816	50,025,996
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents	$ 60,562	$ 43,131
Accounts receivable	94,807	62,482
Retainage receivable	56,012	36,724
Other current assets	35,051	30,185
PROPERTY AND EQUIPMENT, net of accumulated depreciation	53,818	51,508
Accounts payable	36,524	18,070
Accrued expenses and other current liabilities	42,109	34,828
Billings in excess of costs and estimated earnings	$ 282,130	$ 263,764

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities:
Net income (loss)	$ (310,717)	$ 16,954
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Goodwill impairment	379,863	0
Depreciation	26,543	19,393
Amortization of intangible assets	1,771	1,771
Share-based compensation expense	10,078	12,063
Change in debt discounts and deferred debt issuance costs	6,442	5,914
Deferred income taxes	(50,321)	116
(Gain) loss on sale of property and equipment	(1,479)	1,474
Changes in other components of working capital	(177,471)	(113,887)
Other long-term liabilities	3,209	(5,276)
Other,net	596	(902)
NET CASH USED IN OPERATING ACTIVITIES	(111,486)	(62,380)
Cash Flows from Investing Activities:
Acquisition of property and equipment	(39,346)	(48,303)
Proceeds from sale of property and equipment	3,629	4,120
Investment in securities	(13,660)	(8,549)
Proceeds from maturities and sales of investments in securities	8,131	7,982
NET CASH USED IN INVESTING ACTIVITIES	(41,246)	(44,750)
Cash Flows from Financing Activities:
Proceeds from debt	716,139	1,246,677
Repayment of debt	(527,159)	(1,165,283)
Business acquisition related payment	0	(15,951)
Cash payments related to share-based compensation	(2,363)	(2,458)
Distributions paid to noncontrolling interests	(4,000)	(12,500)
Contributions from noncontrolling interests	5,379	1,000
Debt modification costs	(504)	0
NET CASH PROVIDED BY FINANCING ACTIVITIES	187,492	51,485
Net increase (decrease) in cash, cash equivalents and restricted cash	34,760	(55,645)
Cash, cash equivalents and restricted cash at beginning of period	119,863	197,648
Cash, cash equivalents and restricted cash at end of period	$ 154,623	$ 142,003

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2019
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 generally accepted accounting principles in the United States (“GAAP”). Therefore, they should be read in conjunction with the audited consolidated financial statements and the related notes included in Tutor Perini Corporation’s (the “Company”) Annual Report on Form 10-K for the year ended December 31, 2018. The results of operations for the three and six months ended June 30, 2019 may not be indicative of the results that will be achieved for the full year ending December 31, 2019 . 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 June 30, 2019 and its consolidated statements of operations and cash flows for the interim periods presented. Intercompany balances and transactions have been eliminated.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	(2) Recent Accounting Pronouncements New accounting pronouncements adopted by the Company during the six months ended June 30, 2019 are discussed below. In August 2018, the Securities and Exchange Commission (“SEC”) adopted the final rule under SEC Release No. 33-10532, “Disclosure Update and Simplification,” adopting amendments to certain disclosure rules that were redundant, duplicative, overlapping, outdated, or superseded, in light of other SEC disclosure requirements, GAAP or changes in the information environment. The amendments expanded the disclosure requirements relating to the analysis of equity for interim financial statements. Under the amendments, an analysis of the changes in each caption of stockholders’ equity and noncontrolling interests presented in the balance sheet must be provided in a note or separate statement. The analysis must present a reconciliation of the beginning balance to the ending balance of each period for which a statement of earnings is required to be filed. The final rule was effective on November 5, 2018. The Company adopted the final rule effective for the first quarter of 2019. The adoption of the final rule did not have an impact on the Company’s consolidated financial position or results of operations. See Note 16, Changes in Equity , for the new required disclosures. In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) 2016-02, Leases (Topic 842), as amended and supplemented by subsequent ASUs (collectively, “ASC 842”). ASC 842 amends the existing guidance in Accounting Standards Codification (“ASC”) 840, Leases . This ASU requires, among other things, the recognition of lease right-of-use (“ROU”) assets and lease liabilities by lessees for those leases currently classified as operating leases. ASC 842 allowed companies to adopt the new standard by applying either a modified retrospective method to the beginning of the earliest period presented in the financial statements or an optional transition method to initially apply the standard on January 1, 2019 and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company adopted the standard using the optional transition method. Under this method, financial results reported in periods prior to 2019 are unchanged. The Company elected the package of practical expedients which provides relief from having to reassess (1) whether any expired or existing contracts contain leases, (2) lease classification (as operating or financing) for any expired or existing leases, and (3) initial direct costs for any existing leases. The Company also elected to separate non-lease components from lease components. Based on the Company’s evaluation of ASC 842, the adoption on January 1, 2019 resulted in an increase of $ 43.3 million to its assets and liabilities on the Condensed Consolidated Balance Sheets with no impact to its results of operations or cash flows . The effects of the changes made to the Company’s January 1, 2019 consolidated balance sheet for the adoption of ASC 842 were as follows: BALANCE SHEET Balance as of Adjustments due to Balance as of (in thousands) December 31, 2018 (a) ASC 842 January 1, 2019 ASSETS Other assets (b) $ 50,523 $ 43,273 $ 93,796 LIABILITIES Accrued expenses and other current liabilities (b) $ 174,325 $ 11,569 $ 185,894 Other long-term liabilities (b) 151,639 31,704 183,343 (a) Balance as previously reported on the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. (b) Prior to the adoption of ASC 842, operating lease ROU assets and current and long-term operating lease liabilities were not recorded on the Condensed Consolidated Balance Sheets. The following table presents the impacts of adoption of the new leases standard on the Condensed Consolidated Balance Sheet: As of June 30, 2019 Balance Without BALANCE SHEET Adoption of Effect of (in thousands) As Reported ASC 842 Change ASSETS Other assets (a) $ 92,896 $ 50,001 $ 42,895 LIABILITIES Accrued expenses and other current liabilities (a) $ 175,525 $ 163,718 $ 11,807 Other long-term liabilities (a) 186,434 155,346 31,088 (a) Prior to the adoption of ASC 842, operating lease ROU assets and current and long-term operating lease liabilities were not recorded on the Condensed Consolidated Balance Sheets. For the three and six months ended June 30, 2019, the new requirements of ASC 842 did not have an impact on the Company’s results of operations or cash flows .

Revenue

Revenue	6 Months Ended
	Jun. 30, 2019
Revenue [Abstract]
Revenue	(3) Revenue Disaggregation of Revenue The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depict how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the three and six months ended June 30, 2019 and 2018. Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Civil segment revenue by end market: Mass transit $ 243,620 $ 158,096 $ 389,870 $ 308,222 Bridges 86,467 120,929 155,774 183,739 Highways 60,244 65,809 101,287 83,066 Tunneling 29,586 23,931 64,526 32,632 Other 53,741 33,708 95,695 57,928 Total Civil segment revenue $ 473,658 $ 402,473 $ 807,152 $ 665,587 Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Building segment revenue by end market: Commercial and industrial facilities $ 118,564 $ 59,318 $ 227,917 $ 233,066 Health care facilities 60,796 118,116 141,023 193,197 Municipal and government 68,580 70,528 130,542 120,981 Education facilities 47,062 32,876 89,590 65,358 Hospitality and gaming 35,939 79,490 83,896 161,255 Mass transit 41,211 13,171 70,388 13,171 Mixed use 23,582 38,814 60,209 80,590 Other 32,584 34,666 58,219 69,602 Total Building segment revenue $ 428,318 $ 446,979 $ 861,784 $ 937,220 Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Specialty Contractors segment revenue by end market: Mass transit $ 100,016 $ 78,169 $ 181,411 $ 153,351 Commercial and industrial facilities 43,618 48,952 87,641 88,291 Multi-unit residential 19,225 22,761 30,614 45,850 Mixed use 18,036 51,976 28,705 99,833 Education facilities 14,036 26,298 25,616 51,602 Health care facilities 9,248 14,623 20,899 30,988 Transportation 3,726 22,019 10,161 56,004 Other 15,394 5,835 29,779 19,515 Total Specialty Contractors segment revenue $ 223,299 $ 270,633 $ 414,826 $ 545,434 Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by customer type: State and local agencies $ 381,438 $ 133,798 $ 114,255 $ 629,491 $ 327,195 $ 159,556 $ 106,308 $ 593,059 Private owners 65,241 250,124 106,283 421,648 44,506 235,160 149,337 429,003 Federal agencies 26,979 44,396 2,761 74,136 30,772 52,263 14,988 98,023 Total revenue $ 473,658 $ 428,318 $ 223,299 $ 1,125,275 $ 402,473 $ 446,979 $ 270,633 $ 1,120,085 Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by customer type: State and local agencies $ 638,545 $ 278,484 $ 211,326 $ 1,128,355 $ 553,546 $ 275,541 $ 212,628 $ 1,041,715 Private owners 118,470 498,753 192,970 810,193 71,414 565,105 299,094 935,613 Federal agencies 50,137 84,547 10,530 145,214 40,627 96,574 33,712 170,913 Total revenue $ 807,152 $ 861,784 $ 414,826 $ 2,083,762 $ 665,587 $ 937,220 $ 545,434 $ 2,148,241 Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by contract type: Fixed price $ 349,945 $ 136,250 $ 187,826 $ 674,021 $ 259,927 $ 96,657 $ 234,495 $ 591,079 Guaranteed maximum price 1,644 185,050 7,315 194,009 3,103 270,440 17,462 291,005 Unit price 116,285 2,800 20,183 139,268 121,447 10,771 7,233 139,451 Cost plus fee and other 5,784 104,218 7,975 117,977 17,996 69,111 11,443 98,550 Total revenue $ 473,658 $ 428,318 $ 223,299 $ 1,125,275 $ 402,473 $ 446,979 $ 270,633 $ 1,120,085 Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by contract type: Fixed price $ 592,811 $ 250,609 $ 343,090 $ 1,186,510 $ 443,830 $ 175,658 $ 481,919 $ 1,101,407 Guaranteed maximum price 3,878 392,182 10,921 406,981 8,175 532,468 33,042 573,685 Unit price 201,163 8,028 39,186 248,377 190,201 19,588 13,890 223,679 Cost plus fee and other 9,300 210,965 21,629 241,894 23,381 209,506 16,583 249,470 Total revenue $ 807,152 $ 861,784 $ 414,826 $ 2,083,762 $ 665,587 $ 937,220 $ 545,434 $ 2,148,241 Changes in Contract Estimates that Impact Revenue Changes to the total estimated contract revenue or cost for a given project, either due to unexpected events or revisions to management’s initial estimates, are recognized in the period in which they are determined. Net revenue was negatively impacted during the three- and six-month periods ended June 30, 2019 related to performance obligations satisfied (or partially satisfied) in prior periods by $ 14.6 million and $ 27.7 million, respectively. Net revenue recognized during the three and six months ended June 30, 2018 related to performance obligations satisfied (or partially satisfied) in prior periods was immaterial. Remaining Performance Obligations Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. As of June 30, 2019, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $ 5.5 billion, $ 1.7 billion and $ 2.2 billion for the Civil, Building and Specialty Contractors segments, respectively. As of June 30, 2018, the aggregate amounts of the transaction prices allocated to the remaining performance obligations of the Company’s construction contracts were $ 4.3 billion, $ 2.0 billion and $ 1.6 billion for the Civil, Building and Specialty Contractors segments, respectively. The Company typically recognizes revenue on Civil segment projects over a period of three to five years , whereas for projects in the Building and Specialty Contractors segments, the Company typically recognizes revenue over a period of one to three years .

Contract Assets And Liabilities

Contract Assets And Liabilities	6 Months Ended
	Jun. 30, 2019
Contract Assets and Liabilities [Abstract]
Contract Assets And Liabilities	(4) Contract Assets and Liabilities The Company classifies contract assets and liabilities that may be settled beyond one year from the balance sheet date as current, consistent with the length of time of the Company’s project operating cycle. Contract assets include amounts due under retainage provisions, costs and estimated earnings in excess of billings and capitalized contract costs. The amounts as included on the Condensed Consolidated Balance Sheets consisted of the following: As of June 30, As of December 31, (in thousands) 2019 2018 Retainage receivable $ 508,423 $ 478,744 Costs and estimated earnings in excess of billings: Claims 752,712 698,274 Unapproved change orders 334,774 354,000 Other unbilled costs and profits 77,922 90,021 Total costs and estimated earnings in excess of billings 1,165,408 1,142,295 Capitalized contract costs 61,376 37,404 Total contract assets $ 1,735,207 $ 1,658,443 Retainage receivable represents amounts invoiced to customers where payments have been partially withheld pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retainage agreements vary from project to project and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress towards completion. Costs and estimated earnings in excess of billings represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Costs and estimated earnings in excess of billings result when either: 1) the appropriate contract revenue amount has been recognized over time in accordance with ASC 606, Revenue from Contracts with Customers (“ASC 606”) , but a portion of the revenue recorded cannot be billed currently due to the billing terms defined in the contract, or 2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. 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; decreases normally result from resolutions and subsequent billings. As discussed in Note 11, Commitments and Contingencies , the resolution of these claims and unapproved change orders may require litigation or other forms of dispute resolution proceedings. 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 incremental progress toward contractual requirements or milestones. Capitalized contract costs primarily represent costs to fulfill a contract that (1) directly relate to an existing or anticipated contract, (2) generate or enhance resources that will be used in satisfying performance obligations in the future and (3) are expected to be recovered through the contract, and are included in other current assets. Capitalized contract costs are generally expensed to the associated contract over the period of anticipated use on the project. During the three and six months ended June 30, 2019, $ 8.6 million and $ 14.3 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts. During the three and six months ended June 30, 2018, $ 4.1 million and $ 8.2 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts. Contract liabilities include amounts owed under retainage provisions and billings in excess of costs and estimated earnings. The amount as reported on the Condensed Consolidated Balance Sheets consisted of the following: As of June 30, As of December 31, (in thousands) 2019 2018 Retainage payable $ 227,884 $ 211,956 Billings in excess of costs and estimated earnings 635,924 573,190 Total contract liabilities $ 863,808 $ 785,146 Retainage payable represents amounts invoiced to the Company by subcontractors where payments have been partially withheld pending the completion of certain milestones, other contractual conditions or upon the completion of the project. Generally, retainage payable is not remitted to subcontractors until the associated retainage receivable from customers is collected. Billings in excess of costs and estimated earnings represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue. Revenue recognized during the three and six months ended June 30, 2019 and included in the opening billings in excess of costs and estimated earnings balances for each period totaled $ 289.4 million and $ 391.9 million, respectively. Revenue recognized during the three and six months ended June 30, 2018 and included in the opening billings in excess of costs and estimated earnings balances for each period totaled $ 262.3 million and $ 303.4 million, respectively.

Cash, Cash Equivalents And Rest

Cash, Cash Equivalents And Restricted Cash	6 Months Ended
	Jun. 30, 2019
Cash, Cash Equivalents and Restricted Cash [Abstract]
Cash, Cash Equivalents and Restricted Cash	(5) Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Condensed Consolidated Balance Sheets to the amounts shown in the Condensed Consolidated Statements of Cash Flows: As of June 30, As of December 31, (in thousands) 2019 2018 Cash and cash equivalents available for general corporate purposes $ 64,668 $ 51,749 Joint venture cash and cash equivalents 85,213 64,326 Cash and cash equivalents 149,881 116,075 Restricted cash 4,742 3,788 Total cash, cash equivalents and restricted cash $ 154,623 $ 119,863 Cash equivalents include short-term, highly liquid investments with maturities of three months or less when acquired. Cash and cash equivalents consist of amounts available for the Company’s general purposes, the Company’s proportionate share of cash held by the Company’s unconsolidated joint ventures and 100% of amounts held by the Company’s consolidated joint ventures. In both cases, cash held by joint ventures is available only for joint venture-related uses, including future distributions to joint venture partners. Amounts included in restricted cash are primarily held as collateral to secure insurance-related contingent obligations, such as insurance claim deductibles, in lieu of letters of credit.

Earnings Per Common Share (EPS)

Earnings Per Common Share (EPS)	6 Months Ended
	Jun. 30, 2019
Earnings Per Common Share (EPS) [Abstract]
Earnings Per Common Share (EPS)	(6) Earnings Per Common Share (EPS) Basic EPS and diluted EPS are calculated by dividing net income attributable to Tutor Perini Corporation 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, which for the Company can include restricted stock units, unexercised stock options and the Convertible Notes, as defined in Note 9, Financial Commitments . In accordance with ASC 260, Earnings Per Share (“ASC 260”) , the settlement of the principal amount of the Convertible Notes has no impact on diluted EPS because the Company has the intent and ability to settle the principal amount in cash . The Company calculates the effect of the potentially dilutive restricted stock units and stock options using the treasury stock method. Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per common share data) 2019 2018 2019 2018 Net income (loss) attributable to Tutor Perini Corporation $ ( 320,530 ) $ 24,883 $ ( 320,886 ) $ 12,759 Weighted-average common shares outstanding, basic 50,224 49,946 50,161 49,880 Effect of dilutive restricted stock units and stock options — 494 — 247 Weighted-average common shares outstanding, diluted 50,224 50,440 50,161 50,127 Net income (loss) attributable to Tutor Perini Corporation per common share: Basic $ ( 6.38 ) $ 0.50 $ ( 6.40 ) $ 0.26 Diluted $ ( 6.38 ) $ 0.49 $ ( 6.40 ) $ 0.25 Anti-dilutive securities not included above 4,191 1,682 4,354 3,095 The net loss attributable to Tutor Perini Corporation per common share for the three and six months ended June 30, 2019 in the table above reflects the impact of the $ 379.9 million goodwill impairment charge discussed in Note 8, Goodwill and Intangible Assets , an after-tax impact of $ 329.5 million, or $ 6.56 and $ 6.57 per diluted share for the three and six months ended June 30, 2019, respectively . All restricted stock units and stock options that were outstanding during the three and six months ended June 30, 2019 were excluded from weighted-average diluted shares outstanding for the periods, as the shares would have a dilutive effect on the net losses. Since the Company has the intent and ability to settle the principal amount of the Convertible Notes in cash, per ASC 260, the settlement of the principal amount was excluded from the calculation of diluted EPS.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Taxes [Abstract]
Income Taxes	(7) Income Taxes The Company’s effective income tax rate was 12.0 % and 11.6 % for the three and six months ended June 30, 2019, respectively, and 30.0 % and 31.2 % for the three and six months ended June 30, 2018. The Company’s provision for income taxes and effective tax rates for the three and six months ended June 30, 2019 were significantly impacted by the goodwill impairment charge discussed in Note 8, Goodwill and Intangible Assets . Of the total goodwill impairment charge of $ 379.9 million, approximately $ 209.5 million pertained to goodwill that is not tax deductible and yielded permanent differences between book income and taxable income. For the three and six months ended June 30, 2019, the Company recognized a tax benefit totaling $ 50.4 million as a result of the impairment charge. Additionally, approximately $ 50.4 million was recorded as a deferred tax asset or a reduction of a previously recorded deferred tax liability due to the impairment charge. The adjusted effective income tax rates, which exclude the tax benefit resulting from the goodwill impairment charge, were 34.7 % and 34.0 % for the three and six months ended June 30, 2019, respectively, and primarily reflect the unfavorable impact of expired stock options for which the share-based compensation expense recognized in prior periods will not be deductible for income taxes. For the three and six months ended June 30, 2019 and 2018, the effective tax rates were higher than the federal statutory rates also as a result of state income taxes, with the increases partially offset by earnings attributable to noncontrolling interests for which income taxes are not the responsibility of the Company.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2019
Goodwill and Intangible Assets [Abstract]
Goodwill and Intangible Assets	(8) Goodwill and Intangible Assets Goodwill The following table presents the changes in the carrying amount of goodwill since its inception through June 30, 2019: Specialty (in thousands) Civil Building Contractors Total Gross goodwill $ 492,074 $ 424,724 $ 156,193 $ 1,072,991 Accumulated impairment ( 76,716 ) ( 411,269 ) — ( 487,985 ) Balance as of December 31, 2018 415,358 13,455 156,193 585,006 Second quarter 2019 impairment ( 210,215 ) ( 13,455 ) ( 156,193 ) ( 379,863 ) Balance as of June 30, 2019 (a) $ 205,143 $ — $ — $ 205,143 (a) As of June 30, 2019, accumulated impairment was $ 867.8 million. The aggregate carrying amount of goodwill allocated to the Company’s three reporting units as of December 31, 2018 was $ 585.0 million. The Company tests the goodwill allocated to its reporting units for impairment annually on October 1, or more frequently if events or circumstances indicate it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The Company performed its 2018 annual impairment test as of October 1, 2018 using a weighted average of (1) an income approach and (2) a market approach to determine the fair value of each reporting unit and concluded that the goodwill was not impaired since the estimated fair value of each reporting unit exceeded its respective net book value. In addition, the Company determined the implied control premium (the excess of the aggregated fair values of its reporting units over its market capitalization) was consistent with and within a reasonable range of actual premiums paid in industry-specific merger and acquisition (“M&A”) transactions over a sustained period of time. During the interim periods since the date of the last annual test, and prior to the second quarter of 2019, the Company concluded that no triggering events had occurred. In the second quarter of 2019, in connection with the preparation of its quarterly financial statements, the Company assessed the changes in circumstances that occurred during the quarter to determine whether it was more likely than not that the fair values of any of its reporting units were below their carrying amounts. While there was no single determinative event or factor, potential triggering events identified in the accounting guidance (ASC 350, Intangibles – Goodwill and Other ) developed during the second quarter of 2019, which led the Company to conclude that, when considering the events and factors in totality, it was more likely than not that the fair values of each of its reporting units were below their carrying amounts. The triggering factors included:  The Company faced a declining stock price and observed a sustained decrease subsequent to the filing of the Company’s first quarter Form 10-Q on May 8, 2019, in both absolute terms and relative to its peers. Consistent with the average stock prices of companies in its peer group, the Company’s stock price had been trending lower over several prior periods; however, during the second quarter of 2019, the Company’s stock price dropped to a 52-week low while the average stock price of companies in its peer group increased. The Company believes that delays experienced in resolving certain claims and unapproved change orders, which when combined with the increased working capital needs and significant negative operating cash flows in the first quarter of 2019, has contributed significantly to the sustained decrease in the Company’s stock price;  The Company experienced significant negative operating cash flows from each of its reporting units in the first quarter of 2019, and that trend continued at the beginning of the second quarter; and  The Company’s debt rating was downgraded by a major credit rating agency on May 17, 2019. As the Company determined that it was more likely than not that the fair values of its reporting units were below their carrying amounts, the Company performed an interim impairment test as of June 1, 2019 (the “Interim Test”) and, as described below, recognized a non-cash impairment loss totaling $ 379.9 million. The decrease in the Company’s stock price reduced its total market capitalization and increased the implied control premium to a level beyond observable market-comparable data. As a result, when performing the Interim Test, the Company increased the discount rates and the projected investments in working capital compared to the assumptions used in the previous October 1 test, which extended the timing of certain expected future cash flows in the calculation of fair value under the income-based approach. The Company believes these are changes reflective of market participant inputs and the recent decrease in the Company’s market valuation. Consistent with the previous October 1, 2018 test, the Company utilized a weighted average of (1) an income approach and (2) a market approach to determine the fair value of the Company and each of its reporting units for the Interim Test. The income approach is based on estimated present value of future cash flows for each reporting unit. The market approach is based on assumptions about how market data relates to each reporting unit. The weighting of these two approaches is based on their individual correlation to the economics of each reporting unit and is impacted by factors such as the availability of comparable market data for each reporting unit. Assessing impairment inherently involves management judgments as to the assumptions used to calculate fair value of the reporting units and the impact of market conditions on those assumptions. The key inputs that the Company uses in its assumptions to estimate the fair value of its reporting units under the income-based approach are as follows:  Weighted average cost of capital (“WACC”), the risk-adjusted rate used to discount the projected cash flows;  Cash flows generated from existing work and new awards; and  Projected operating margins. Expected future after-tax operating cash flows of each reporting unit are discounted to a present value using a risk-adjusted discount rate. Estimates of future cash flows require management to make significant assumptions concerning future operating performance including cash flows generated from existing work and new awards, projected operating margins, variations in the amount and timing of cash flows and the probability of achieving the estimated cash flows, as well as future economic conditions, which may differ from actual future cash flows. The discount rate, which is intended to reflect the risks inherent in future cash flow projections, used in estimating the present value of future cash flows, is based on estimates of the WACC of market participants relative to the reporting units. Financial and credit market volatility can directly impact certain inputs and assumptions used to develop the WACC. To develop the cash flows generated from new awards and future operating margins, the Company tracks known prospects of significance for each of its reporting units and considers the estimated timing of when the work is expected to be bid, started and completed. The Company also gives consideration to its relationships with the prospective owners; the pool of competitors that are capable of performing large, complex work; business strategy; and the Company’s history of success in winning new work in each reporting unit. With regard to operating margins, the Company gives consideration to its historical reporting unit operating margins in the end markets that the prospective work opportunities are most significant, expected margins from existing work, current market trends in recent new work procurement, and business strategy. The Company also estimated the fair value of its reporting units under a market-based approach by applying industry-comparable multiples of revenues and operating earnings to its reporting units’ revenues and operating earnings. The conditions and prospects of companies in the engineering and construction industry depend on common factors such as overall demand for services. The Company believes that the discount rates, timing of cash flows and other inputs and assumptions used in the Interim Test are consistent with those that a market participant would use based on the events described above which occurred during the second quarter of 2019 and are reflective of the current market assessment of the fair value of its reporting units. In addition, the Company believes that its estimates and assumptions about future revenues and margin projections in the Interim Test were reasonable and consistent with the estimates and assumptions used in the annual goodwill impairment test as of October 1, 2018. As an additional step to corroborate the Interim Test results, the Company compared its implied control premium with those of recent comparable market transactions and concluded that the implied control premium was within the range of control premiums observed in prior industry-specific M&A transactions. Similar to previous valuations, the Company noted that small changes to valuation assumptions could have a significant impact on the concluded value. The assumption changes described above were relatively larger in the Specialty Contractors reporting unit than in the Civil or Building reporting units, as Specialty Contractors has not met recent market expectations. As of June 30, 2019, the carrying value of the Civil reporting unit approximates its fair value. As such, there is a risk of additional goodwill impairment if future events related to the Civil reporting unit are less favorable than what the Company assumed or estimated in its Interim Test. The Company will continue to monitor events occurring or circumstances changing which may suggest that goodwill should be reevaluated during interim periods prior to the annual impairment test. These events and circumstances include, but are not limited to, a sustained decline in our stock price and market capitalization, as well as quantitative and qualitative factors specific to the Civil reporting unit which indicate potential triggering events that would more likely than not reduce the fair value of the Civil reporting unit below its carrying amount. Intangible Assets Intangible assets consist of the following: As of June 30, 2019 Weighted Accumulated Average Accumulated Impairment Carrying Amortization (in thousands) Cost Amortization Charge Value Period Trade names (non-amortizable) $ 117,600 $ — $ ( 67,190 ) $ 50,410 Indefinite Trade names (amortizable) 74,350 ( 20,023 ) ( 23,232 ) 31,095 20 years Contractor license 6,000 — ( 6,000 ) — N/A Customer relationships 39,800 ( 20,520 ) ( 16,645 ) 2,635 12 years Construction contract backlog 73,706 ( 73,706 ) — — N/A Total $ 311,456 $ ( 114,249 ) $ ( 113,067 ) $ 84,140 As of December 31, 2018 Weighted Accumulated Average Accumulated Impairment Carrying Amortization (in thousands) Cost Amortization Charge Value Period Trade names (non-amortizable) $ 117,600 $ — $ ( 67,190 ) $ 50,410 Indefinite Trade names (amortizable) 74,350 ( 18,780 ) ( 23,232 ) 32,338 20 years Contractor license 6,000 — ( 6,000 ) — N/A Customer relationships 39,800 ( 19,992 ) ( 16,645 ) 3,163 12 years Construction contract backlog 73,706 ( 73,706 ) — — N/A Total $ 311,456 $ ( 112,478 ) $ ( 113,067 ) $ 85,911 Amortization expense for the three and six months ended June 30, 2019 was $ 0.9 million and $ 1.8 million, respectively. Amortization expense for the three and six months ended June 30, 2018 was $ 0.9 million and $ 1.8 million, respectively. As of June 30, 2019, amortization expense is estimated to be $ 1.8 million for the remainder of 2019, $ 3.5 million in 2020, $ 3.4 million in 2021, $ 2.6 million in 2022 and $ 2.5 million in both 2023 and 2024. Certain trade names have an estimated indefinite life and are not amortized to earnings, but instead are reviewed for impairment annually, or more often if events occur or circumstances change which suggest that the non-amortizable trade names should be reevaluated. The Company has also monitored events and circumstances as well as any entity-specific quantitative or qualitative factors, which occurred during interim periods since the annual test, that suggest intangible assets should be reevaluated for impairment. Management concluded that no triggering events occurred since the date of its last annual test and prior to the second quarter that would more likely than not reduce the fair value of the Company’s intangible assets below their carrying amounts. In conjunction with its interim goodwill test during the second quarter of 2019, the Company also evaluated its non-amortizable trade names for potential impairment due to the triggering factors related to goodwill mentioned above. The Company performed its interim impairment test by comparing the carrying value of its indefinite-lived intangible assets to their calculated fair value, which is determined by the income approach (relief from royalty method). This income-based valuation approach involves similar key assumptions to the goodwill impairment analysis discussed above. The interim impairment test performed in the second quarter of 2019 resulted in an estimated fair value for the non-amortizable trade names that substantially exceeded their respective net book values; therefore, no impairment charge was necessary for the six months ended June 30, 2019. While the key assumptions used in the impairment test of the non-amortizable trade names are similar to those used in the evaluation of goodwill, historically, the headroom (the excess of calculated fair value over carrying value) has been relatively higher for non-amortizable trade names than for goodwill. Unlike goodwill, trade names possess inherent value based on market perception which is valued considering the cost savings available through ownership and the avoidance of paying royalties associated with revenue generation. The discounted value is not impacted by cash flow related assumptions such as working capital investment. Consequently, goodwill was impaired while the non-amortizable trade name intangible assets were not. The Company also performed a qualitative assessment to evaluate its long-lived tangible and intangible assets with finite lives due to the changes in circumstances since the Company’s 2018 annual impairment analysis. Based on this assessment in which there were no identified changes to market prices, the manner of use or the planned purchase or sale of assets/asset groups, the Company concluded that no triggering events occurred since the date of its last annual test that would more likely than not reduce the fair value of its long-lived tangible and intangible assets with finite lives below their carrying amounts.

Financial Commitments

Financial Commitments	6 Months Ended
	Jun. 30, 2019
Financial Commitments [Abstract]
Financial Commitments	(9) Financial Commitments Long-Term Debt Long-term debt as reported on the Condensed Consolidated Balance Sheets consisted of the following: As of June 30, As of December 31, (in thousands) 2019 2018 2017 Senior Notes $ 493,935 $ 493,521 2017 Credit Facility 235,000 41,000 Convertible Notes 176,760 171,481 Equipment financing and mortgages 42,961 50,904 Other indebtedness 7,521 4,598 Total debt 956,177 761,504 Less: Current maturities 14,414 16,767 Long-term debt, net $ 941,763 $ 744,737 The following table reconciles the outstanding debt balance to the reported debt balances as of June 30, 2019 and December 31, 2018: As of June 30, 2019 As of December 31, 2018 (in thousands) Outstanding Long-Term Debt Unamortized Discount and Issuance Costs Long-Term Debt, as reported Outstanding Long-Term Debt Unamortized Discount and Issuance Costs Long-Term Debt, as reported 2017 Senior Notes $ 500,000 $ ( 6,065 ) $ 493,935 $ 500,000 $ ( 6,479 ) $ 493,521 Convertible Notes 200,000 ( 23,240 ) 176,760 200,000 ( 28,519 ) 171,481 The unamortized issuance costs related to the 2017 Credit Facility were $ 4.5 million and $ 4.8 million as of June 30, 2019 and December 31, 2018, respectively, and are included in other assets in the Condensed Consolidated Balance Sheets. 2017 Senior Notes On April 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-annually in May and November of each year, beginning in November 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 offering of the Company’s equity. 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 to 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 events of default and restrictions on the payment of dividends and share repurchases. 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 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 borrowings 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) the London Interbank Offered Rate (“LIBOR”) plus a margin of between 1.50 % and 3.00 % 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 %), plus a margin of between 0.50 % and 2.00 %, in each case based on the Consolidated Leverage Ratio (as defined in the 2017 Credit Facility). In addition to paying interest on outstanding principal under the 2017 Credit Facility, 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 weighted-average annual interest rate on borrowings under the 2017 Revolver was approximately 5.18 % during the six months ended June 30, 2019. 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. On May 7, 2019, certain provisions of the 2017 Credit Facility were amended, including setting the maximum leverage ratio at 3.50 :1.00 for the remainder of its term, thus eliminating the step down from 3.50 :1:00 to 3.25 :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. As of June 30, 2019, there was $ 115 million available under the 2017 Revolver, and the Company had not utilized the 2017 Credit Facility for letters of credit. The Company was in compliance with the financial covenants under the 2017 Credit Facility as of June 30, 2019 (the goodwill impairment charge, as discussed in Note 8, Goodwill and Intangible Assets , did not impact the financial covenant calculations). 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 the Company’s 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 with cash, shares of its common stock or a combination thereof. As of June 30, 2019, the conversion provisions of the Convertible Notes have not been triggered. Interest Expense Interest expense as reported in the Condensed Consolidated Statements of Operations consisted of the following: Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Cash interest expense: Interest on 2017 Senior Notes $ 8,594 $ 8,594 $ 17,187 $ 17,187 Interest on 2017 Credit Facility 3,682 2,354 6,327 3,704 Interest on Convertible Notes 1,438 1,437 2,875 2,875 Other interest 541 626 1,116 1,383 Total cash interest expense 14,255 13,011 27,505 25,149 Non-cash interest expense: (a) Amortization of discount and debt issuance costs on Convertible Notes 2,671 2,432 5,279 4,808 Amortization of debt issuance costs on 2017 Credit Facility 387 360 749 720 Amortization of debt issuance costs on 2017 Senior Notes 209 195 414 386 Total non-cash interest expense 3,267 2,987 6,442 5,914 Total interest expense $ 17,522 $ 15,998 $ 33,947 $ 31,063 (a) The combination of cash and non-cash interest expense produces effective interest rates that are higher than contractual rates. Accordingly, the effective interest rates for the 2017 Senior Notes and the Convertible Notes were 7.13 % and 9.39 %, respectively, for the six months ended June 30, 2019.

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	(10) Leases The Company leases certain office space, construction and office equipment, vehicles and temporary housing generally under non-cancelable operating leases. Leases with an initial term of one year or less are not recorded on the balance sheet, and the Company generally recognizes lease expense for these leases on a straight-line basis over the lease term. As of June 30, 2019, the Company’s operating leases have remaining lease terms ranging from less than one year to 10 years, some of which include options to renew the leases. The exercise of lease renewal options is generally at the Company’s sole discretion. The Company’s leases do not contain any material residual value guarantees or material restrictive covenants. The Company determines if an arrangement is a lease at inception. Operating lease ROU assets are included in other assets, while current and long-term operating lease liabilities are included in accrued expenses and other current liabilities, and other long-term liabilities, respectively, on the Condensed Consolidated Balance Sheet as of June 30, 2019. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. The present value of future lease payments are discounted using either the implicit rate in the lease, if known, or the Company’s incremental borrowing rate for the specific lease as of the lease commencement date. The ROU asset is also adjusted for any prepayments made or incentives received. The lease terms include options to extend or terminate the lease only to the extent it is reasonably certain any of those options will be exercised. Lease expense is recognized on a straight-line basis over the lease term. The Company accounts for lease components (e.g., fixed payments) separate from the non-lease components (e.g., common-area maintenance costs). The Company does not have any material financing leases. The following table presents components of lease expense for the three and six months ended June 30, 2019: Three Months Ended Six Months Ended (in thousands) June 30, 2019 June 30, 2019 Operating lease expense $ 3,921 $ 7,702 Short-term lease expense (a) 16,486 33,057 20,407 40,759 Less: Sublease income 262 521 Total lease expense $ 20,145 $ 40,238 (a) Short-term lease expense includes all leases with lease terms ranging from less than one month to one year . Short-term leases include, among other things, construction equipment rented on an as-needed basis as well as temporary housing. The following table presents supplemental balance sheet information related to operating leases as of June 30, 2019: As of June 30, (dollars in thousands) Balance Sheet Line Item 2019 Assets ROU assets Other assets $ 42,968 Total lease assets $ 42,968 Liabilities Current lease liabilities Accrued expenses and other current liabilities $ 11,991 Long-term lease liabilities Other long-term liabilities 34,002 Total lease liabilities $ 45,993 Weighted-average remaining lease term (in years) 4.7 Weighted-average discount rate 5.85 % The following table presents supplemental cash flow information and non-cash activity related to operating leases for the six months ended June 30, 2019: Six Months Ended (in thousands) June 30, 2019 Operating cash flow information: Cash paid for amounts included in the measurement of lease liabilities $ ( 7,622 ) Non-cash activity: ROU assets obtained in exchange for lease liabilities $ 6,040 The following table presents maturities of operating lease liabilities on an undiscounted basis as of June 30, 2019: Year (in thousands) Operating Leases 2019 (excluding the six months ended June 30, 2019) $ 7,442 2020 11,987 2021 8,595 2022 7,346 2023 6,129 Thereafter 12,431 Total lease payments 53,930 Less: Imputed interest 7,937 Total $ 45,993 As of December 31, 2018, future minimum lease payments under long-term non-cancelable operating leases as classified under ASC 840 were as follows: Year (in thousands) Operating Leases 2019 $ 14,039 2020 10,706 2021 7,464 2022 6,567 2023 5,587 Thereafter 11,662 56,025 Less: Sublease rental agreements 1,398 Total $ 54,627

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies [Abstract]
Commitments and Contingencies	(11) Commitments and Contingencies The Company and certain of its subsidiaries are involved in litigation and other legal proceedings and forms of dispute resolution in the ordinary course of business, including but not limited to disputes over contract payment and/or performance-related issues (such as disagreements regarding delay or a change in the scope of work of a project and/or the price associated with that change) and other matters incidental to the Company’s business. In accordance with ASC 606, the Company makes assessments of these types of matters on a routine basis and, to the extent permitted by ASC 606, estimates and records recovery related to these matters as a form of variable consideration at the most likely amount the Company expects to receive, as discussed further in Note 4, Contract Assets and Liabilities. In addition, the Company is contingently liable for litigation, performance guarantees and other commitments arising in the ordinary course of business, which are accounted for in accordance with ASC 450, Contingencies . Management reviews these matters regularly and updates or revises its estimates from time to time as warranted by subsequent information and developments. These assessments require judgments concerning matters that are inherently uncertain, such as litigation developments and outcomes, the anticipated outcome of negotiations and the estimated cost of resolving disputes. Consequently, these assessments are estimates, and actual amounts may vary from such estimates. In addition, because such matters are typically resolved over long periods of time, the Company’s assets and liabilities may change over time should the circumstances dictate. 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 effect on the Company’s consolidated financial position. Long Island Expressway/Cross Island Parkway Matter The Company reconstructed the Long Island Expressway/Cross Island Parkway Interchange (“LIE Project”) for the New York State Department of Transportation (“NYSDOT”). The $ 130 million project was substantially completed in January 2004 and was accepted by 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 NYSDOT is responsible. In March 2011, the Company opened a case with the New York State Court of Claims against NYSDOT related to the LIE Project. In May 2011, 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 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. In March 2012, the Company filed its formal Verified Claim seeking $ 50.7 million in damages. In May 2012, NYSDOT served its answer and asserted counterclaims in the amount of $ 151 million alleging fraud in the inducement and punitive damages related to alleged violations of the 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 NYSDOT’s affirmative counterclaims. In June 2018, following additional summary judgment motions, the Court granted the Company’s motion to dismiss NYSDOT’s affirmative defenses, which eliminated the use of NYSDOT’s counterclaims of $ 151 million as a defense to the claims of the Company. In October 2018, NYSDOT filed a notice of appeal. A trial date for the appeal has not been set. 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. As of June 30, 2019, the Company has concluded that the potential for a material adverse financial impact due to NYSDOT’s counterclaims is remote. Fontainebleau Matter Desert Mechanical, Inc. (“DMI”) and Fisk Electric Company (“Fisk”), wholly owned subsidiaries of the Company, were subcontractors on the Fontainebleau project located in Las Vegas, Nevada, a hotel/casino complex with approximately 3,800 rooms (the “Project”). In June 2009, the owners of the Project filed for bankruptcy protection, under Chapter 11 of the U.S. Bankruptcy Code, in the Southern District of Florida. DMI and Fisk recorded mechanic’s liens against the Project totaling approximately $ 44 million, for unpaid labor, materials and equipment it furnished to the Project. Other unaffiliated contractors, subcontractors and suppliers also recorded mechanic’s liens against the Project, subjecting the property to approximately $ 550 million in total lien claims by the various lien claimants who furnished labor, materials and equipment to the Project (the “Statutory Lienholders”). In June 2009, DMI filed suit against Turnberry West Construction, Inc., the general contractor, in the Eighth Judicial District Court, Clark County, Nevada, 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 for approximately $ 150 million. Certain Project lenders (the “Lenders”) who had recorded deeds of trust as security interests in the property which far exceeded the sale proceeds, filed suit against the Statutory Lienholders, including DMI and Fisk, alleging that all mechanic’s liens were subordinate to the Lenders’ deeds of trust against the property. The Nevada Supreme Court ruled in October 2012 that under Nevada Law, the mechanic’s lien claims had priority over a portion of the deeds of trust, but not all of them. In October 2013, a comprehensive settlement agreement was reached by and among the Statutory Lienholders and the Lenders to divide the Sale Proceeds such that the Statutory Lienholders would receive approximately $ 85 million of the sale proceeds (the “Net Statutory Lienholder Proceeds”) and the Lenders would receive the balance. The Bankruptcy Court appointed a mediator to facilitate a settlement between the Statutory Lienholders as to how the Net Statutory Lienholder Proceeds would be distributed, but after engaging in numerous mediation sessions spanning several years, the parties were unable to reach a resolution. DMI filed a motion seeking permission from the Bankruptcy Court to file an action in Nevada to enforce its lien rights against the Net Statutory Lienholder Proceeds, and the motion was granted. Pursuant to that order, litigation involving all Statutory Lienholders was commenced at the end of November 2017 (the “Nevada Action”). On April 25, 2019, DMI and Fisk agreed to a settlement in the Nevada Action with another Statutory Lienholder, who has guaranteed payment on account of their claims. The settlement amount will be paid when the Bankruptcy Court distributes the Net Statutory Lienholder Proceeds to the Statutory Lienholders, which is expected to occur later in 2019. The settlement had no material impact on the consolidated financial statements. Five Star Electric Matter In the third quarter of 2015, Five Star Electric Corp. (“Five Star”), a wholly owned subsidiary of the Company that was acquired in 2011, entered into a tolling agreement (which has since expired) related to an ongoing investigation being conducted by the United States Attorney’s Office for the Eastern District of New York (“USAO EDNY”). Five Star has been cooperating with the USAO EDNY since late June 2014, when it was first made aware of the investigation, and has provided information requested by the government related to its use of certain minority-owned, women-owned, small and disadvantaged business enterprises and certain of Five Star’s employee compensation, benefit and tax practices. As of June 30, 2019, the Company cannot predict the ultimate outcome of the investigation and cannot reasonably estimate the potential loss or range of loss 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 required 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 repaired. 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 was 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 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. STP is also asserting extra-contractual and statutory claims against the Insurers. WSDOT is deemed a plaintiff since WSDOT is an insured under the Policy and had filed its own claim for damages. Hitachi Zosen (“Hitachi”), the manufacturer of the TBM, has also joined the case as a plaintiff for costs incurred to repair the damages to the TBM. In September 2018, rulings received on pre-trial motions effectively limited potential recovery under the Policy for STP, WSDOT and Hitachi. However, on December 19, 2018, the Court of Appeal granted the Company’s request for a discretionary appeal of those rulings. The appeal is expected to be heard in the second half of 2019. STP submitted damages to the Insurers in the King County lawsuit in the amount of $ 532 million. STP is also seeking these damages from WSDOT and Hitachi related to the pipe-strike by the TBM in a related lawsuit in Thurston County (see following paragraph). 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, seeking $ 57.2 million in damages and seeking declaratory relief concerning contract interpretation. STP filed its answer to WSDOT’s complaint and filed a counterclaim against WSDOT and Hitachi seeking damages of $ 667 million. Trial is scheduled for October 2019. As of June 30, 2019, 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, and the potential loss or range of loss is not reasonably estimable. With respect to STP’s claims against the Insurers, WSDOT and Hitachi, management 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 recoveries vary from the estimate, the impact of the change will be reflected in the financial statements at that time.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2019
Share-Based Compensation [Abstract]
Share-Based Compensation	(12) Share-Based Compensation As of June 30, 2019, there were 1,553,243 shares of common stock available for grant under the Tutor Perini Corporation Omnibus Incentive Plan. During the first six months of 2019 and 2018, the Company issued the following share-based instruments: (1) restricted stock units totaling 175,000 and 614,000 with weighted-average fair values per share of $ 20.41 and $ 25.19 , respectively; (2) stock options totaling 85,000 and 579,000 with weighted-average fair values per share of $ 7.57 and $ 11.45 , respectively, and weighted-average per share exercise prices of $ 25.62 and $ 23.73 , respectively; and (3) unrestricted stock units totaling 98,591 and 115,420 with weighted-average fair values per share of $ 15.72 and $ 21.26 , respectively . During the six months ended June 30, 2019, 750,000 stock options with a weighted-average per share exercise price of $ 20.33 expired. The fair value of restricted and unrestricted stock units is based on the closing price of the Company’s common stock on the New York Stock Exchange on the date of the grant and the fair value of stock options is based on the Black-Scholes model. The fair value of stock options granted during the first six months of 2019 was determined using the Black-Scholes model based on the following weighted-average assumptions: (i) expected life of 5.4 years, (ii) expected volatility of 36.63 %, (iii) risk-free rate of 2.66 %, and (iv) no quarterly dividends. For certain performance-based awards containing market condition components, the fair value on the grant date is determined using a Monte Carlo simulation model. For the three and six months ended June 30, 2019, the Company recognized, as part of general and administrative expenses, costs for share-based payment arrangements totaling $ 4.6 million and $ 10.1 million, respectively, and $ 6.0 million and $ 12.1 million for the three and six months ended June 30, 2018, respectively. As of June 30, 2019, the balance of unamortized share-based compensation expense was $ 22.6 million, which is expected to be recognized over a weighted-average period of 1.8 years.

Employee Pension Plans

Employee Pension Plans	6 Months Ended
	Jun. 30, 2019
Employee Pension Plans [Abstract]
Employee Pension Plans	(13) Employee Pension Plans The Company has a defined benefit pension plan and an unfunded supplemental retirement plan. Effective June 1, 2004, all benefit accruals under these plans 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 a summary of the net periodic benefit cost for the three and six months ended June 30, 2019 and 2018 : Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Interest cost $ 948 $ 883 $ 1,896 $ 1,766 Expected return on plan assets ( 1,043 ) ( 1,077 ) ( 2,086 ) ( 2,154 ) Amortization of net loss 463 513 926 1,026 Other 225 213 450 426 Net periodic benefit cost $ 593 $ 532 $ 1,186 $ 1,064 The Company contributed $ 2.0 million and $ 1.4 million to its defined benefit pension plan during each of the six-month periods ended June 30, 2019 and 2018, respectively, and expects to contribute an additional $ 2.6 million by the end of 2019.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2019
Fair Value Measurements [Abstract]
Fair Value Measurements	(14) Fair Value Measurements The fair value hierarchy established by ASC 820, Fair Value Measurement , 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 unobservable The following fair value hierarchy table presents the Company’s assets that are measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018: As of June 30, 2019 As of December 31, 2018 Fair Value Hierarchy Fair Value Hierarchy (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash and cash equivalents (a) $ 149,881 $ — $ — $ 149,881 $ 116,075 $ — $ — $ 116,075 Restricted cash (a) 4,742 — — 4,742 3,788 — — 3,788 Restricted investments (b) — 65,287 — 65,287 — 58,142 — 58,142 Investments in lieu of retainage (c) 71,828 1,186 — 73,014 62,858 1,190 — 64,048 Total $ 226,451 $ 66,473 $ — $ 292,924 $ 182,721 $ 59,332 $ — $ 242,053 (a) Includes money market funds and short-term investments with maturity dates of three months or less when acquired. (b) Restricted investments, as of June 30, 2019, consist of investments in corporate debt securities of $ 37.0 million and U.S. government agency securities of $ 28.3 million with maturities of up to five years , and are valued based on pricing models, which are determined from a compilation of primarily observable market information, broker quotes in non-active markets or similar assets and are therefore classified as Level 2 assets. As of December 31, 2018, restricted investments consisted of investments in corporate debt securities of $ 30.4 million and U.S. government agency securities of $ 27.7 million. The amortized cost of these securities at June 30, 2019 and December 31, 2018 was not materially different from the fair value. (c) Investments in lieu of retainage are included in retainage receivable and as of June 30, 2019 are comprised of money market funds of $ 71.8 million and municipal bonds of $ 1.2 million. 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. As of December 31, 2018, investments in lieu of retainage consisted of money market funds of $ 62.9 million and municipal bonds of $ 1.2 million. The amortized cost of these available-for-sale securities at June 30, 2019 and December 31, 2018 was not materially different from the fair value. 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 2017 Senior Notes was $ 475.9 million and $ 466.8 million as of June 30, 2019 and December 31, 2018, respectively. The fair value of the Convertible Notes was $ 188.5 million and $ 184.4 million as of June 30, 2019 and December 31, 2018, respectively. The fair values of the 2017 Senior Notes and Convertible Notes were determined using Level 1 inputs, specifically current observable market prices. The reported value of the Company’s remaining borrowings approximates fair value as of June 30, 2019 and December 31, 2018.

Variable Interest Entities (VIE

Variable Interest Entities (VIEs)	6 Months Ended
	Jun. 30, 2019
Variable Interest Entities (VIEs) [Abstract]
Variable Interest Entities (VIEs)	(15) Variable Interest Entities (VIEs) The Company may form joint ventures or partnerships with third parties for the execution of projects. In accordance with ASC 810, Consolidation (“ASC 810”), the Company assesses its partnerships and joint ventures at inception to determine if any meet the qualifications of a VIE. The Company considers a joint venture a VIE if either (a) the total equity investment is not sufficient to permit the entity to finance its activities without additional subordinated financial support, (b) characteristics of a controlling financial interest are missing (either the ability to make decisions through voting or other rights, the obligation to absorb the expected losses of the entity or the right to receive the expected residual returns of the entity), or (c) the voting rights of the equity holders are not proportional to their obligations to absorb the expected losses of the entity and/or their rights to receive the expected residual returns of the entity, and substantially all of the entity’s activities either involve or are conducted on behalf of an investor that has disproportionately few voting rights. Upon the occurrence of certain events outlined in ASC 810, the Company reassesses its initial determination of whether the joint venture is a VIE. ASC 810 also requires the Company to determine whether it is the primary beneficiary of the VIE. The Company concludes that it is the primary beneficiary and consolidates the VIE if the Company has both (a) the power to direct the economically significant activities of the VIE and (b) the obligation to absorb losses of, or the right to receive benefits from, the VIE that could potentially be significant to the VIE. The Company considers the contractual agreements that define the ownership structure, distribution of profits and losses, risks, responsibilities, indebtedness, voting rights and board representation of the respective parties in determining if the Company is the primary beneficiary. The Company also considers all parties that have direct or implicit variable interests when determining whether it is the primary beneficiary. In accordance with ASC 810, management’s assessment of whether the Company is the primary beneficiary of a VIE is performed continuously. As of June 30, 2019, the Company had unconsolidated VIE-related current assets and liabilities of $ 1.9 million and $ 1.6 million, respectively, included in the Company’s Condensed Consolidated Balance Sheet. As of December 31, 2018, the Company had unconsolidated VIE-related current assets and liabilities of $ 4.0 million and $ 3.8 million, respectively, included in the Company’s Condensed Consolidated Balance Sheet. The Company’s maximum exposure to loss as a result of its investments in unconsolidated VIEs is typically limited to the aggregate of the carrying value of the investment and future funding commitments. There were no future funding requirements for the unconsolidated VIEs as of June 30, 2019. As of June 30, 2019, the Company’s Condensed Consolidated Balance Sheet included current and noncurrent assets of $ 249.6 million and $ 56.1 million, respectively, as well as current liabilities of $ 368.0 million related to the operations of its consolidated VIEs. As of December 31, 2018, the Company’s Condensed Consolidated Balance Sheet included current and noncurrent assets of $ 173.9 million and $ 51.5 million, respectively, as well as current liabilities of $ 319.9 million related to the operations of its consolidated VIEs. Below is a discussion of some of the Company’s more significant or unique VIEs. The Company established a joint venture to construct the Purple Line Extension Section 2 (Tunnels and Stations) and Section 3 (Stations) mass-transit projects in Los Angeles, California with a combined value of approximately $ 2.8 billion. The Company has a 75 % interest in the joint venture with the remaining 25 % held by O&G Industries, Inc. The joint venture was initially financed with contributions from the partners and, per the terms of the joint venture agreement, the partners may be required to provide additional capital contributions in the future. The Company has determined that this joint venture is a VIE for which the Company is the primary beneficiary. The Company also established a joint venture with Parsons Corporation (“Parsons”) to construct the Newark Liberty International Airport Terminal One project, a $ 1.4 billion transportation infrastructure project in Newark, New Jersey. The Company has an 80 % interest in the joint venture with the remaining 20 % held by Parsons. The joint venture was initially financed with contributions from the partners and, per the terms of the joint venture agreement, the partners may be required to provide additional capital contributions in the future. The Company has determined that this joint venture is a VIE for which the Company is the primary beneficiary.

Changes in Equity

Changes in Equity	6 Months Ended
	Jun. 30, 2019
Changes in Equity [Abstract]
Changes in Equity	(16) Changes in Equity A reconciliation of the changes in equity for the three and six months ended June 30, 2019 and 2018 is provided below: Three Months Ended June 30, 2019 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - March 31, 2019 $ 50,180 $ 1,105,184 $ 701,325 $ ( 44,200 ) $ ( 17,310 ) $ 1,795,179 Net income (loss) — — ( 320,530 ) — 5,091 ( 315,439 ) Other comprehensive income (loss) — — — 1,670 157 1,827 Share-based compensation — 5,312 — — — 5,312 Issuance of common stock, net 99 — — — — 99 Contributions from noncontrolling interests — — — — 2,581 2,581 Balance - June 30, 2019 $ 50,279 $ 1,110,496 $ 380,795 $ ( 42,530 ) $ ( 9,481 ) $ 1,489,559 Six Months Ended June 30, 2019 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - December 31, 2018 $ 50,026 $ 1,102,919 $ 701,681 $ ( 45,449 ) $ ( 21,288 ) $ 1,787,889 Net income (loss) — — ( 320,886 ) — 10,169 ( 310,717 ) Other comprehensive income (loss) — — — 2,919 259 3,178 Share-based compensation — 10,095 — — — 10,095 Issuance of common stock, net 253 ( 2,518 ) — — — ( 2,265 ) Contributions from noncontrolling interests — — — — 5,379 5,379 Distributions to noncontrolling interests — — — — ( 4,000 ) ( 4,000 ) Balance - June 30, 2019 $ 50,279 $ 1,110,496 $ 380,795 $ ( 42,530 ) $ ( 9,481 ) $ 1,489,559 Three Months Ended June 30, 2018 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - March 31, 2018 $ 49,913 $ 1,087,164 $ 606,121 $ ( 43,596 ) $ ( 14,131 ) $ 1,685,471 Net income — — 24,883 — 3,013 27,896 Other comprehensive loss — — — ( 1,209 ) — ( 1,209 ) Share-based compensation — 6,872 — — — 6,872 Issuance of common stock, net 98 ( 162 ) — — — ( 64 ) Contributions from noncontrolling interests — — — — 1,000 1,000 Distributions to noncontrolling interests — — — — ( 7,500 ) ( 7,500 ) Balance - June 30, 2018 $ 50,011 $ 1,093,874 $ 631,004 $ ( 44,805 ) $ ( 17,618 ) $ 1,712,466 Six Months Ended June 30, 2018 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - December 31, 2017 $ 49,781 $ 1,084,205 $ 622,007 $ ( 42,718 ) $ ( 8,495 ) $ 1,704,780 Cumulative effect of accounting change — — ( 3,762 ) — ( 1,818 ) ( 5,580 ) Net income — — 12,759 — 4,195 16,954 Other comprehensive loss — — — ( 2,087 ) — ( 2,087 ) Share-based compensation — 12,271 — — — 12,271 Issuance of common stock, net 230 ( 2,602 ) — — — ( 2,372 ) Contributions from noncontrolling interests — — — — 1,000 1,000 Distributions to noncontrolling interests — — — — ( 12,500 ) ( 12,500 ) Balance - June 30, 2018 $ 50,011 $ 1,093,874 $ 631,004 $ ( 44,805 ) $ ( 17,618 ) $ 1,712,466

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2019
Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income (Loss)	(17) 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 plan assets/liabilities, cumulative foreign currency translation and change in fair value of investments as components of accumulated other comprehensive income (loss) (“AOCI”). The tax effects of the components of other comprehensive income (loss) for the three and six months ended June 30, 2019 and 2018 were as follows: Three Months Ended Three Months Ended June 30, 2019 June 30, 2018 (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 (loss): Defined benefit pension plan adjustments $ 464 $ ( 133 ) $ 331 $ 494 $ ( 140 ) $ 354 Foreign currency translation adjustments 1,072 ( 262 ) 810 ( 914 ) 280 ( 634 ) Unrealized gain (loss) in fair value of investments 867 ( 181 ) 686 ( 1,176 ) 247 ( 929 ) Total other comprehensive income (loss) 2,403 ( 576 ) 1,827 ( 1,596 ) 387 ( 1,209 ) Less: Other comprehensive income attributable to noncontrolling interests (a) 157 — 157 — — — Total other comprehensive income (loss) attributable to Tutor Perini Corporation $ 2,246 $ ( 576 ) $ 1,670 $ ( 1,596 ) $ 387 $ ( 1,209 ) (a) The only component of other comprehensive income attributable to noncontrolling interests is foreign currency translation. Six Months Ended Six Months Ended June 30, 2019 June 30, 2018 (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 (loss): Defined benefit pension plan adjustments $ 926 $ ( 265 ) $ 661 $ 1,026 $ ( 291 ) $ 735 Foreign currency translation adjustment 1,551 ( 393 ) 1,158 ( 2,553 ) 745 ( 1,808 ) Unrealized gain (loss) in fair value of investments 1,725 ( 366 ) 1,359 ( 1,295 ) 281 ( 1,014 ) Total other comprehensive income (loss) 4,202 ( 1,024 ) 3,178 ( 2,822 ) 735 ( 2,087 ) Less: Other comprehensive income (loss) attributable to noncontrolling interests (a) 259 — 259 — — — Total other comprehensive income (loss) attributable to Tutor Perini Corporation $ 3,943 $ ( 1,024 ) $ 2,919 $ ( 2,822 ) $ 735 $ ( 2,087 ) (a) The only component of other comprehensive income attributable to noncontrolling interests is foreign currency translation. The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and six months ended June 30, 2019 were as follows: Three Months Ended June 30, 2019 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Fair Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of March 31, 2019 $ ( 38,340 ) $ ( 6,069 ) $ 209 $ ( 44,200 ) Other comprehensive income before reclassifications — 653 714 1,367 Amounts reclassified from AOCI 331 — ( 28 ) 303 Total other comprehensive income 331 653 686 1,670 Balance as of June 30, 2019 $ ( 38,009 ) $ ( 5,416 ) $ 895 $ ( 42,530 ) Six Months Ended June 30, 2019 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Fair Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of December 31, 2018 $ ( 38,670 ) $ ( 6,315 ) $ ( 464 ) $ ( 45,449 ) Other comprehensive income before reclassifications — 899 1,379 2,278 Amounts reclassified from AOCI 661 — ( 20 ) 641 Total other comprehensive income 661 899 1,359 2,919 Balance as of June 30, 2019 $ ( 38,009 ) $ ( 5,416 ) $ 895 $ ( 42,530 ) The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and six months ended June 30, 2018 were as follows: Three Months Ended June 30, 2018 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Fair Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of March 31, 2018 $ ( 39,060 ) $ ( 4,765 ) $ 229 $ ( 43,596 ) Other comprehensive loss before reclassifications — ( 634 ) ( 929 ) ( 1,563 ) Amounts reclassified from AOCI 354 — — 354 Total other comprehensive income (loss) 354 ( 634 ) ( 929 ) ( 1,209 ) Balance as of June 30, 2018 $ ( 38,706 ) $ ( 5,399 ) $ ( 700 ) $ ( 44,805 ) Six Months Ended June 30, 2018 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of December 31, 2017 $ ( 39,441 ) $ ( 3,591 ) $ 314 $ ( 42,718 ) Other comprehensive loss before reclassifications — ( 1,808 ) ( 1,014 ) ( 2,822 ) Amounts reclassified from AOCI 735 — — 735 Total other comprehensive income (loss) 735 ( 1,808 ) ( 1,014 ) ( 2,087 ) Balance as of June 30, 2018 $ ( 38,706 ) $ ( 5,399 ) $ ( 700 ) $ ( 44,805 )

Business Segments

Business Segments	6 Months Ended
	Jun. 30, 2019
Business Segments [Abstract]
Business Segments	(18) 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 HVAC (heating, ventilation and air conditioning). As described below, the Company’s 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 contracting services provided by the Civil segment 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 technology. 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 cost and risk management. To the extent that a contract is co-managed and co-executed among segments, the Company allocates the share of revenues and costs of the contract to each segment to reflect the shared responsibilities in the management and execution of the project. The following tables set forth certain reportable segment information relating to the Company’s operations for the three and six months ended June 30, 2019 and 2018: Reportable Segments Specialty Consolidated (in thousands) Civil Building Contractors Total Corporate Total Three Months Ended June 30, 2019 Total revenue $ 541,117 $ 433,559 $ 223,299 $ 1,197,975 $ — $ 1,197,975 Elimination of intersegment revenue ( 67,459 ) ( 5,241 ) — ( 72,700 ) — ( 72,700 ) Revenue from external customers $ 473,658 $ 428,318 $ 223,299 $ 1,125,275 $ — $ 1,125,275 Income (loss) from construction operations $ ( 164,472 ) $ ( 3,810 ) $ ( 159,795 ) $ ( 328,077 ) (a) $ ( 13,640 ) (b) $ ( 341,717 ) Capital expenditures $ 24,439 $ 150 $ 110 $ 24,699 $ 235 $ 24,934 Depreciation and amortization (c) $ 10,285 $ 497 $ 1,061 $ 11,843 $ 2,754 $ 14,597 Three Months Ended June 30, 2018 Total revenue $ 461,614 $ 447,975 $ 270,633 $ 1,180,222 $ — $ 1,180,222 Elimination of intersegment revenue ( 59,141 ) ( 996 ) — ( 60,137 ) — ( 60,137 ) Revenue from external customers $ 402,473 $ 446,979 $ 270,633 $ 1,120,085 $ — $ 1,120,085 Income (loss) from construction operations $ 49,439 $ 12,536 $ 7,454 $ 69,429 $ ( 14,614 ) (b) $ 54,815 Capital expenditures $ 27,352 $ 592 $ 215 $ 28,159 $ 174 $ 28,333 Depreciation and amortization (c) $ 6,569 $ 489 $ 1,106 $ 8,164 $ 2,813 $ 10,977 (a) During the three months ended June 30, 2019, the Company recorded a non-cash goodwill impairment charge of $ 379.9 million in income (loss) from continuing operations (an unfavorable after-tax impact of $ 329.5 million, or $ 6.56 per diluted share) resulting from an interim impairment test the Company performed as of June 1, 2019. (For further information and breakdown of the goodwill impairment charge by segment, see Note 8, Goodwill and Intangible Assets ). (b) Consists primarily of corporate general and administrative expenses. (c) Depreciation and amortization is included in income (loss) from construction operations. Reportable Segments Specialty Consolidated (in thousands) Civil Building Contractors Total Corporate Total Six Months Ended June 30, 2019 Total revenue $ 924,739 $ 869,802 $ 414,826 $ 2,209,367 $ — $ 2,209,367 Elimination of intersegment revenue ( 117,587 ) ( 8,018 ) — ( 125,605 ) — ( 125,605 ) Revenue from external customers $ 807,152 $ 861,784 $ 414,826 $ 2,083,762 $ — $ 2,083,762 Income (loss) from construction operations $ ( 122,727 ) $ ( 677 ) $ ( 167,283 ) $ ( 290,687 ) (a) $ ( 28,117 ) (b) $ ( 318,804 ) Capital expenditures $ 38,451 $ 205 $ 233 $ 38,889 $ 457 $ 39,346 Depreciation and amortization (c) $ 19,655 $ 1,000 $ 2,125 $ 22,780 $ 5,534 $ 28,314 Six Months Ended June 30, 2018 Total revenue $ 787,014 $ 938,592 $ 545,434 $ 2,271,040 $ — $ 2,271,040 Elimination of intersegment revenue ( 121,427 ) ( 1,372 ) — ( 122,799 ) — ( 122,799 ) Revenue from external customers $ 665,587 $ 937,220 $ 545,434 $ 2,148,241 $ — $ 2,148,241 Income (loss) from construction operations (d) $ 52,278 $ 18,961 $ 14,689 $ 85,928 $ ( 32,038 ) (b) $ 53,890 Capital expenditures $ 46,548 $ 870 $ 634 $ 48,052 $ 251 $ 48,303 Depreciation and amortization (c) $ 12,325 $ 970 $ 2,218 $ 15,513 $ 5,651 $ 21,164 (a) During the six months ended June 30, 2019, the Company recorded a non-cash goodwill impairment charge of $ 379.9 million in income (loss) from continuing operations (an unfavorable after-tax impact of $ 329.5 million, or $ 6.57 per diluted share) resulting from an interim impairment test the Company performed as of June 1, 2019. (For further information and breakdown of the goodwill impairment charge by segment, see Note 8, Goodwill and Intangible Assets). (b) Consists primarily of corporate general and administrative expenses. (c) Depreciation and amortization is included in income (loss) from construction operations. (d) During the six months ended June 30, 2018, the Company recorded a charge of $ 17.8 million in income from construction operations (an after-tax impact of $ 12.8 million, or $ 0.25 per diluted share), which was primarily non-cash, as a result of the unexpected outcome of an arbitration decision related to a subcontract back charge dispute on a Civil segment project in New York that was completed in 2013. A reconciliation of segment results to the consolidated income (loss) before income taxes is as follows: Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Income (loss) from construction operations $ ( 341,717 ) $ 54,815 $ ( 318,804 ) $ 53,890 Other income, net 900 1,050 1,322 1,830 Interest expense ( 17,522 ) ( 15,998 ) ( 33,947 ) ( 31,063 ) Income (loss) before income taxes $ ( 358,339 ) $ 39,867 $ ( 351,429 ) $ 24,657 Total assets by segment were as follows: As of As of (in thousands) June 30, 2019 December 31, 2018 Civil $ 2,545,572 $ 2,574,326 Building 961,287 913,746 Specialty Contractors 607,008 745,313 Corporate and other (a) 299,629 154,367 Total assets $ 4,413,496 $ 4,387,752 (a) Consists principally of cash, equipment, tax-related assets and insurance-related assets, offset by the elimination of assets related to intersegment revenue.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Tables)	6 Months Ended
	Jun. 30, 2019
Recent Accounting Pronouncements [Abstract]
Schedule of the Impact for the Adoption of ASU 842	The effects of the changes made to the Company’s January 1, 2019 consolidated balance sheet for the adoption of ASC 842 were as follows: BALANCE SHEET Balance as of Adjustments due to Balance as of (in thousands) December 31, 2018 (a) ASC 842 January 1, 2019 ASSETS Other assets (b) $ 50,523 $ 43,273 $ 93,796 LIABILITIES Accrued expenses and other current liabilities (b) $ 174,325 $ 11,569 $ 185,894 Other long-term liabilities (b) 151,639 31,704 183,343 (a) Balance as previously reported on the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. (b) Prior to the adoption of ASC 842, operating lease ROU assets and current and long-term operating lease liabilities were not recorded on the Condensed Consolidated Balance Sheets. The following table presents the impacts of adoption of the new leases standard on the Condensed Consolidated Balance Sheet: As of June 30, 2019 Balance Without BALANCE SHEET Adoption of Effect of (in thousands) As Reported ASC 842 Change ASSETS Other assets (a) $ 92,896 $ 50,001 $ 42,895 LIABILITIES Accrued expenses and other current liabilities (a) $ 175,525 $ 163,718 $ 11,807 Other long-term liabilities (a) 186,434 155,346 31,088 (a) Prior to the adoption of ASC 842, operating lease ROU assets and current and long-term operating lease liabilities were not recorded on the Condensed Consolidated Balance Sheets.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue [Abstract]
Disaggregation Of Revenue	Disaggregation of Revenue The following tables disaggregate revenue by end market, customer type and contract type, which the Company believes best depict how the nature, amount, timing and uncertainty of its revenue and cash flows are affected by economic factors for the three and six months ended June 30, 2019 and 2018. Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Civil segment revenue by end market: Mass transit $ 243,620 $ 158,096 $ 389,870 $ 308,222 Bridges 86,467 120,929 155,774 183,739 Highways 60,244 65,809 101,287 83,066 Tunneling 29,586 23,931 64,526 32,632 Other 53,741 33,708 95,695 57,928 Total Civil segment revenue $ 473,658 $ 402,473 $ 807,152 $ 665,587 Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Building segment revenue by end market: Commercial and industrial facilities $ 118,564 $ 59,318 $ 227,917 $ 233,066 Health care facilities 60,796 118,116 141,023 193,197 Municipal and government 68,580 70,528 130,542 120,981 Education facilities 47,062 32,876 89,590 65,358 Hospitality and gaming 35,939 79,490 83,896 161,255 Mass transit 41,211 13,171 70,388 13,171 Mixed use 23,582 38,814 60,209 80,590 Other 32,584 34,666 58,219 69,602 Total Building segment revenue $ 428,318 $ 446,979 $ 861,784 $ 937,220 Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Specialty Contractors segment revenue by end market: Mass transit $ 100,016 $ 78,169 $ 181,411 $ 153,351 Commercial and industrial facilities 43,618 48,952 87,641 88,291 Multi-unit residential 19,225 22,761 30,614 45,850 Mixed use 18,036 51,976 28,705 99,833 Education facilities 14,036 26,298 25,616 51,602 Health care facilities 9,248 14,623 20,899 30,988 Transportation 3,726 22,019 10,161 56,004 Other 15,394 5,835 29,779 19,515 Total Specialty Contractors segment revenue $ 223,299 $ 270,633 $ 414,826 $ 545,434 Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by customer type: State and local agencies $ 381,438 $ 133,798 $ 114,255 $ 629,491 $ 327,195 $ 159,556 $ 106,308 $ 593,059 Private owners 65,241 250,124 106,283 421,648 44,506 235,160 149,337 429,003 Federal agencies 26,979 44,396 2,761 74,136 30,772 52,263 14,988 98,023 Total revenue $ 473,658 $ 428,318 $ 223,299 $ 1,125,275 $ 402,473 $ 446,979 $ 270,633 $ 1,120,085 Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by customer type: State and local agencies $ 638,545 $ 278,484 $ 211,326 $ 1,128,355 $ 553,546 $ 275,541 $ 212,628 $ 1,041,715 Private owners 118,470 498,753 192,970 810,193 71,414 565,105 299,094 935,613 Federal agencies 50,137 84,547 10,530 145,214 40,627 96,574 33,712 170,913 Total revenue $ 807,152 $ 861,784 $ 414,826 $ 2,083,762 $ 665,587 $ 937,220 $ 545,434 $ 2,148,241 Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by contract type: Fixed price $ 349,945 $ 136,250 $ 187,826 $ 674,021 $ 259,927 $ 96,657 $ 234,495 $ 591,079 Guaranteed maximum price 1,644 185,050 7,315 194,009 3,103 270,440 17,462 291,005 Unit price 116,285 2,800 20,183 139,268 121,447 10,771 7,233 139,451 Cost plus fee and other 5,784 104,218 7,975 117,977 17,996 69,111 11,443 98,550 Total revenue $ 473,658 $ 428,318 $ 223,299 $ 1,125,275 $ 402,473 $ 446,979 $ 270,633 $ 1,120,085 Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 Specialty Specialty (in thousands) Civil Building Contractors Total Civil Building Contractors Total Revenue by contract type: Fixed price $ 592,811 $ 250,609 $ 343,090 $ 1,186,510 $ 443,830 $ 175,658 $ 481,919 $ 1,101,407 Guaranteed maximum price 3,878 392,182 10,921 406,981 8,175 532,468 33,042 573,685 Unit price 201,163 8,028 39,186 248,377 190,201 19,588 13,890 223,679 Cost plus fee and other 9,300 210,965 21,629 241,894 23,381 209,506 16,583 249,470 Total revenue $ 807,152 $ 861,784 $ 414,826 $ 2,083,762 $ 665,587 $ 937,220 $ 545,434 $ 2,148,241

Contract Assets And Liabiliti_2

Contract Assets And Liabilities (Tables)	6 Months Ended
	Jun. 30, 2019
Contract Assets and Liabilities [Abstract]
Schedule Of Contract Assets And Liabilities	As of June 30, As of December 31, (in thousands) 2019 2018 Retainage receivable $ 508,423 $ 478,744 Costs and estimated earnings in excess of billings: Claims 752,712 698,274 Unapproved change orders 334,774 354,000 Other unbilled costs and profits 77,922 90,021 Total costs and estimated earnings in excess of billings 1,165,408 1,142,295 Capitalized contract costs 61,376 37,404 Total contract assets $ 1,735,207 $ 1,658,443 Retainage receivable represents amounts invoiced to customers where payments have been partially withheld pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retainage agreements vary from project to project and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress towards completion. Costs and estimated earnings in excess of billings represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Costs and estimated earnings in excess of billings result when either: 1) the appropriate contract revenue amount has been recognized over time in accordance with ASC 606, Revenue from Contracts with Customers (“ASC 606”) , but a portion of the revenue recorded cannot be billed currently due to the billing terms defined in the contract, or 2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. 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; decreases normally result from resolutions and subsequent billings. As discussed in Note 11, Commitments and Contingencies , the resolution of these claims and unapproved change orders may require litigation or other forms of dispute resolution proceedings. 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 incremental progress toward contractual requirements or milestones. Capitalized contract costs primarily represent costs to fulfill a contract that (1) directly relate to an existing or anticipated contract, (2) generate or enhance resources that will be used in satisfying performance obligations in the future and (3) are expected to be recovered through the contract, and are included in other current assets. Capitalized contract costs are generally expensed to the associated contract over the period of anticipated use on the project. During the three and six months ended June 30, 2019, $ 8.6 million and $ 14.3 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts. During the three and six months ended June 30, 2018, $ 4.1 million and $ 8.2 million, respectively, of previously capitalized contract costs were amortized and recognized as expense on the related contracts. Contract liabilities include amounts owed under retainage provisions and billings in excess of costs and estimated earnings. The amount as reported on the Condensed Consolidated Balance Sheets consisted of the following: As of June 30, As of December 31, (in thousands) 2019 2018 Retainage payable $ 227,884 $ 211,956 Billings in excess of costs and estimated earnings 635,924 573,190 Total contract liabilities $ 863,808 $ 785,146

Cash, Cash Equivalents And Re_2

Cash, Cash Equivalents And Restricted Cash (Tables)	6 Months Ended
	Jun. 30, 2019
Cash, Cash Equivalents and Restricted Cash [Abstract]
Reconciliation Of Cash, Cash Equivalents And Restricted Cash	As of June 30, As of December 31, (in thousands) 2019 2018 Cash and cash equivalents available for general corporate purposes $ 64,668 $ 51,749 Joint venture cash and cash equivalents 85,213 64,326 Cash and cash equivalents 149,881 116,075 Restricted cash 4,742 3,788 Total cash, cash equivalents and restricted cash $ 154,623 $ 119,863

Earnings Per Common Share (EP_2

Earnings Per Common Share (EPS) (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Common Share (EPS) [Abstract]
Calculations of the Basic and Diluted EPS	Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per common share data) 2019 2018 2019 2018 Net income (loss) attributable to Tutor Perini Corporation $ ( 320,530 ) $ 24,883 $ ( 320,886 ) $ 12,759 Weighted-average common shares outstanding, basic 50,224 49,946 50,161 49,880 Effect of dilutive restricted stock units and stock options — 494 — 247 Weighted-average common shares outstanding, diluted 50,224 50,440 50,161 50,127 Net income (loss) attributable to Tutor Perini Corporation per common share: Basic $ ( 6.38 ) $ 0.50 $ ( 6.40 ) $ 0.26 Diluted $ ( 6.38 ) $ 0.49 $ ( 6.40 ) $ 0.25 Anti-dilutive securities not included above 4,191 1,682 4,354 3,095

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2019
Goodwill and Intangible Assets [Abstract]
Schedule of Carrying Amount of Goodwill	Specialty (in thousands) Civil Building Contractors Total Gross goodwill $ 492,074 $ 424,724 $ 156,193 $ 1,072,991 Accumulated impairment ( 76,716 ) ( 411,269 ) — ( 487,985 ) Balance as of December 31, 2018 415,358 13,455 156,193 585,006 Second quarter 2019 impairment ( 210,215 ) ( 13,455 ) ( 156,193 ) ( 379,863 ) Balance as of June 30, 2019 (a) $ 205,143 $ — $ — $ 205,143 (a) As of June 30, 2019, accumulated impairment was $ 867.8 million.
Schedule of Intangible Assets	As of June 30, 2019 Weighted Accumulated Average Accumulated Impairment Carrying Amortization (in thousands) Cost Amortization Charge Value Period Trade names (non-amortizable) $ 117,600 $ — $ ( 67,190 ) $ 50,410 Indefinite Trade names (amortizable) 74,350 ( 20,023 ) ( 23,232 ) 31,095 20 years Contractor license 6,000 — ( 6,000 ) — N/A Customer relationships 39,800 ( 20,520 ) ( 16,645 ) 2,635 12 years Construction contract backlog 73,706 ( 73,706 ) — — N/A Total $ 311,456 $ ( 114,249 ) $ ( 113,067 ) $ 84,140 As of December 31, 2018 Weighted Accumulated Average Accumulated Impairment Carrying Amortization (in thousands) Cost Amortization Charge Value Period Trade names (non-amortizable) $ 117,600 $ — $ ( 67,190 ) $ 50,410 Indefinite Trade names (amortizable) 74,350 ( 18,780 ) ( 23,232 ) 32,338 20 years Contractor license 6,000 — ( 6,000 ) — N/A Customer relationships 39,800 ( 19,992 ) ( 16,645 ) 3,163 12 years Construction contract backlog 73,706 ( 73,706 ) — — N/A Total $ 311,456 $ ( 112,478 ) $ ( 113,067 ) $ 85,911

Financial Commitments (Tables)

Financial Commitments (Tables)	6 Months Ended
	Jun. 30, 2019
Financial Commitments [Abstract]
Long-term Debt	As of June 30, As of December 31, (in thousands) 2019 2018 2017 Senior Notes $ 493,935 $ 493,521 2017 Credit Facility 235,000 41,000 Convertible Notes 176,760 171,481 Equipment financing and mortgages 42,961 50,904 Other indebtedness 7,521 4,598 Total debt 956,177 761,504 Less: Current maturities 14,414 16,767 Long-term debt, net $ 941,763 $ 744,737
Reconciliation Of Outstanding Debt Balance To Reported Debt Balance	As of June 30, 2019 As of December 31, 2018 (in thousands) Outstanding Long-Term Debt Unamortized Discount and Issuance Costs Long-Term Debt, as reported Outstanding Long-Term Debt Unamortized Discount and Issuance Costs Long-Term Debt, as reported 2017 Senior Notes $ 500,000 $ ( 6,065 ) $ 493,935 $ 500,000 $ ( 6,479 ) $ 493,521 Convertible Notes 200,000 ( 23,240 ) 176,760 200,000 ( 28,519 ) 171,481
Summary Of Interest Expense As Reported In The Condensed Consolidated Statements of Income	Three Months Ended Six Months Ended June 30, June 30, (in thousands) 2019 2018 2019 2018 Cash interest expense: Interest on 2017 Senior Notes $ 8,594 $ 8,594 $ 17,187 $ 17,187 Interest on 2017 Credit Facility 3,682 2,354 6,327 3,704 Interest on Convertible Notes 1,438 1,437 2,875 2,875 Other interest 541 626 1,116 1,383 Total cash interest expense 14,255 13,011 27,505 25,149 Non-cash interest expense: (a) Amortization of discount and debt issuance costs on Convertible Notes 2,671 2,432 5,279 4,808 Amortization of debt issuance costs on 2017 Credit Facility 387 360 749 720 Amortization of debt issuance costs on 2017 Senior Notes 209 195 414 386 Total non-cash interest expense 3,267 2,987 6,442 5,914 Total interest expense $ 17,522 $ 15,998 $ 33,947 $ 31,063 (a) The combination of cash and non-cash interest expense produces effective interest rates that are higher than contractual rates. Accordingly, the effective interest rates for the 2017 Senior Notes and the Convertible Notes were 7.13 % and 9.39 %, respectively, for the six months ended June 30, 2019.

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Components of Lease Expense	Three Months Ended Six Months Ended (in thousands) June 30, 2019 June 30, 2019 Operating lease expense $ 3,921 $ 7,702 Short-term lease expense (a) 16,486 33,057 20,407 40,759 Less: Sublease income 262 521 Total lease expense $ 20,145 $ 40,238 (a) Short-term lease expense includes all leases with lease terms ranging from less than one month to one year . Short-term leases include, among other things, construction equipment rented on an as-needed basis as well as temporary housing.
Supplemental Financial Statement Information Related To Leases	The following table presents supplemental balance sheet information related to operating leases as of June 30, 2019: As of June 30, (dollars in thousands) Balance Sheet Line Item 2019 Assets ROU assets Other assets $ 42,968 Total lease assets $ 42,968 Liabilities Current lease liabilities Accrued expenses and other current liabilities $ 11,991 Long-term lease liabilities Other long-term liabilities 34,002 Total lease liabilities $ 45,993 Weighted-average remaining lease term (in years) 4.7 Weighted-average discount rate 5.85 % The following table presents supplemental cash flow information and non-cash activity related to operating leases for the six months ended June 30, 2019: Six Months Ended (in thousands) June 30, 2019 Operating cash flow information: Cash paid for amounts included in the measurement of lease liabilities $ ( 7,622 ) Non-cash activity: ROU assets obtained in exchange for lease liabilities $ 6,040
Maturity of Leases Liabilities on an Undiscounted Basis	Year (in thousands) Operating Leases 2019 (excluding the six months ended June 30, 2019) $ 7,442 2020 11,987 2021 8,595 2022 7,346 2023 6,129 Thereafter 12,431 Total lease payments 53,930 Less: Imputed interest 7,937 Total $ 45,993
Future Minimum Rent Payments under Non-Cancelable Operating Leases	Year (in thousands) Operating Leases 2019 $ 14,039 2020 10,706 2021 7,464 2022 6,567 2023 5,587 Thereafter 11,662 56,025 Less: Sublease rental agreements 1,398 Total $ 54,627

Employee Pension Plans (Tables)

Employee Pension Plans (Tables)	6 Months Ended
	Jun. 30, 2019
Employee Pension Plans [Abstract]
Components of Net Periodic Benefit Cost	Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Interest cost $ 948 $ 883 $ 1,896 $ 1,766 Expected return on plan assets ( 1,043 ) ( 1,077 ) ( 2,086 ) ( 2,154 ) Amortization of net loss 463 513 926 1,026 Other 225 213 450 426 Net periodic benefit cost $ 593 $ 532 $ 1,186 $ 1,064

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Measurements [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	As of June 30, 2019 As of December 31, 2018 Fair Value Hierarchy Fair Value Hierarchy (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Cash and cash equivalents (a) $ 149,881 $ — $ — $ 149,881 $ 116,075 $ — $ — $ 116,075 Restricted cash (a) 4,742 — — 4,742 3,788 — — 3,788 Restricted investments (b) — 65,287 — 65,287 — 58,142 — 58,142 Investments in lieu of retainage (c) 71,828 1,186 — 73,014 62,858 1,190 — 64,048 Total $ 226,451 $ 66,473 $ — $ 292,924 $ 182,721 $ 59,332 $ — $ 242,053 (a) Includes money market funds and short-term investments with maturity dates of three months or less when acquired. (b) Restricted investments, as of June 30, 2019, consist of investments in corporate debt securities of $ 37.0 million and U.S. government agency securities of $ 28.3 million with maturities of up to five years , and are valued based on pricing models, which are determined from a compilation of primarily observable market information, broker quotes in non-active markets or similar assets and are therefore classified as Level 2 assets. As of December 31, 2018, restricted investments consisted of investments in corporate debt securities of $ 30.4 million and U.S. government agency securities of $ 27.7 million. The amortized cost of these securities at June 30, 2019 and December 31, 2018 was not materially different from the fair value. (c) Investments in lieu of retainage are included in retainage receivable and as of June 30, 2019 are comprised of money market funds of $ 71.8 million and municipal bonds of $ 1.2 million. 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. As of December 31, 2018, investments in lieu of retainage consisted of money market funds of $ 62.9 million and municipal bonds of $ 1.2 million. The amortized cost of these available-for-sale securities at June 30, 2019 and December 31, 2018 was not materially different from the fair value.

Changes in Equity (Tables)

Changes in Equity (Tables)	6 Months Ended
	Jun. 30, 2019
Changes in Equity [Abstract]
Schedule of Stockholders Equity	Three Months Ended June 30, 2019 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - March 31, 2019 $ 50,180 $ 1,105,184 $ 701,325 $ ( 44,200 ) $ ( 17,310 ) $ 1,795,179 Net income (loss) — — ( 320,530 ) — 5,091 ( 315,439 ) Other comprehensive income (loss) — — — 1,670 157 1,827 Share-based compensation — 5,312 — — — 5,312 Issuance of common stock, net 99 — — — — 99 Contributions from noncontrolling interests — — — — 2,581 2,581 Balance - June 30, 2019 $ 50,279 $ 1,110,496 $ 380,795 $ ( 42,530 ) $ ( 9,481 ) $ 1,489,559 Six Months Ended June 30, 2019 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - December 31, 2018 $ 50,026 $ 1,102,919 $ 701,681 $ ( 45,449 ) $ ( 21,288 ) $ 1,787,889 Net income (loss) — — ( 320,886 ) — 10,169 ( 310,717 ) Other comprehensive income (loss) — — — 2,919 259 3,178 Share-based compensation — 10,095 — — — 10,095 Issuance of common stock, net 253 ( 2,518 ) — — — ( 2,265 ) Contributions from noncontrolling interests — — — — 5,379 5,379 Distributions to noncontrolling interests — — — — ( 4,000 ) ( 4,000 ) Balance - June 30, 2019 $ 50,279 $ 1,110,496 $ 380,795 $ ( 42,530 ) $ ( 9,481 ) $ 1,489,559 Three Months Ended June 30, 2018 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - March 31, 2018 $ 49,913 $ 1,087,164 $ 606,121 $ ( 43,596 ) $ ( 14,131 ) $ 1,685,471 Net income — — 24,883 — 3,013 27,896 Other comprehensive loss — — — ( 1,209 ) — ( 1,209 ) Share-based compensation — 6,872 — — — 6,872 Issuance of common stock, net 98 ( 162 ) — — — ( 64 ) Contributions from noncontrolling interests — — — — 1,000 1,000 Distributions to noncontrolling interests — — — — ( 7,500 ) ( 7,500 ) Balance - June 30, 2018 $ 50,011 $ 1,093,874 $ 631,004 $ ( 44,805 ) $ ( 17,618 ) $ 1,712,466 Six Months Ended June 30, 2018 Accumulated Additional Other Common Paid-in Retained Comprehensive Noncontrolling Total (in thousands) Stock Capital Earnings Loss Interests Equity Balance - December 31, 2017 $ 49,781 $ 1,084,205 $ 622,007 $ ( 42,718 ) $ ( 8,495 ) $ 1,704,780 Cumulative effect of accounting change — — ( 3,762 ) — ( 1,818 ) ( 5,580 ) Net income — — 12,759 — 4,195 16,954 Other comprehensive loss — — — ( 2,087 ) — ( 2,087 ) Share-based compensation — 12,271 — — — 12,271 Issuance of common stock, net 230 ( 2,602 ) — — — ( 2,372 ) Contributions from noncontrolling interests — — — — 1,000 1,000 Distributions to noncontrolling interests — — — — ( 12,500 ) ( 12,500 ) Balance - June 30, 2018 $ 50,011 $ 1,093,874 $ 631,004 $ ( 44,805 ) $ ( 17,618 ) $ 1,712,466

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2019
Other Comprehensive Income (Loss) [Abstract]
Schedule Of Tax Effects Of The Components Of Other Comprehensive Income (Loss)	The tax effects of the components of other comprehensive income (loss) for the three and six months ended June 30, 2019 and 2018 were as follows: Three Months Ended Three Months Ended June 30, 2019 June 30, 2018 (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 (loss): Defined benefit pension plan adjustments $ 464 $ ( 133 ) $ 331 $ 494 $ ( 140 ) $ 354 Foreign currency translation adjustments 1,072 ( 262 ) 810 ( 914 ) 280 ( 634 ) Unrealized gain (loss) in fair value of investments 867 ( 181 ) 686 ( 1,176 ) 247 ( 929 ) Total other comprehensive income (loss) 2,403 ( 576 ) 1,827 ( 1,596 ) 387 ( 1,209 ) Less: Other comprehensive income attributable to noncontrolling interests (a) 157 — 157 — — — Total other comprehensive income (loss) attributable to Tutor Perini Corporation $ 2,246 $ ( 576 ) $ 1,670 $ ( 1,596 ) $ 387 $ ( 1,209 ) (a) The only component of other comprehensive income attributable to noncontrolling interests is foreign currency translation. Six Months Ended Six Months Ended June 30, 2019 June 30, 2018 (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 (loss): Defined benefit pension plan adjustments $ 926 $ ( 265 ) $ 661 $ 1,026 $ ( 291 ) $ 735 Foreign currency translation adjustment 1,551 ( 393 ) 1,158 ( 2,553 ) 745 ( 1,808 ) Unrealized gain (loss) in fair value of investments 1,725 ( 366 ) 1,359 ( 1,295 ) 281 ( 1,014 ) Total other comprehensive income (loss) 4,202 ( 1,024 ) 3,178 ( 2,822 ) 735 ( 2,087 ) Less: Other comprehensive income (loss) attributable to noncontrolling interests (a) 259 — 259 — — — Total other comprehensive income (loss) attributable to Tutor Perini Corporation $ 3,943 $ ( 1,024 ) $ 2,919 $ ( 2,822 ) $ 735 $ ( 2,087 ) (a) The only component of other comprehensive income attributable to noncontrolling interests is foreign currency translation.
Schedule Of Changes In AOCI Balances By Component (After-Tax)	Three Months Ended June 30, 2019 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Fair Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of March 31, 2019 $ ( 38,340 ) $ ( 6,069 ) $ 209 $ ( 44,200 ) Other comprehensive income before reclassifications — 653 714 1,367 Amounts reclassified from AOCI 331 — ( 28 ) 303 Total other comprehensive income 331 653 686 1,670 Balance as of June 30, 2019 $ ( 38,009 ) $ ( 5,416 ) $ 895 $ ( 42,530 ) Six Months Ended June 30, 2019 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Fair Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of December 31, 2018 $ ( 38,670 ) $ ( 6,315 ) $ ( 464 ) $ ( 45,449 ) Other comprehensive income before reclassifications — 899 1,379 2,278 Amounts reclassified from AOCI 661 — ( 20 ) 641 Total other comprehensive income 661 899 1,359 2,919 Balance as of June 30, 2019 $ ( 38,009 ) $ ( 5,416 ) $ 895 $ ( 42,530 ) The changes in AOCI balances by component (after tax) attributable to Tutor Perini Corporation during the three and six months ended June 30, 2018 were as follows: Three Months Ended June 30, 2018 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Fair Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of March 31, 2018 $ ( 39,060 ) $ ( 4,765 ) $ 229 $ ( 43,596 ) Other comprehensive loss before reclassifications — ( 634 ) ( 929 ) ( 1,563 ) Amounts reclassified from AOCI 354 — — 354 Total other comprehensive income (loss) 354 ( 634 ) ( 929 ) ( 1,209 ) Balance as of June 30, 2018 $ ( 38,706 ) $ ( 5,399 ) $ ( 700 ) $ ( 44,805 ) Six Months Ended June 30, 2018 Defined Unrealized Accumulated Benefit Foreign Gain (Loss) in Other Pension Currency Value of Comprehensive (in thousands) Plan Translation Investments, Net Income (Loss) Attributable to Tutor Perini Corporation: Balance as of December 31, 2017 $ ( 39,441 ) $ ( 3,591 ) $ 314 $ ( 42,718 ) Other comprehensive loss before reclassifications — ( 1,808 ) ( 1,014 ) ( 2,822 ) Amounts reclassified from AOCI 735 — — 735 Total other comprehensive income (loss) 735 ( 1,808 ) ( 1,014 ) ( 2,087 ) Balance as of June 30, 2018 $ ( 38,706 ) $ ( 5,399 ) $ ( 700 ) $ ( 44,805 )

Business Segments (Tables)

Business Segments (Tables)	6 Months Ended
	Jun. 30, 2019
Business Segments [Abstract]
Reportable Segments	Reportable Segments Specialty Consolidated (in thousands) Civil Building Contractors Total Corporate Total Three Months Ended June 30, 2019 Total revenue $ 541,117 $ 433,559 $ 223,299 $ 1,197,975 $ — $ 1,197,975 Elimination of intersegment revenue ( 67,459 ) ( 5,241 ) — ( 72,700 ) — ( 72,700 ) Revenue from external customers $ 473,658 $ 428,318 $ 223,299 $ 1,125,275 $ — $ 1,125,275 Income (loss) from construction operations $ ( 164,472 ) $ ( 3,810 ) $ ( 159,795 ) $ ( 328,077 ) (a) $ ( 13,640 ) (b) $ ( 341,717 ) Capital expenditures $ 24,439 $ 150 $ 110 $ 24,699 $ 235 $ 24,934 Depreciation and amortization (c) $ 10,285 $ 497 $ 1,061 $ 11,843 $ 2,754 $ 14,597 Three Months Ended June 30, 2018 Total revenue $ 461,614 $ 447,975 $ 270,633 $ 1,180,222 $ — $ 1,180,222 Elimination of intersegment revenue ( 59,141 ) ( 996 ) — ( 60,137 ) — ( 60,137 ) Revenue from external customers $ 402,473 $ 446,979 $ 270,633 $ 1,120,085 $ — $ 1,120,085 Income (loss) from construction operations $ 49,439 $ 12,536 $ 7,454 $ 69,429 $ ( 14,614 ) (b) $ 54,815 Capital expenditures $ 27,352 $ 592 $ 215 $ 28,159 $ 174 $ 28,333 Depreciation and amortization (c) $ 6,569 $ 489 $ 1,106 $ 8,164 $ 2,813 $ 10,977 (a) During the three months ended June 30, 2019, the Company recorded a non-cash goodwill impairment charge of $ 379.9 million in income (loss) from continuing operations (an unfavorable after-tax impact of $ 329.5 million, or $ 6.56 per diluted share) resulting from an interim impairment test the Company performed as of June 1, 2019. (For further information and breakdown of the goodwill impairment charge by segment, see Note 8, Goodwill and Intangible Assets ). (b) Consists primarily of corporate general and administrative expenses. (c) Depreciation and amortization is included in income (loss) from construction operations. Reportable Segments Specialty Consolidated (in thousands) Civil Building Contractors Total Corporate Total Six Months Ended June 30, 2019 Total revenue $ 924,739 $ 869,802 $ 414,826 $ 2,209,367 $ — $ 2,209,367 Elimination of intersegment revenue ( 117,587 ) ( 8,018 ) — ( 125,605 ) — ( 125,605 ) Revenue from external customers $ 807,152 $ 861,784 $ 414,826 $ 2,083,762 $ — $ 2,083,762 Income (loss) from construction operations $ ( 122,727 ) $ ( 677 ) $ ( 167,283 ) $ ( 290,687 ) (a) $ ( 28,117 ) (b) $ ( 318,804 ) Capital expenditures $ 38,451 $ 205 $ 233 $ 38,889 $ 457 $ 39,346 Depreciation and amortization (c) $ 19,655 $ 1,000 $ 2,125 $ 22,780 $ 5,534 $ 28,314 Six Months Ended June 30, 2018 Total revenue $ 787,014 $ 938,592 $ 545,434 $ 2,271,040 $ — $ 2,271,040 Elimination of intersegment revenue ( 121,427 ) ( 1,372 ) — ( 122,799 ) — ( 122,799 ) Revenue from external customers $ 665,587 $ 937,220 $ 545,434 $ 2,148,241 $ — $ 2,148,241 Income (loss) from construction operations (d) $ 52,278 $ 18,961 $ 14,689 $ 85,928 $ ( 32,038 ) (b) $ 53,890 Capital expenditures $ 46,548 $ 870 $ 634 $ 48,052 $ 251 $ 48,303 Depreciation and amortization (c) $ 12,325 $ 970 $ 2,218 $ 15,513 $ 5,651 $ 21,164 (a) During the six months ended June 30, 2019, the Company recorded a non-cash goodwill impairment charge of $ 379.9 million in income (loss) from continuing operations (an unfavorable after-tax impact of $ 329.5 million, or $ 6.57 per diluted share) resulting from an interim impairment test the Company performed as of June 1, 2019. (For further information and breakdown of the goodwill impairment charge by segment, see Note 8, Goodwill and Intangible Assets). (b) Consists primarily of corporate general and administrative expenses. (c) Depreciation and amortization is included in income (loss) from construction operations. (d) During the six months ended June 30, 2018, the Company recorded a charge of $ 17.8 million in income from construction operations (an after-tax impact of $ 12.8 million, or $ 0.25 per diluted share), which was primarily non-cash, as a result of the unexpected outcome of an arbitration decision related to a subcontract back charge dispute on a Civil segment project in New York that was completed in 2013.
Reconciliation of Segment Results to Consolidated Income Before Income Taxes	Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Income (loss) from construction operations $ ( 341,717 ) $ 54,815 $ ( 318,804 ) $ 53,890 Other income, net 900 1,050 1,322 1,830 Interest expense ( 17,522 ) ( 15,998 ) ( 33,947 ) ( 31,063 ) Income (loss) before income taxes $ ( 358,339 ) $ 39,867 $ ( 351,429 ) $ 24,657
Schedule of Assets by Segment	As of As of (in thousands) June 30, 2019 December 31, 2018 Civil $ 2,545,572 $ 2,574,326 Building 961,287 913,746 Specialty Contractors 607,008 745,313 Corporate and other (a) 299,629 154,367 Total assets $ 4,413,496 $ 4,387,752 (a) Consists principally of cash, equipment, tax-related assets and insurance-related assets, offset by the elimination of assets related to intersegment revenue.

Recent Accounting Pronounceme_3

Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets	$ 92,896	$ 93,796	$ 50,523
Liabilities	45,993	43,300
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets		43,300
Reclassification [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other assets	$ 42,895	$ 43,273

Recent Accounting Pronounceme_4

Recent Accounting Pronouncements (Schedule of the Impact for the Adoption of ASU 842) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
ASSETS
Other assets	$ 92,896	$ 93,796	$ 50,523
LIABILITIES
Accrued expenses and other current liabilities	175,525	185,894	174,325
Other Long-term Liabilities	186,434	183,343	$ 151,639
Accounting Standards Update 2016-02 [Member]
ASSETS
Other assets		43,300
Accounting Standards Update 2016-02 [Member] | Balance Without Adoption Of ASC 842 [Member]
ASSETS
Other assets	50,001
LIABILITIES
Accrued expenses and other current liabilities	163,718
Other Long-term Liabilities	155,346
Accounting Standards Update 2016-02 [Member] | Reclassification [Member]
ASSETS
Other assets	42,895	43,273
LIABILITIES
Accrued expenses and other current liabilities	11,807	11,569
Other Long-term Liabilities	$ 31,088	$ 31,704

Revenue (Narrative) (Details)

Revenue (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Net revenue recognized related to performance obligations satisfied (or partially satisfied) in prior periods	$ (14.6)	$ (27.7)
Civil [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	5.5	$ 5.5	$ 4.3
Civil [Member] | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Range		3 years
Civil [Member] | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Range		5 years
Building [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	1.7	$ 1.7	2
Specialty Contractors [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 2.2	$ 2.2	$ 1.6
Building And Specialty Contractors [Member] | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Range		1 year
Building And Specialty Contractors [Member] | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Range		3 years

Revenue (Disaggregation Of Reve

Revenue (Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Contracts Revenue	$ 1,125,275	$ 1,120,085	$ 2,083,762	$ 2,148,241
Civil [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	473,658	402,473	807,152	665,587
Civil [Member] | Mass Transit [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	243,620	158,096	389,870	308,222
Civil [Member] | Bridges [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	86,467	120,929	155,774	183,739
Civil [Member] | Highways [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	60,244	65,809	101,287	83,066
Civil [Member] | Tunneling [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	29,586	23,931	64,526	32,632
Civil [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	53,741	33,708	95,695	57,928
Building [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	428,318	446,979	861,784	937,220
Building [Member] | Commercial And Industrial Facilities [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	118,564	59,318	227,917	233,066
Building [Member] | Health Care Facilities [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	60,796	118,116	141,023	193,197
Building [Member] | Municipal And Government [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	68,580	70,528	130,542	120,981
Building [Member] | Education Facilities [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	47,062	32,876	89,590	65,358
Building [Member] | Hospitality And Gaming [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	35,939	79,490	83,896	161,255
Building [Member] | Mass Transit [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	41,211	13,171	70,388	13,171
Building [Member] | Mixed Use [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	23,582	38,814	60,209	80,590
Building [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	32,584	34,666	58,219	69,602
Specialty Contractors [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	223,299	270,633	414,826	545,434
Specialty Contractors [Member] | Commercial And Industrial Facilities [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	43,618	48,952	87,641	88,291
Specialty Contractors [Member] | Health Care Facilities [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	9,248	14,623	20,899	30,988
Specialty Contractors [Member] | Education Facilities [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	14,036	26,298	25,616	51,602
Specialty Contractors [Member] | Mass Transit [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	100,016	78,169	181,411	153,351
Specialty Contractors [Member] | Mixed Use [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	18,036	51,976	28,705	99,833
Specialty Contractors [Member] | Transportation [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	3,726	22,019	10,161	56,004
Specialty Contractors [Member] | Multi-Unit Residential [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	19,225	22,761	30,614	45,850
Specialty Contractors [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	$ 15,394	$ 5,835	$ 29,779	$ 19,515

Revenue (Schedule Of Revenue By

Revenue (Schedule Of Revenue By Contract Type) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Contracts Revenue	$ 1,125,275	$ 1,120,085	$ 2,083,762	$ 2,148,241
Fixed Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	674,021	591,079	1,186,510	1,101,407
Guaranteed Maximum Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	194,009	291,005	406,981	573,685
Unit Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	139,268	139,451	248,377	223,679
Cost Plus Fee And Other [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	117,977	98,550	241,894	249,470
Civil [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	473,658	402,473	807,152	665,587
Civil [Member] | Fixed Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	349,945	259,927	592,811	443,830
Civil [Member] | Guaranteed Maximum Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	1,644	3,103	3,878	8,175
Civil [Member] | Unit Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	116,285	121,447	201,163	190,201
Civil [Member] | Cost Plus Fee And Other [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	5,784	17,996	9,300	23,381
Building [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	428,318	446,979	861,784	937,220
Building [Member] | Fixed Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	136,250	96,657	250,609	175,658
Building [Member] | Guaranteed Maximum Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	185,050	270,440	392,182	532,468
Building [Member] | Unit Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	2,800	10,771	8,028	19,588
Building [Member] | Cost Plus Fee And Other [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	104,218	69,111	210,965	209,506
Specialty Contractors [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	223,299	270,633	414,826	545,434
Specialty Contractors [Member] | Fixed Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	187,826	234,495	343,090	481,919
Specialty Contractors [Member] | Guaranteed Maximum Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	7,315	17,462	10,921	33,042
Specialty Contractors [Member] | Unit Price [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	20,183	7,233	39,186	13,890
Specialty Contractors [Member] | Cost Plus Fee And Other [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	7,975	11,443	21,629	16,583
State And Local Agencies [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	629,491	593,059	1,128,355	1,041,715
State And Local Agencies [Member] | Civil [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	381,438	327,195	638,545	553,546
State And Local Agencies [Member] | Building [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	133,798	159,556	278,484	275,541
State And Local Agencies [Member] | Specialty Contractors [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	114,255	106,308	211,326	212,628
Private Owners [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	421,648	429,003	810,193	935,613
Private Owners [Member] | Civil [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	65,241	44,506	118,470	71,414
Private Owners [Member] | Building [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	250,124	235,160	498,753	565,105
Private Owners [Member] | Specialty Contractors [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	106,283	149,337	192,970	299,094
Federal Agencies [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	74,136	98,023	145,214	170,913
Federal Agencies [Member] | Civil [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	26,979	30,772	50,137	40,627
Federal Agencies [Member] | Building [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	44,396	52,263	84,547	96,574
Federal Agencies [Member] | Specialty Contractors [Member]
Disaggregation of Revenue [Line Items]
Contracts Revenue	$ 2,761	$ 14,988	$ 10,530	$ 33,712

Contract Assets And Liabiliti_3

Contract Assets And Liabilities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Contract Assets and Liabilities [Abstract]
Capitalized contract costs were amortized and recognized as expense	$ 8.6	$ 4.1	$ 14.3	$ 8.2
Contract with Customer, Liability, Revenue Recognized	$ 289.4	$ 262.3	$ 391.9	$ 303.4

Contract Assets And Liabiliti_4

Contract Assets And Liabilities (Schedule Of Contract Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Contract Assets and Liabilities [Abstract]
Retainage receivable	$ 508,423	$ 478,744
Claims	752,712	698,274
Unapproved change orders	334,774	354,000
Other unbilled costs and profits	77,922	90,021
Total costs and estimated earnings in excess of billings	1,165,408	1,142,295
Capitalized contract costs	61,376	37,404
Total contract assets	$ 1,735,207	$ 1,658,443

Contract Assets And Liabiliti_5

Contract Assets And Liabilities (Schedule Of Contract Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Contract Assets and Liabilities [Abstract]
Retainage payable	$ 227,884	$ 211,956
Billings in excess of costs and estimated earnings	635,924	573,190
Total contract liabilities	$ 863,808	$ 785,146

Cash, Cash Equivalents And Re_3

Cash, Cash Equivalents And Restricted Cash (Reconciliation Of Cash, Cash Equivalents And Restricted Cash) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Cash, Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	$ 149,881	$ 116,075
Restricted cash	4,742	3,788
Total cash, cash equivalents and restricted cash	154,623	119,863	$ 142,003	$ 197,648
Tutor Perini Corporation [Member]
Cash, Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	64,668	51,749
Joint Venture [Member]
Cash, Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	$ 85,213	$ 64,326

Earnings Per Common Share (EP_3

Earnings Per Common Share (EPS) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Goodwill, Impairment Loss	$ 379,863	$ 0	$ 379,863	$ 0
Net income (loss)	$ (315,439)	$ 27,896	$ (310,717)	$ 16,954
Earnings Per Share, Diluted	$ (6.38)	$ 0.49	$ (6.40)	$ 0.25
Scenario Unfavorable Adjustment [Member]
Net income (loss)	$ 329,500		$ 329,500
Earnings Per Share, Diluted	$ 6.56		$ 6.57

Earnings Per Common Share (EP_4

Earnings Per Common Share (EPS) (Calculations of the Basic and Diluted EPS) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Common Share (EPS) [Abstract]
Net income (loss) attributable to Tutor Perini Corporation	$ (320,530)	$ 24,883	$ (320,886)	$ 12,759
Weighted-average common shares outstanding, basic	50,224	49,946	50,161	49,880
Effect of dilutive restricted stock units and stock options	0	494		247
Weighted-average common shares outstanding, diluted	50,224	50,440	50,161	50,127
Net income (loss) attributable to Tutor Perini Corporation per common share: Basic	$ (6.38)	$ 0.50	$ (6.40)	$ 0.26
Net income (loss) attributable to Tutor Perini Corporation per common share: Diluted	$ (6.38)	$ 0.49	$ (6.40)	$ 0.25
Anti-dilutive securities not included above	4,191	1,682	4,354	3,095

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Contingency [Line Items]
Effective income tax rate	12.00%	30.00%	11.60%	31.20%
Goodwill, Impairment Loss	$ 379,863	$ 0	$ 379,863	$ 0
Goodwill Yielding Permanent Differences Between Book Income And Taxable Income	209,500		209,500
Goodwill Impairment Tax Benefit	$ 50,400		50,400
Amount recorded as deferred tax asset / reduction of previously recorded deferred tax liability			$ 50,400
Excluding Impact Of Goodwill Impairment Charge [Member]
Income Tax Contingency [Line Items]
Effective income tax rate	34.70%		34.00%

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)segment	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)segment
Goodwill [Line Items]
Number of reportable segments | segment			3		3
Goodwill	$ 205,143		$ 205,143		$ 585,006
Goodwill, Impairment Loss	379,863	$ 0	379,863	$ 0
Amortization expense	900	$ 900	1,771	$ 1,771
Remainder of 2019	1,800		1,800
2020	3,500		3,500
2021	3,400		3,400
2022	2,600		2,600
2023	2,500		2,500
2024	2,500		2,500
Specialty Contractors [Member]
Goodwill [Line Items]
Goodwill	0		0		156,193
Goodwill, Impairment Loss	156,193
Civil [Member]
Goodwill [Line Items]
Goodwill	205,143		205,143		415,358
Goodwill, Impairment Loss	210,215
Building [Member]
Goodwill [Line Items]
Goodwill	0		$ 0		$ 13,455
Goodwill, Impairment Loss	$ 13,455

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Schedule of Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Goodwill
Gross Goodwill Balance					$ 1,072,991
Accumulated Impairment	$ (867,800)		$ (867,800)		(487,985)
Impairment charge	(379,863)	$ 0	(379,863)	$ 0
Goodwill	205,143		205,143		585,006
Civil [Member]
Goodwill
Gross Goodwill Balance					492,074
Accumulated Impairment					(76,716)
Impairment charge	(210,215)
Goodwill	205,143		205,143		415,358
Building [Member]
Goodwill
Gross Goodwill Balance					424,724
Accumulated Impairment					(411,269)
Impairment charge	(13,455)
Goodwill	0		0		13,455
Specialty Contractors [Member]
Goodwill
Gross Goodwill Balance					156,193
Accumulated Impairment					0
Impairment charge	(156,193)
Goodwill	$ 0		$ 0		$ 156,193

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Schedule of Indefinite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Trade Names [Member]
Indefinite-lived intangible assets
Cost	$ 117,600	$ 117,600
Accumulated Impairment Charge	(67,190)	(67,190)
Carrying Value	50,410	50,410
Contractor License [Member]
Indefinite-lived intangible assets
Cost	6,000	6,000
Accumulated Impairment Charge	(6,000)	(6,000)
Carrying Value	$ 0	$ 0

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived intangible assets
Cost	$ 311,456	$ 311,456
Accumulated Amortization	(114,249)	(112,478)
Accumulated Impairment Charge	(113,067)	(113,067)
Carrying Value	84,140	85,911
Trade Names [Member]
Finite-Lived intangible assets
Cost	74,350	74,350
Accumulated Amortization	(20,023)	(18,780)
Accumulated Impairment Charge	(23,232)	(23,232)
Carrying Value	$ 31,095	$ 32,338
Weighted Average Amortization Period	20 years	20 years
Customer Relationships [Member]
Finite-Lived intangible assets
Cost	$ 39,800	$ 39,800
Accumulated Amortization	(20,520)	(19,992)
Accumulated Impairment Charge	(16,645)	(16,645)
Carrying Value	$ 2,635	$ 3,163
Weighted Average Amortization Period	12 years	12 years
Construction Contract Backlog [Member]
Finite-Lived intangible assets
Cost	$ 73,706	$ 73,706
Accumulated Amortization	(73,706)	(73,706)
Accumulated Impairment Charge	0	0
Carrying Value	$ 0	$ 0

Financial Commitments (Narrativ

Financial Commitments (Narrative) (Details)	6 Months Ended
	Jun. 30, 2019USD ($)d / item$ / sharesshares	May 07, 2019	Dec. 31, 2018USD ($)
Senior Notes [Member] | Private Placement [Member] | 2017 Senior Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 500,000,000
Interest rate	6.875%
Redemption price, change of control triggering event (as a percent)	101.00%
Senior Notes [Member] | Circumstance One [Member] | Private Placement [Member] | 2017 Senior Notes [Member]
Debt Instrument [Line Items]
Redemption price	100.00%
Senior Notes [Member] | Circumstance Two [Member] | Private Placement [Member] | 2017 Senior Notes [Member]
Debt Instrument [Line Items]
Redemption price	106.875%
Percentage of notes that can be redeemed	40.00%
Convertible Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 200,000,000
Interest rate	2.875%
Maturity date	Jun. 15, 2021
Conversion price, principal amount	$ 1,000
Conversion price, shares | shares	33.0579
Conversion price | $ / shares	$ 30.25
Convertible Notes [Member] | Circumstance One [Member]
Debt Instrument [Line Items]
Business day period after consecutive trading day period	5 days
Consecutive trading day period | d / item	10
Conversion price, principal amount	$ 1,000
Percentage of conversion price	98.00%
Convertible Notes [Member] | Circumstance Two [Member]
Debt Instrument [Line Items]
Consecutive trading day period | d / item	30
Percentage of conversion price	130.00%
Business day period within consecutive trading day period | d / item	20
Conversion stock price trigger | $ / shares	$ 39.32
Conversion price, shares | shares	33.0579
Minimum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio	3.25
Maximum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio			3.50
Credit Facility [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 350,000,000
Available borrowing capacity	115,000,000
Additional borrowing	$ 150,000,000
Line of Credit Facility, Expiration Date	Apr. 20, 2022
Applicable margin and letter of credit fees will be increased percentage per annum.	2.00%
Weighted-average annual interest rate on borrowings	5.18%
Fixed charge coverage ratio	1.25
Debt issuance costs	$ 4,500,000		$ 4,800,000
Credit Facility [Member] | Letters Of Credit [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	150,000,000
Credit Facility [Member] | Swingline Loans [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Face amount	$ 10,000,000
Credit Facility [Member] | Minimum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio	3.25
Credit Facility [Member] | Maximum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio	4
Credit Facility [Member] | Maximum [Member] | Amendment To 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Consolidated leverage ratio		3.50
LIBOR [Member] | Credit Facility [Member] | Minimum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent))	1.50%
LIBOR [Member] | Credit Facility [Member] | Maximum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent))	3.00%
Base Rate [Member] | Credit Facility [Member] | Circumstance Three [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent))	1.00%
Base Rate [Member] | Credit Facility [Member] | Circumstance Four [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate	0.00%
Base Rate [Member] | Credit Facility [Member] | Minimum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent))	0.50%
Base Rate [Member] | Credit Facility [Member] | Maximum [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent))	2.00%
Federal Funds Rate [Member] | Credit Facility [Member] | Circumstance Two [Member] | 2017 Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent))	0.50%

Financial Commitments (Long-Ter

Financial Commitments (Long-Term Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 956,177	$ 761,504
Less: Current maturities	14,414	16,767
Long-term debt, net	941,763	744,737
Convertible Notes [Member]
Debt Instrument [Line Items]
Total debt	176,760	171,481
Equipment Financing And Mortgages [Member]
Debt Instrument [Line Items]
Total debt	42,961	50,904
Other Indebtedness [Member]
Debt Instrument [Line Items]
Total debt	7,521	4,598
2017 Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Total debt	493,935	493,521
2017 Credit Facility [Member] | Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	$ 235,000	$ 41,000

Financial Commitments (Reconcil

Financial Commitments (Reconciliation Of Outstanding Debt Balance To Reported Debt Balance) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Unamortized Discount and Issuance Costs	$ (29,305)	$ (34,998)
Total debt	956,177	761,504
Convertible Notes [Member]
Debt Instrument [Line Items]
Outstanding Long-Term Debt	200,000	200,000
Unamortized Discount and Issuance Costs	(23,240)	(28,519)
Total debt	176,760	171,481
2017 Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Outstanding Long-Term Debt	500,000	500,000
Unamortized Discount and Issuance Costs	(6,065)	(6,479)
Total debt	$ 493,935	$ 493,521

Financial Commitments (Summary

Financial Commitments (Summary Of Interest Expense As Reported In The Condensed Consolidated Statements of Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Debt Instrument [Line Items]
Interest on debt	$ 14,255	$ 13,011	$ 27,505	$ 25,149
Other interest	541	626	1,116	1,383
Total non-cash interest expense	3,267	2,987	6,442	5,914
Total interest expense	17,522	15,998	33,947	31,063
Convertible Notes [Member]
Debt Instrument [Line Items]
Interest on debt	1,438	1,437	2,875	2,875
Total non-cash interest expense	$ 2,671	2,432	$ 5,279	4,808
Effective interest rates	9.39%		9.39%
2017 Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest on debt	$ 8,594	8,594	$ 17,187	17,187
Total non-cash interest expense	$ 209	195	$ 414	386
Effective interest rates	7.13%		7.13%
2017 Credit Facility [Member] | Credit Facility [Member]
Debt Instrument [Line Items]
Interest on debt	$ 3,682	2,354	$ 6,327	3,704
Total non-cash interest expense	$ 387	$ 360	$ 749	$ 720

Leases (Narrative) (Details)

Leases (Narrative) (Details)	Jun. 30, 2019
Maximum [Member]
Lessee, Lease, Description [Line Items]
Operating lease, remaining lease terms	10 years
Minimum [Member]
Lessee, Lease, Description [Line Items]
Operating lease, remaining lease terms	1 year

Leases (Components of Lease Exp

Leases (Components of Lease Expense) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 3,921	$ 7,702
Short-term lease expense	16,486	33,057
Lease expense, gross	20,407	40,759
Less: Sublease income	262	521
Total lease expense	$ 20,145	$ 40,238
Maximum [Member]
Lessee, Lease, Description [Line Items]
Short-term lease, lease term		1 year
Minimum [Member]
Lessee, Lease, Description [Line Items]
Short-term lease, lease term		1 month

Leases (Supplemental Balance Sh

Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Leases [Abstract]
ROU assets	$ 42,968
Current lease liabilities	11,991
Long-term lease liabilities	34,002
Total	$ 45,993	$ 43,300
Weighted average remaining lease term (in years)	4 years 8 months 12 days
Weighted-average discount rate	5.85%

Leases (Supplemental Cash Flow

Leases (Supplemental Cash Flow And Other Information Related To Leases) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Leases [Abstract]
Cash paid for amount included in the measurement of lease liabilities	$ (7,622)
ROU assets obtained in exchange for lease liabilities	$ 6,040

Leases (Maturity of Leases Liab

Leases (Maturity of Leases Liabilities on an Undiscounted Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Leases [Abstract]
2019 (excluding the six months ended June 30, 2019)	$ 7,442
2020	11,987
2021	8,595
2022	7,346
2023	6,129
Thereafter	12,431
Total lease payments	53,930
Less: Imputed interest	7,937
Total	$ 45,993	$ 43,300

Leases (Future Minimum Rent Pay

Leases (Future Minimum Rent Payments under Non-Cancelable Operating Leases) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 14,039
2020	10,706
2021	7,464
2022	6,567
2023	5,587
Thereafter	11,662
Subtotal	56,025
Less: Sublease rental agreements	1,398
Total	$ 54,627

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) $ in Thousands

1 Months Ended

6 Months Ended

Mar. 31, 2016USD ($)

Jun. 30, 2015USD ($)

Oct. 31, 2013USD ($)

Mar. 31, 2012USD ($)

Jan. 31, 2010USD ($)

Jun. 30, 2009USD ($)room

Jun. 30, 2019USD ($)

Jun. 30, 2018USD ($)

May 31, 2012USD ($)

Sep. 30, 2011USD ($)

May 31, 2010USD ($)

Feb. 28, 2006USD ($)

Loss Contingencies [Line Items]

Proceeds from sale of property and equipment

$ 3,629

$ 4,120

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

$ 50,700

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

Proceeds from sale of property and equipment

$ 85,000

$ 150,000

Total outstanding liens on property, including subcontractors' liens

$ 44,000

Fontainebleau Matter [Member] | Other Unaffiliated Contractors Subcontractors And Suppliers [Member]

Loss Contingencies [Line Items]

Total outstanding liens on property, including subcontractors' liens

$ 550,000

Alaska Way Viaduct Matter [Member]

Loss Contingencies [Line Items]

Value of claim filed

$ 57,200

$ 532,000

Value of counterclaim filed

$ 667,000

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-Based Compensation [Line Items]
Number of shares available for grant	1,553,243		1,553,243
Share-based compensation expense	$ 4,600,000	$ 6,000,000	$ 10,078,000	$ 12,063,000
Unamortized share-based compensation expense	$ 22,600,000		$ 22,600,000
Weighted average period over which unrecognized compensation cost is expected to be recognized			1 year 9 months 18 days
Restricted Stock Units [Member]
Share-Based Compensation [Line Items]
Units granted			175,000	614,000
Weighted-average per share prices			$ 20.41	$ 25.19
Stock Options [Member]
Share-Based Compensation [Line Items]
Stock options awarded			85,000	579,000
Weighted-average exercise prices			$ 25.62	$ 23.73
Stock options expired			750,000
Weighted-average exercise prices, expired			$ 20.33
Weighted average grant date fair value			$ 7.57	$ 11.45
Expected life			5 years 4 months 24 days
Expected volatility			36.63%
Risk-free rate			2.66%
Quarterly dividends			$ 0
Unrestricted Stock Units [Member]
Share-Based Compensation [Line Items]
Units granted			98,591	115,420
Weighted-average per share prices			$ 15.72	$ 21.26

Employee Pension Plans (Compone

Employee Pension Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Summary of net periodic benefit cost
Interest cost	$ 948	$ 883	$ 1,896	$ 1,766
Expected return on plan assets	(1,043)	(1,077)	(2,086)	(2,154)
Amortization of net loss	463	513	926	1,026
Other	225	213	450	426
Net periodic benefit cost	593	$ 532	1,186	1,064
Company contribution			2,000	$ 1,400
Expected contributions remainder of current fiscal year	$ 2,600		$ 2,600

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Convertible Notes [Member]
Long-term Debt
Long-term debt, fair value	$ 188.5	$ 184.4
2017 Senior Notes [Member] | Senior Notes [Member]
Long-term Debt
Long-term debt, fair value	$ 475.9	$ 466.8

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Municipal Bonds [Member]
Assets:
Investments in lieu of retainage	$ 1,200	$ 1,200
Money Market Funds [Member]
Assets:
Investments in lieu of retainage	71,800	62,900
US Government Agencies Debt Securities [Member]
Assets:
Restricted and other investments	28,300	27,700
Corporate Debt Securities [Member]
Assets:
Restricted and other investments	37,000	30,400
Fair Value Measured On A Recurring Basis [Member]
Assets:
Cash and cash equivalents	149,881	116,075
Restricted cash	4,742	3,788
Restricted investments	65,287	58,142
Investments in lieu of retainage	73,014	64,048
Total assets	292,924	242,053
Fair Value Measured On A Recurring Basis [Member] | Quoted Prices In Active Markets (Level 1) [Member]
Assets:
Cash and cash equivalents	149,881	116,075
Restricted cash	4,742	3,788
Investments in lieu of retainage	71,828	62,858
Total assets	226,451	182,721
Fair Value Measured On A Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Restricted investments	65,287	58,142
Investments in lieu of retainage	1,186	1,190
Total assets	$ 66,473	$ 59,332
Maximum [Member]
Assets:
Restricted And other investments, term	5 years

Variable Interest Entities (V_2

Variable Interest Entities (VIEs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Variable Interest Entity [Line Items]
Assets, Current	$ 3,528,642		$ 3,528,642		$ 3,175,643
Liabilities, Current	1,739,492		1,739,492		1,597,966
REVENUE	1,125,275	$ 1,120,085	2,083,762	$ 2,148,241
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets, Current	249,600		249,600		173,900
Assets, Noncurrent	56,100		56,100		51,500
Liabilities, Current	368,000		$ 368,000		319,900
Parsons Corporation (“Parsons”) [Member] | Newark Airport Terminal One Design-Build Project [Member]
Variable Interest Entity [Line Items]
Percent interest in the joint venture			80.00%
Noncontrolling interest party's ownership percentage			20.00%
Parsons Corporation (“Parsons”) [Member] | Newark Airport Terminal One Design-Build Project [Member] | Plan [Member]
Variable Interest Entity [Line Items]
REVENUE			$ 1,400,000
O&G [Member] | Purple Line Segment 2 Expansion Project [Member]
Variable Interest Entity [Line Items]
Related party's ownership percentage in joint venture			25.00%
Percent interest in the joint venture			75.00%
O&G [Member] | Purple Line Extension Section 2 And Section 3 [Member] | Plan [Member]
Variable Interest Entity [Line Items]
REVENUE			$ 2,800,000
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets, Current	1,900		1,900		4,000
Liabilities, Current	$ 1,600		$ 1,600		$ 3,800

Changes in Equity (Details)

Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	$ 1,795,179	$ 1,685,471	$ 1,787,889	$ 1,704,780
Cumulative effect of accounting change		(5,580)		(5,580)
Net income (loss)	(315,439)	27,896	(310,717)	16,954
Other comprehensive income (loss)	1,827	(1,209)	3,178	(2,087)
Share-based compensation	5,312	6,872	10,095	12,271
Issuance of common stock, net	99	(64)	(2,265)	(2,372)
Contributions from noncontrolling interests	2,581	1,000	5,379	1,000
Distributions to noncontrolling interests		(7,500)	(4,000)	(12,500)
Balance at the end of the period	1,489,559	1,712,466	1,489,559	1,712,466
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	50,180	49,913	50,026	49,781
Issuance of common stock, net	99	98	253	230
Balance at the end of the period	50,279	50,011	50,279	50,011
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	1,105,184	1,087,164	1,102,919	1,084,205
Share-based compensation	5,312	6,872	10,095	12,271
Issuance of common stock, net		(162)	(2,518)	(2,602)
Balance at the end of the period	1,110,496	1,093,874	1,110,496	1,093,874
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	701,325	606,121	701,681	622,007
Cumulative effect of accounting change		(3,762)		(3,762)
Net income (loss)	(320,530)	24,883	(320,886)	12,759
Balance at the end of the period	380,795	631,004	380,795	631,004
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(44,200)	(43,596)	(45,449)	(42,718)
Other comprehensive income (loss)	1,670	(1,209)	2,919	(2,087)
Balance at the end of the period	(42,530)	(44,805)	(42,530)	(44,805)
Noncontrolling Interests [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(17,310)	(14,131)	(21,288)	(8,495)
Cumulative effect of accounting change		(1,818)		(1,818)
Net income (loss)	5,091	3,013	10,169	4,195
Other comprehensive income (loss)	157		259
Contributions from noncontrolling interests	2,581	1,000	5,379	1,000
Distributions to noncontrolling interests		(7,500)	(4,000)	(12,500)
Balance at the end of the period	$ (9,481)	$ (17,618)	$ (9,481)	$ (17,618)

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) (Schedule Of Tax Effects Of The Components Of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Comprehensive Income (Loss) [Abstract]
Defined benefit pension plan adjustments, Before-Tax Amount	$ 464	$ 494	$ 926	$ 1,026
Defined benefit pension plan adjustments, Tax (Expense) Benefit	(133)	(140)	(265)	(291)
Defined benefit pension plan adjustments, Net-of-Tax Amount	331	354	661	735
Foreign currency translation adjustments, Before-Tax Amount	1,072	(914)	1,551	(2,553)
Foreign currency translation adjustments, Tax (Expense) Benefit	(262)	280	(393)	745
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total	810	(634)	1,158	(1,808)
Unrealized gain (loss) in fair value of investments, Before-Tax Amount	867	(1,176)	1,725	(1,295)
Unrealized gain (loss) in fair value of investments, Tax (Expense) Benefit	(181)	247	(366)	281
Unrealized gain (loss) in fair value of investments, Net-of-Tax Amount	686	(929)	1,359	(1,014)
Total other comprehensive income (loss), Before-Tax Amount	2,403	(1,596)	4,202	(2,822)
Total other comprehensive income (loss), Tax (Expense) Benefit	(576)	387	(1,024)	735
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	1,827	(1,209)	3,178	(2,087)
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Before-of-Tax Amount	157	0	259	0
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Tax (Expense) Benefit	0	0	0	0
Less: Other comprehensive income (loss) attributable to noncontrolling interests, Net-of-Tax Amount	157	0	259	0
Total other comprehensive income (loss) attributable to Tutor Perini Corporation, Before-Tax Amount	2,246	(1,596)	3,943	(2,822)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation, Tax (Expense) Benefit	(576)	387	(1,024)	735
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	$ 1,670	$ (1,209)	$ 2,919	$ (2,087)

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) (Schedule Of Changes In AOCI Balances By Component (After-Tax)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period			$ 1,809,177
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	$ 1,670	$ (1,209)	2,919	$ (2,087)
Balance at the end of the period	1,499,040		1,499,040
Defined Benefit Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(38,340)	(39,060)	(38,670)	(39,441)
Other comprehensive loss before reclassifications	0	0	0	0
Amounts reclassified from AOCI	331	354	661	735
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	331	354	661	735
Balance at the end of the period	(38,009)	(38,706)	(38,009)	(38,706)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(6,069)	(4,765)	(6,315)	(3,591)
Other comprehensive loss before reclassifications	653	(634)	899	(1,808)
Amounts reclassified from AOCI	0	0	0	0
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	653	(634)	899	(1,808)
Balance at the end of the period	(5,416)	(5,399)	(5,416)	(5,399)
Unrealized Gain (Loss) in Fair Value of Investments, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	209	229	(464)	314
Other comprehensive loss before reclassifications	714	(929)	1,379	(1,014)
Amounts reclassified from AOCI	(28)	0	(20)	0
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	686	(929)	1,359	(1,014)
Balance at the end of the period	895	(700)	895	(700)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at the beginning of the period	(44,200)	(43,596)	(45,449)	(42,718)
Other comprehensive loss before reclassifications	1,367	(1,563)	2,278	(2,822)
Amounts reclassified from AOCI	303	354	641	735
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	1,670	(1,209)	2,919	(2,087)
Balance at the end of the period	$ (42,530)	$ (44,805)	$ (42,530)	$ (44,805)

Business Segments (Narrative) (

Business Segments (Narrative) (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019USD ($)$ / shares	Jun. 30, 2018USD ($)$ / shares	Jun. 30, 2019USD ($)segment$ / shares	Jun. 30, 2018USD ($)$ / shares	Dec. 31, 2018segment
Segment Reporting Information [Line Items]
Number of reportable segments | segment			3		3
Operating Income (Loss)	$ (341,717)	$ 54,815	$ (318,804)	$ 53,890
Net income (loss)	$ (315,439)	$ 27,896	$ (310,717)	$ 16,954
DILUTED EARNGINS (LOSS) PER COMMON SHARE | $ / shares	$ (6.38)	$ 0.49	$ (6.40)	$ 0.25
Scenario Unfavorable Adjustment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 379,900		$ 379,900
Net income (loss)	$ 329,500		$ 329,500
DILUTED EARNGINS (LOSS) PER COMMON SHARE | $ / shares	$ 6.56		$ 6.57
Building [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ (3,810)	$ 12,536	$ (677)	$ 18,961
Civil [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	(164,472)	49,439	(122,727)	52,278
Civil [Member] | Scenario Unfavorable Adjustment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)				17,800
Net income (loss)				$ 12,800
DILUTED EARNGINS (LOSS) PER COMMON SHARE | $ / shares				$ 0.25
Specialty Contractors [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	(159,795)	7,454	(167,283)	$ 14,689
Corporate [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ (13,640)	$ (14,614)	$ (28,117)	$ (32,038)

Business Segments (Reportable S

Business Segments (Reportable Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Segments [Line items]
Revenue	$ 1,125,275	$ 1,120,085	$ 2,083,762	$ 2,148,241
Income (loss) from construction operations	(341,717)	54,815	(318,804)	53,890
Capital expenditures	24,934	28,333	39,346	48,303
Depreciation and amortization	14,597	10,977	28,314	21,164
External And Intersegment Customers [Member]
Business Segments [Line items]
Revenue	1,197,975	1,180,222	2,209,367	2,271,040
Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(72,700)	(60,137)	(125,605)	(122,799)
Reportable Segments [Member]
Business Segments [Line items]
Revenue	1,125,275	1,120,085	2,083,762	2,148,241
Income (loss) from construction operations	(328,077)	69,429	(290,687)	85,928
Capital expenditures	24,699	28,159	38,889	48,052
Depreciation and amortization	11,843	8,164	22,780	15,513
Reportable Segments [Member] | External And Intersegment Customers [Member]
Business Segments [Line items]
Revenue	1,197,975	1,180,222	2,209,367	2,271,040
Reportable Segments [Member] | Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(72,700)	(60,137)	(125,605)	(122,799)
Civil [Member]
Business Segments [Line items]
Revenue	473,658	402,473	807,152	665,587
Income (loss) from construction operations	(164,472)	49,439	(122,727)	52,278
Capital expenditures	24,439	27,352	38,451	46,548
Depreciation and amortization	10,285	6,569	19,655	12,325
Civil [Member] | External And Intersegment Customers [Member]
Business Segments [Line items]
Revenue	541,117	461,614	924,739	787,014
Civil [Member] | Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(67,459)	(59,141)	(117,587)	(121,427)
Building [Member]
Business Segments [Line items]
Revenue	428,318	446,979	861,784	937,220
Income (loss) from construction operations	(3,810)	12,536	(677)	18,961
Capital expenditures	150	592	205	870
Depreciation and amortization	497	489	1,000	970
Building [Member] | External And Intersegment Customers [Member]
Business Segments [Line items]
Revenue	433,559	447,975	869,802	938,592
Building [Member] | Elimination Of Intersegment Revenues [Member]
Business Segments [Line items]
Revenue	(5,241)	(996)	(8,018)	(1,372)
Specialty Contractors [Member]
Business Segments [Line items]
Revenue	223,299	270,633	414,826	545,434
Income (loss) from construction operations	(159,795)	7,454	(167,283)	14,689
Capital expenditures	110	215	233	634
Depreciation and amortization	1,061	1,106	2,125	2,218
Specialty Contractors [Member] | External And Intersegment Customers [Member]
Business Segments [Line items]
Revenue	223,299	270,633	414,826	545,434
Corporate [Member]
Business Segments [Line items]
Income (loss) from construction operations	(13,640)	(14,614)	(28,117)	(32,038)
Capital expenditures	235	174	457	251
Depreciation and amortization	$ 2,754	$ 2,813	$ 5,534	$ 5,651

Business Segments (Reconciliati

Business Segments (Reconciliation of Segment Results to Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Segments [Abstract]
Income (loss) from construction operations	$ (341,717)	$ 54,815	$ (318,804)	$ 53,890
Other income, net	900	1,050	1,322	1,830
Interest expense	(17,522)	(15,998)	(33,947)	(31,063)
INCOME (LOSS) BEFORE INCOME TAXES	$ (358,339)	$ 39,867	$ (351,429)	$ 24,657

Business Segments (Schedule of

Business Segments (Schedule of Assets by Segment) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Reportable segment information
Total Assets	$ 4,413,496	$ 4,387,752
Civil [Member]
Reportable segment information
Total Assets	2,545,572	2,574,326
Building [Member]
Reportable segment information
Total Assets	961,287	913,746
Specialty Contractors [Member]
Reportable segment information
Total Assets	607,008	745,313
Corporate and Other [Member]
Reportable segment information
Total Assets	$ 299,629	$ 154,367