EMCOR (EME) 10-Q 27 Jul 17 2017 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 24, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Entity Registrant Name	EMCOR GROUP INC
Entity Central Index Key	105,634
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		59,178,554

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 385,396	$ 464,617
Accounts receivable, net	1,501,036	1,495,431
Costs and estimated earnings in excess of billings on uncompleted contracts	132,224	130,697
Inventories	42,451	37,426
Prepaid expenses and other	38,729	40,944
Total current assets	2,099,836	2,169,115
Investments, notes and other long-term receivables	7,722	8,792
Property, plant and equipment, net	127,754	127,951
Goodwill	1,010,399	979,628
Identifiable intangible assets, net	509,341	487,398
Other assets	92,522	79,554
Total assets	3,847,574	3,852,438
Current liabilities:
Current maturities of long-term debt and capital lease obligations	15,318	15,030
Accounts payable	469,318	501,213
Billings in excess of costs and estimated earnings on uncompleted contracts	523,115	489,242
Accrued payroll and benefits	271,438	310,514
Other accrued expenses and liabilities	189,668	195,775
Total current liabilities	1,468,857	1,511,774
Borrowings under revolving credit facility	125,000	125,000
Long-term debt and capital lease obligations	276,866	283,296
Other long-term obligations	397,922	394,426
Total liabilities	2,268,645	2,314,496
EMCOR Group, Inc. stockholders' equity:
Preferred stock, $0.10 par value, 1,000,000 shares authorized, zero issued and outstanding	0	0
Common stock, $0.01 par value, 200,000,000 shares authorized, 59,831,304 and 60,606,825 shares issued, respectively	598	606
Capital surplus	662	52,219
Accumulated other comprehensive loss	(101,160)	(101,703)
Retained earnings	1,688,278	1,596,269
Treasury stock, at cost 659,841 shares	(10,302)	(10,302)
Total EMCOR Group, Inc. stockholders' equity	1,578,076	1,537,089
Noncontrolling interests	853	853
Total equity	1,578,929	1,537,942
Total liabilities and equity	$ 3,847,574	$ 3,852,438

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value (in US dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in US dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	59,831,304	60,606,825
Treasury stock, shares	659,841	659,841

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenues	$ 1,895,937	$ 1,933,416	$ 3,787,669	$ 3,678,386
Cost of sales	1,621,436	1,658,675	3,246,828	3,180,537
Gross profit	274,501	274,741	540,841	497,849
Selling, general and administrative expenses	181,337	181,811	364,338	349,213
Restructuring expenses	343	641	908	732
Operating income	92,821	92,289	175,595	147,904
Interest expense	(3,069)	(3,118)	(6,140)	(5,494)
Interest income	73	192	330	357
Income from continuing operations before income taxes	89,825	89,363	169,785	142,767
Income tax provision	33,019	32,911	59,865	51,880
Income from continuing operations	56,806	56,452	109,920	90,887
Loss from discontinued operation, net of income taxes	(18)	(1,097)	(522)	(1,178)
Net income including noncontrolling interests	56,788	55,355	109,398	89,709
Less: Net (income) loss attributable to noncontrolling interests	(30)	25	0	19
Net income attributable to EMCOR Group, Inc. (in US dollars)	$ 56,758	$ 55,380	$ 109,398	$ 89,728
Basic earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$ 0.96	$ 0.93	$ 1.85	$ 1.49
From discontinued operation (in US dollars per share)	0	(0.02)	(0.01)	(0.02)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.96	0.91	1.84	1.47
Diluted earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.95	0.92	1.84	1.48
From discontinued operation (in US dollars per share)	0	(0.02)	(0.01)	(0.02)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.95	0.90	1.83	1.46
Dividends declared per common share (in US dollars per share)	$ 0.08	$ 0.08	$ 0.16	$ 0.16

Condensed Consolidated Stateme5

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interests		$ 56,788	$ 55,355	$ 109,398	$ 89,709
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		(577)	(754)	(691)	(801)
Post retirement plans, amortization of actuarial loss included in net income	[1]	625	476	1,234	953
Other comprehensive income (loss)		48	(278)	543	152
Comprehensive income		56,836	55,077	109,941	89,861
Less: Comprehensive (income) loss attributable to noncontrolling interests		(30)	25	0	19
Comprehensive income attributable to EMCOR Group, Inc.		$ 56,806	$ 55,102	$ 109,941	$ 89,880
[1]	Net of tax of $0.2 million and $0.1 million for the three months ended June 30, 2017 and 2016, respectively, and net of tax of $0.3 million for the six months ended June 30, 2017 and 2016.

Condensed Consolidated Stateme6

Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Post retirement plans, amortization of actuarial loss included in net income, tax	$ 0.2	$ 0.1	$ 0.3	$ 0.3

Condensed Consolidated Stateme7

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows - operating activities:
Net income including noncontrolling interests	$ 109,398	$ 89,709
Depreciation and amortization	20,354	19,265
Amortization of identifiable intangible assets	24,257	20,011
Provision for doubtful accounts	2,543	4,478
Deferred income taxes	(6,410)	1,734
Excess tax benefits from share-based compensation	(1,554)	(1,818)
Equity income from unconsolidated entities	(758)	(160)
Other non-cash items	2,208	5,565
Distributions from unconsolidated entities	1,829	863
Changes in operating assets and liabilities, excluding the effect of businesses acquired	(48,978)	(91,862)
Net cash provided by operating activities	102,889	47,785
Cash flows - investing activities:
Payments for acquisitions of businesses, net of cash acquired	(82,724)	(232,283)
Proceeds from sale of property, plant and equipment	1,629	909
Purchase of property, plant and equipment	(17,668)	(18,950)
Net cash used in investing activities	(98,763)	(250,324)
Cash flows - financing activities:
Proceeds from revolving credit facility	0	220,000
Repayments of long-term debt	(7,601)	(8,756)
Repayments of capital lease obligations	(716)	(816)
Dividends paid to stockholders	(9,531)	(9,734)
Repurchase of common stock	(65,775)	(34,074)
Proceeds from exercise of stock options	0	144
Payments to satisfy minimum tax withholding	(2,637)	(4,111)
Issuance of common stock under employee stock purchase plan	2,191	2,383
Payments for contingent consideration arrangements	(1,017)	0
Distributions to noncontrolling interests	0	(2,050)
Net cash (used in) provided by financing activities	(85,086)	162,986
Effect of exchange rate changes on cash and cash equivalents	1,739	(4,259)
Decrease in cash and cash equivalents	(79,221)	(43,812)
Cash and cash equivalents at beginning of year	464,617	486,831
Cash and cash equivalents at end of period	385,396	443,019
Cash paid for:
Interest	5,600	4,662
Income taxes	67,652	69,555
Non-cash financing activities:
Assets acquired under capital lease obligations	$ 688	$ 1,402

Condensed Consolidated Stateme8

Condensed Consolidated Statements Of Equity - USD ($) $ in Thousands		Total	Common Stock [Member]	Capital Surplus [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	[1]	Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2015		$ 1,480,056	$ 617	$ 130,369	$ (76,953)		$ 1,432,980	$ (10,302)	$ 3,345
Net income including noncontrolling interests		89,709					89,728		(19)
Other comprehensive income		152			152
Common stock issued under share-based compensation plans	[2]	1,135	3	141			991
Tax withholding for common stock issued under share-based compensation plans		(4,111)		(4,111)
Common stock issued under employee stock purchase plan		2,383		2,383
Common stock dividends		(9,734)					(9,836)
Common stock dividends, accrued dividend shares				102
Repurchase of common stock		(26,076)	(6)	(26,070)
Distributions to noncontrolling interests		(2,050)							(2,050)
Share-based compensation expense		5,035		5,035
Balance at Jun. 30, 2016		1,536,499	614	107,849	(76,801)		1,513,863	(10,302)	1,276
Balance at Dec. 31, 2016		1,537,942	606	52,219	(101,703)		1,596,269	(10,302)	853
Net income including noncontrolling interests		109,398					109,398		0
Other comprehensive income		543			543
Common stock issued under share-based compensation plans		1	2	(1)
Tax withholding for common stock issued under share-based compensation plans		(3,354)		(3,354)
Common stock issued under employee stock purchase plan		2,191		2,191
Common stock dividends		(9,531)					(9,615)
Common stock dividends, accrued dividend shares				84
Repurchase of common stock		(63,430)	(10)	(55,646)			(7,774)
Distributions to noncontrolling interests		0							0
Share-based compensation expense		5,169		5,169
Balance at Jun. 30, 2017		$ 1,578,929	$ 598	$ 662	$ (101,160)		$ 1,688,278	$ (10,302)	$ 853
[1]	Represents cumulative foreign currency translation adjustments and post retirement liability adjustments.
[2]	Includes a $1.0 million adjustment to retained earnings to recognize net operating loss carryforwards attributable to excess tax benefits on stock compensation upon the adoption of Accounting Standards Update No. 2016-09.

Condensed Consolidated Stateme9

Condensed Consolidated Statements Of Equity (Parenthetical) $ in Millions	6 Months Ended
	Jun. 30, 2016USD ($)
Accounting Standards Update 2016-09 [Member]
Cumulative effect on retained earnings, net of tax	$ 1

Basis Of Presentation

Basis Of Presentation	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with instructions to the Quarterly Report on Form 10-Q and Rule 10-01 of Regulation S-X. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted. References to the “Company,” “EMCOR,” “we,” “us,” “our” and similar words refer to EMCOR Group, Inc. and its consolidated subsidiaries unless the context indicates otherwise. Readers of this report should refer to the consolidated financial statements and the notes thereto included in our latest Annual Report on Form 10-K filed with the Securities and Exchange Commission. In our opinion, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting only of those of a normal recurring nature) necessary to present fairly our financial position and the results of our operations. The results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results to be expected for the year ending December 31, 2017 .

New Accounting Pronouncements

New Accounting Pronouncements	6 Months Ended
	Jun. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements On January 1, 2017, we adopted the accounting pronouncement issued by the Financial Accounting Standards Board (“FASB”)to simplify the presentation of deferred income taxes within the balance sheet. This pronouncement eliminates the requirement that deferred tax assets and liabilities are presented as current or noncurrent based on the nature of the underlying assets and liabilities. Instead, the pronouncement requires that all deferred tax assets and liabilities, including valuation allowances, be classified as noncurrent. We adopted this pronouncement on a retrospective basis. As a result of such adoption, approximately $41.7 million of net deferred tax assets, which were previously presented as “Prepaid expenses and other” in the Condensed Consolidated Balance Sheet as of December 31, 2016, were reclassified as a reduction to “Other long-term obligations.” On January 1, 2017, we adopted the accounting pronouncement issued by the FASB to simplify the accounting for goodwill impairment. This guidance eliminates the requirement that an entity calculate the implied fair value of goodwill when measuring an impairment charge. Instead, an entity would record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value. We adopted this pronouncement on a prospective basis. The adoption of this guidance did not have a material impact on our financial position and/or results of operations. In February 2016, an accounting pronouncement was issued by the FASB to replace existing lease accounting guidance. This pronouncement is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet for most leases. Expenses associated with leases will continue to be recognized in a manner similar to current accounting guidance. This pronouncement is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted. The adoption is required to be applied on a modified retrospective basis for each prior reporting period presented. We have not yet determined the effect that the adoption of this pronouncement may have on our financial position and/or results of operations. In May 2014, an accounting pronouncement was issued by the FASB to clarify existing guidance on revenue recognition. This guidance includes the required steps to achieve the core principle that a company should recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. This pronouncement is effective for fiscal years and interim periods beginning after December 15, 2017, with early adoption permitted. The guidance permits the use of one of two retrospective transition methods. We anticipate adopting the standard on January 1, 2018 using the modified retrospective method. We have substantially completed the process to evaluate the impact of the new pronouncement on our contracts, including identifying potential differences that will result from applying the requirements of the new guidance. As a result of the review of our various types of revenue arrangements, we do not anticipate that the adoption will have a material impact on our financial position and/or results of operations, particularly as it relates to revenues generated from long-term construction, service maintenance, and time and materials contracts. However, our initial conclusion may change as we finalize our assessment. We are still evaluating the impact of the new standard on our shop services operations within our United States industrial services segment, which currently recognize revenue related to the engineering, manufacturing and repair of shell and tube heat exchangers when the product is shipped and all other revenue recognition criteria have been met. The adoption of the new standard will accelerate the timing of revenue recognition for certain contracts within such operations for which control is transferred to our customers over time instead of at a point in time. We have also drafted revised accounting policies and are evaluating the enhanced disclosure requirements on our business processes, controls and systems.

Acquisitions Of Businesses

Acquisitions Of Businesses	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Acquisitions Of Businesses	Acquisitions of Businesses On January 4, 2017 and March 1, 2017 , we acquired two companies for a total consideration of $84.8 million . One company provides fire protection and alarm services primarily in the Southern region of the United States, and its results have been included in our United States mechanical construction and facilities services segment. The other company provides mobile mechanical services within the Western region of the United States, and its results have been included in our United States building services segment. In connection with these acquisitions, we acquired working capital of $9.6 million and other net assets of $0.3 million and have preliminarily ascribed $28.7 million to goodwill and $46.2 million to identifiable intangible assets. We expect that all of the acquired goodwill will be deductible for tax purposes. The purchase price allocations for the businesses acquired in 2017 are still preliminary and subject to change during their respective measurement periods. The acquisition of these businesses was accounted for by the acquisition method, and the prices paid for them have been allocated to their respective assets and liabilities, based upon the estimated fair value of their assets and liabilities at the dates of their respective acquisitions by us. On April 15, 2016 , we completed the acquisition of Ardent Services, L.L.C. and Rabalais Constructors, LLC (collectively, “Ardent”). This acquisition has been included in our United States electrical construction and facilities services segment. Ardent provides electrical and instrumentation services to the energy infrastructure market in North America, and this acquisition further strengthens our position in electrical construction and services and broadens our capabilities across the industrial and energy sectors, especially in the Gulf Coast, Midwest and Western regions of the United States. Under the terms of the transaction, we acquired 100% of Ardent’s equity interests for total consideration of $201.4 million . In connection with the acquisition of Ardent, we acquired working capital of $34.1 million and other net assets of $3.9 million and have ascribed $121.9 million to goodwill and $41.5 million to identifiable intangible assets. We expect that $99.7 million of the acquired goodwill will be deductible for tax purposes. The weighted average amortization period for the identifiable intangible assets is approximately 13.5 years. We completed the final allocation of Ardent’s purchase price during the first quarter of 2017 with an insignificant impact. On April 1, 2016 , we acquired a company for an immaterial amount. This company provides mobile mechanical services within the Southeastern region of the United States, and its results have been included in our United States building services segment. The purchase price for this acquisition was finalized in 2016.

Disposition of Assets

Disposition of Assets	6 Months Ended
	Jun. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Disposition of Assets	Disposition of Assets Due to a historical pattern of losses in the construction operations of our United Kingdom segment and our negative assessment of construction market conditions in the United Kingdom for the foreseeable future, we ceased construction operations in the United Kingdom during the third quarter of 2014. The results of the construction operations of our United Kingdom segment for all periods are presented in the Condensed Consolidated Financial Statements as discontinued operations. The results of discontinued operations are as follows (in thousands): For the three months ended June 30, For the six months ended June 30, 2017 2016 2017 2016 Revenues $ 944 $ 5 $ 944 $ 68 Loss from discontinued operation, net of income taxes $ (18 ) $ (1,097 ) $ (522 ) $ (1,178 ) Diluted loss per share from discontinued operation $ (0.00 ) $ (0.02 ) $ (0.01 ) $ (0.02 ) The loss from discontinued operations in 2017 was primarily due to legal costs related to the settlement of final contract balances on certain construction projects completed in prior years, partially offset by revenues recognized upon the settlement of a previously outstanding contract claim. Included in the Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016 are the following major classes of assets and liabilities associated with the discontinued operation (in thousands): June 30, December 31, Assets of discontinued operation: Current assets $ 865 $ 1,233 Liabilities of discontinued operation: Current liabilities $ 3,657 $ 4,036 At June 30, 2017, the assets and liabilities of the discontinued operation consisted of accounts receivable, contract retentions and contract warranty obligations that are expected to be collected or fulfilled in the ordinary course of business. Additionally at June 30, 2017, there remained $0.1 million of obligations related to employee severance, which are expected to be paid during the remainder of 2017. The settlement of the remaining assets and liabilities may result in additional income and/or expenses. Such income and/or expenses are expected to be immaterial and will be reflected as discontinued operations as incurred.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Calculation of Basic and Diluted Earnings (Loss) per Common Share The following tables summarize our calculation of Basic and Diluted Earnings (Loss) per Common Share (“EPS”) for the three and six months ended June 30, 2017 and 2016 (in thousands, except share and per share data): For the three months ended June 30, 2017 2016 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 56,776 $ 56,477 Loss from discontinued operation, net of income taxes (18 ) (1,097 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 56,758 $ 55,380 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 59,290,420 60,808,502 Effect of dilutive securities—Share-based awards 348,641 395,719 Shares used to compute diluted earnings (loss) per common share 59,639,061 61,204,221 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.96 $ 0.93 From discontinued operation (0.00 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.96 $ 0.91 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.95 $ 0.92 From discontinued operation (0.00 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.95 $ 0.90 For the six months ended June 30, 2017 2016 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 109,920 $ 90,906 Loss from discontinued operation, net of income taxes (522 ) (1,178 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 109,398 $ 89,728 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 59,527,863 60,854,781 Effect of dilutive securities—Share-based awards 345,553 421,497 Shares used to compute diluted earnings (loss) per common share 59,873,416 61,276,278 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 1.85 $ 1.49 From discontinued operation (0.01 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 1.84 $ 1.47 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 1.84 $ 1.48 From discontinued operation (0.01 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 1.83 $ 1.46 The number of outstanding share-based awards that were excluded from the computation of diluted EPS for the three and six months ended June 30, 2017 because they would be anti-dilutive were 47,200 and zero , respectively. There were no anti-dilutive share-based awards for the three and six months ended June 30, 2016 .

Inventories

Inventories	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): June 30, December 31, Raw materials and construction materials $ 23,416 $ 21,997 Work in process 19,035 15,429 Inventories $ 42,451 $ 37,426

Debt

Debt	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Debt	Debt Debt in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): June 30, December 31, Revolving credit facility $ 125,000 $ 125,000 Term loan 292,405 300,000 Unamortized debt issuance costs (4,844 ) (5,437 ) Capitalized lease obligations 4,598 3,732 Other 25 31 Total debt 417,184 423,326 Less: current maturities 15,318 15,030 Total long-term debt $ 401,866 $ 408,296 Credit Agreement Until August 3, 2016, we had a credit agreement dated as of November 25, 2013 (as amended, the “2013 Credit Agreement”), which provided for a revolving credit facility of $750.0 million (the “2013 Revolving Credit Facility”) and a term loan of $350.0 million (the “2013 Term Loan”). On August 3, 2016 , we amended and restated the 2013 Credit Agreement to provide for a $900.0 million revolving credit facility (the “2016 Revolving Credit Facility”) and a $400.0 million term loan (the “2016 Term Loan”) (collectively referred to as the “2016 Credit Agreement”) expiring August 3, 2021 . The proceeds of the 2016 Term Loan were used to repay amounts drawn under the 2013 Term Loan, as well as a portion of the outstanding balance under the 2013 Revolving Credit Facility. We may increase the 2016 Revolving Credit Facility to $1.3 billion if additional lenders are identified and/or existing lenders are willing to increase their current commitments. We may allocate up to $300.0 million of available capacity under the 2016 Revolving Credit Facility to letters of credit for our account or for the account of any of our subsidiaries. Obligations under the 2016 Credit Agreement are guaranteed by most of our direct and indirect subsidiaries and are secured by substantially all of our assets. The 2016 Credit Agreement contains various covenants providing for, among other things, maintenance of certain financial ratios and certain limitations on payment of dividends, common stock repurchases, investments, acquisitions, indebtedness and capital expenditures. We were in compliance with all such covenants as of June 30, 2017 and December 31, 2016 . A commitment fee is payable on the average daily unused amount of the 2016 Revolving Credit Facility, which ranges from 0.15% to 0.30% , based on certain financial tests. The fee was 0.15% of the unused amount as of June 30, 2017 . Borrowings under the 2016 Credit Agreement bear interest at (1) a base rate plus a margin of 0.00% to 0.75% , based on certain financial tests, or (2) United States dollar LIBOR ( 1.23% at June 30, 2017 ) plus 1.00% to 1.75% , based on certain financial tests. The base rate is determined by the greater of (a) the prime commercial lending rate announced by Bank of Montreal from time to time ( 4.25% at June 30, 2017 ), (b) the federal funds effective rate, plus ½ of 1.00% , (c) the daily one month LIBOR rate, plus 1.00% , or (d) 0.00% . The interest rate in effect at June 30, 2017 was 2.23% . Fees for letters of credit issued under the 2016 Revolving Credit Facility range from 1.00% to 1.75% of the respective face amounts of outstanding letters of credit and are computed based on certain financial tests. We capitalized an additional $3.0 million of debt issuance costs associated with the 2016 Credit Agreement. Debt issuance costs are amortized over the life of the agreement and are included as part of interest expense. The 2016 Term Loan required us to make principal payments of $5.0 million on the last day of March, June, September and December of each year, which commenced with the calendar quarter ended December 31, 2016. On December 30, 2016, we made a payment of $100.0 million , of which $5.0 million represented our required quarterly payment and $95.0 million represented a prepayment of outstanding principal. Such prepayment was applied against the remaining mandatory quarterly payments on a ratable basis. As a result, commencing with the calendar quarter ended March 31, 2017, our required quarterly payment has been reduced to $3.8 million . All unpaid principal and interest is due on August 3, 2021. As of June 30, 2017 and December 31, 2016 , the balance of the 2016 Term Loan was $292.4 million and $300.0 million , respectively. As of June 30, 2017 and December 31, 2016 , we had approximately $105.8 million and $91.9 million of letters of credit outstanding, respectively. There were $125.0 million in borrowings outstanding under the 2016 Revolving Credit Facility as of June 30, 2017 and December 31, 2016 .

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements We use a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy, which gives the highest priority to quoted prices in active markets, is comprised of the following three levels: Level 1 – Unadjusted quoted market prices in active markets for identical assets and liabilities. Level 2 – Observable inputs, other than Level 1 inputs. Level 2 inputs would typically include quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly. Level 3 – Prices or valuations that require inputs that are both significant to the measurement and unobservable. The following tables provide the assets and liabilities carried at fair value measured on a recurring basis as of June 30, 2017 and December 31, 2016 (in thousands): Assets at Fair Value as of June 30, 2017 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 385,396 $ — $ — $ 385,396 Restricted cash (2) 1,817 — — 1,817 Deferred compensation plan assets (3) 19,806 — — 19,806 Total $ 407,019 $ — $ — $ 407,019 Assets at Fair Value as of December 31, 2016 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 464,617 $ — $ — $ 464,617 Restricted cash (2) 2,043 — — 2,043 Deferred compensation plan assets (3) 12,153 — — 12,153 Total $ 478,813 $ — $ — $ 478,813 ________ (1) Cash and cash equivalents include money market funds with original maturity dates of three months or less, which are Level 1 assets. At June 30, 2017 and December 31, 2016 , we had $145.5 million and $154.6 million , respectively, in money market funds. (2) Restricted cash is classified as “Prepaid expenses and other” in the Condensed Consolidated Balance Sheets. (3) Deferred compensation plan assets are classified as “Other assets” in the Condensed Consolidated Balance Sheets. We believe that the carrying values of our financial instruments, which include accounts receivable and other financing commitments, approximate their fair values due primarily to their short-term maturities and low risk of counterparty default. The carrying value of our debt associated with the 2016 Credit Agreement approximates its fair value due to the variable rate on such debt.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended June 30, 2017 and 2016 , our income tax provision from continuing operations was $33.0 million and $32.9 million , respectively, based on an effective income tax rate, before discrete items and less amounts attributable to noncontrolling interests, of 37.5% for both periods. The actual income tax rate on income from continuing operations, less amounts attributable to noncontrolling interests, for the three months ended June 30, 2017 and 2016 , inclusive of discrete items, was 36.8% for both periods. For the six months ended June 30, 2017 and 2016 , our income tax provision from continuing operations was $59.9 million and $51.9 million , respectively, based on effective income tax rates, before discrete items and less amounts attributable to noncontrolling interests, of 37.7% and 37.6% , respectively. The actual income tax rates on income from continuing operations, less amounts attributable to noncontrolling interests, for the six months ended June 30, 2017 and 2016 , inclusive of discrete items, were 35.3% and 36.3% , respectively. The increase in the 2017 income tax provision was primarily due to increased income from continuing operations. The decrease in the 2017 actual income tax rate on income from continuing operations was due to the reversal of reserves for previously unrecognized income tax benefits in the first quarter of 2017. As of June 30, 2017 and December 31, 2016 , the amount of unrecognized income tax benefits was $1.9 million and $4.0 million (of which $0.6 million and $2.2 million , if recognized, would favorably affect our effective income tax rate), respectively. We report interest expense and/or income related to unrecognized income tax benefits in the income tax provision. As of June 30, 2017 and December 31, 2016 , we had approximately $0.2 million and $0.5 million , respectively, of accrued interest expense related to unrecognized income tax benefits included as a liability in the Condensed Consolidated Balance Sheets. For the three months ended June 30, 2017 and 2016 , $0.1 million and less than $0.1 million of interest expense, respectively, was recognized in the income tax provision. For the six months ended June 30, 2017 and 2016 , $0.3 million of interest income and less than $0.1 million of interest expense, respectively, was recognized in the income tax provision. It is reasonably possible that approximately $1.2 million of unrecognized income tax benefits at June 30, 2017 , primarily relating to uncertain tax positions attributable to tax return filing positions, will significantly decrease in the next twelve months as a result of estimated settlements with taxing authorities. We file income tax returns with the Internal Revenue Service and various state, local and foreign tax agencies. The Company is currently under examination by various taxing authorities for the years 2012 through 2015. During the first quarter of 2017, the Company settled an examination with a taxing authority which resulted in the recognition of $3.3 million of income tax benefits upon the reversal of reserves for previously uncertain tax positions.

Common Stock

Common Stock	6 Months Ended
	Jun. 30, 2017
Stockholders' Equity Note [Abstract]
Common Stock	Common Stock As of June 30, 2017 and December 31, 2016 , there were 59,171,463 and 59,946,984 shares of our common stock outstanding, respectively. During the three months ended June 30, 2017 and 2016 , we issued 76,347 and 107,939 shares of common stock, respectively. During the six months ended June 30, 2017 and 2016 , we issued 193,381 and 306,066 shares of common stock, respectively. These shares were issued primarily upon: (a) the satisfaction of required conditions under certain of our share-based compensation plans, (b) the purchase of common stock pursuant to our employee stock purchase plan and (c) the exercise of stock options. On September 26, 2011, our Board of Directors authorized us to repurchase up to $100.0 million of our outstanding common stock. On December 5, 2013, October 23, 2014 and October 28, 2015, our Board of Directors authorized us to repurchase up to an additional $100.0 million , $250.0 million and $200.0 million of our outstanding common stock, respectively. During 2017, we have repurchased approximately 1.0 million shares of our common stock for approximately $63.4 million . Since the inception of the repurchase programs through June 30, 2017 , we have repurchased approximately 12.4 million shares of our common stock for approximately $547.9 million . As of June 30, 2017 , there remained authorization for us to repurchase approximately $102.1 million of our shares. The repurchase programs do not obligate the Company to acquire any particular amount of common stock and may be suspended, recommenced or discontinued at any time or from time to time without prior notice. We may repurchase our shares from time to time to the extent permitted by securities laws and other legal requirements, including provisions in our 2016 Credit Agreement placing limitations on such repurchases. The repurchase programs have been and will be funded from our operations.

Retirement Plans

Retirement Plans	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Retirement Plans	Retirement Plans Our United Kingdom subsidiary has a defined benefit pension plan covering all eligible employees (the “UK Plan”); however, no individual joining the company after October 31, 2001 may participate in the UK Plan. On May 31, 2010, we curtailed the future accrual of benefits for active employees under such plan. Components of Net Periodic Pension Cost The components of net periodic pension cost of the UK Plan for the three and six months ended June 30, 2017 and 2016 were as follows (in thousands): For the three months ended June 30, For the six months ended June 30, 2017 2016 2017 2016 Interest cost $ 2,124 $ 2,696 $ 4,169 $ 5,381 Expected return on plan assets (3,327 ) (3,717 ) (6,531 ) (7,418 ) Amortization of unrecognized loss 724 535 1,422 1,067 Net periodic pension cost (income) $ (479 ) $ (486 ) $ (940 ) $ (970 ) Employer Contributions For the six months ended June 30, 2017 , our United Kingdom subsidiary contributed approximately $2.3 million to the UK Plan and anticipates contributing an additional $2.3 million during the remainder of 2017.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Government Contracts As a government contractor, we are subject to U.S. government audits and investigations relating to our operations, including claims for fines, penalties and compensatory and treble damages, and possible suspension or debarment from doing business with the government. Based on currently available information, we believe the outcome of ongoing government disputes and investigations will not have a material impact on our financial position, results of operations or liquidity. Legal Matters One of our subsidiaries was a subcontractor to a mechanical contractor (“Mechanical Contractor”) on a construction project where an explosion occurred in 2010. The Mechanical Contractor has asserted claims, in the context of an arbitration proceeding against our subsidiary, alleging that our subsidiary is responsible for a portion of the damages for which the Mechanical Contractor may be liable as a result of: (a) personal injury suffered by individuals as a result of the explosion and (b) the Mechanical Contractor’s legal fees and associated management costs in defending against any and all such claims. The Mechanical Contractor previously asserted claims under the Connecticut and Massachusetts Unfair and Deceptive Trade Practices Acts, but such claims were recently withdrawn. The general contractor (as assignee of the Mechanical Contractor) on the construction project, and for whom the Mechanical Contractor worked, has alleged that our subsidiary is responsible for losses asserted by the owner of the project and/or the general contractor because of delays in completion of the project and for damages to the owner’s property. We believe, and have been advised by counsel, that we have a number of meritorious defenses to all such matters. We believe that the ultimate outcome of such matters will not have a material adverse effect on our consolidated financial position, results of operations or liquidity. Notwithstanding our assessment of the final impact of this matter, we are not able to estimate with any certainty the amount of loss, if any, which would be associated with an adverse resolution. We are involved in several other proceedings in which damages and claims have been asserted against us. We believe that we have a number of valid defenses to such proceedings and claims and intend to vigorously defend ourselves. Other potential claims may exist that have not yet been asserted against us. We do not believe that any such matters will have a material adverse effect on our financial position, results of operations or liquidity. Litigation is subject to many uncertainties and the outcome of litigation is not predictable with assurance. It is possible that some litigation matters for which liabilities have not been recorded could be decided unfavorably to us, and that any such unfavorable decisions could have a material adverse effect on our financial position, results of operations or liquidity. Restructuring expenses Restructuring expenses, primarily relating to employee severance obligations, were $0.3 million and $0.9 million for the three and six months ended June 30, 2017, respectively, and $0.6 million and $0.7 million for the three and six months ended June 30, 2016, respectively. As of June 30, 2017 , the balance of these restructuring obligations yet to be paid was approximately $0.2 million , which is expected to be paid during the remainder of 2017. No material expenses in connection with restructuring from continuing operations are expected to be incurred during the remainder of 2017. The changes in restructuring activity by reportable segments during the six months ended June 30, 2017 and 2016 were as follows (in thousands): United States United States building services segment Total Balance at December 31, 2015 $ — $ 81 $ 81 Charges 198 534 732 Payments (52 ) (434 ) (486 ) Balance at June 30, 2016 $ 146 $ 181 $ 327 Balance at December 31, 2016 $ 188 $ 13 $ 201 Charges 218 690 908 Payments (316 ) (621 ) (937 ) Balance at June 30, 2017 $ 90 $ 82 $ 172

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information Our reportable segments reflect certain reclassifications of prior year amounts from our United States mechanical construction and facilities services segment to our United States building services segment due to changes in our internal reporting structure. We have the following reportable segments, which provide services associated with the design, integration, installation, start-up, operation and maintenance of various systems: (a) United States electrical construction and facilities services (involving systems for electrical power transmission and distribution; premises electrical and lighting systems; process instrumentation in the refining, chemical process, food process and mining industries; low-voltage systems, such as fire alarm, security and process control; voice and data communication; roadway and transit lighting; and fiber optic lines); (b) United States mechanical construction and facilities services (involving systems for heating, ventilation, air conditioning, refrigeration and clean-room process ventilation; fire protection; plumbing, process and high-purity piping; controls and filtration; water and wastewater treatment; central plant heating and cooling; cranes and rigging; millwrighting; and steel fabrication, erection and welding); (c) United States building services; (d) United States industrial services; and (e) United Kingdom building services. The “United States building services” and “United Kingdom building services” segments principally consist of those operations which provide a portfolio of services needed to support the operation and maintenance of our customers’ facilities, including commercial and government site-based operations and maintenance; facility maintenance and services, including reception, security and catering services; outage services to utilities and industrial plants; military base operations support services; mobile maintenance and services; floor care and janitorial services; landscaping, lot sweeping and snow removal; facilities management; vendor management; call center services; installation and support for building systems; program development, management and maintenance for energy systems; technical consulting and diagnostic services; infrastructure and building projects for federal, state and local governmental agencies and bodies; and small modification and retrofit projects, which services are not generally related to customers’ construction programs. The “United States industrial services” segment principally consists of those operations which provide industrial maintenance and services, including those for refineries and petrochemical plants, including on-site repairs, maintenance and service of heat exchangers, towers, vessels and piping; design, manufacturing, repair and hydro blast cleaning of shell and tube heat exchangers and related equipment; refinery turnaround planning and engineering services; specialty welding services; overhaul and maintenance of critical process units in refineries and petrochemical plants; and specialty technical services for refineries and petrochemical plants. The following tables present information about industry segments and geographic areas for the three and six months ended June 30, 2017 and 2016 (in thousands): For the three months ended June 30, 2017 2016 Revenues from unrelated entities: United States electrical construction and facilities services $ 449,222 $ 420,632 United States mechanical construction and facilities services 741,817 625,547 United States building services 438,264 463,145 United States industrial services 187,476 333,508 Total United States operations 1,816,779 1,842,832 United Kingdom building services 79,158 90,584 Total worldwide operations $ 1,895,937 $ 1,933,416 Total revenues: United States electrical construction and facilities services $ 451,124 $ 430,101 United States mechanical construction and facilities services 750,442 628,770 United States building services 453,849 476,458 United States industrial services 187,610 333,752 Less intersegment revenues (26,246 ) (26,249 ) Total United States operations 1,816,779 1,842,832 United Kingdom building services 79,158 90,584 Total worldwide operations $ 1,895,937 $ 1,933,416 NOTE 13 Segment Information - (Continued) For the six months ended June 30, 2017 2016 Revenues from unrelated entities: United States electrical construction and facilities services $ 892,238 $ 768,921 United States mechanical construction and facilities services 1,412,946 1,233,975 United States building services 878,294 906,258 United States industrial services 446,015 591,012 Total United States operations 3,629,493 3,500,166 United Kingdom building services 158,176 178,220 Total worldwide operations $ 3,787,669 $ 3,678,386 Total revenues: United States electrical construction and facilities services $ 895,140 $ 784,205 United States mechanical construction and facilities services 1,429,833 1,240,540 United States building services 908,793 932,255 United States industrial services 446,515 591,622 Less intersegment revenues (50,788 ) (48,456 ) Total United States operations 3,629,493 3,500,166 United Kingdom building services 158,176 178,220 Total worldwide operations $ 3,787,669 $ 3,678,386 For the three months ended June 30, 2017 2016 Operating income (loss): United States electrical construction and facilities services $ 32,118 $ 23,011 United States mechanical construction and facilities services 53,054 37,936 United States building services 20,185 18,535 United States industrial services 4,373 33,148 Total United States operations 109,730 112,630 United Kingdom building services 3,497 3,258 Corporate administration (20,063 ) (22,958 ) Restructuring expenses (343 ) (641 ) Total worldwide operations 92,821 92,289 Other corporate items: Interest expense (3,069 ) (3,118 ) Interest income 73 192 Income from continuing operations before income taxes $ 89,825 $ 89,363 NOTE 13 Segment Information - (Continued) For the six months ended June 30, 2017 2016 Operating income (loss): United States electrical construction and facilities services $ 63,152 $ 39,718 United States mechanical construction and facilities services 93,487 61,717 United States building services 34,394 32,533 United States industrial services 21,417 52,014 Total United States operations 212,450 185,982 United Kingdom building services 5,176 6,569 Corporate administration (41,123 ) (43,915 ) Restructuring expenses (908 ) (732 ) Total worldwide operations 175,595 147,904 Other corporate items: Interest expense (6,140 ) (5,494 ) Interest income 330 357 Income from continuing operations before income taxes $ 169,785 $ 142,767 June 30, December 31, Total assets: United States electrical construction and facilities services $ 588,331 $ 631,581 United States mechanical construction and facilities services 1,038,760 954,633 United States building services 784,941 753,434 United States industrial services 832,988 850,434 Total United States operations 3,245,020 3,190,082 United Kingdom building services 112,777 105,081 Corporate administration 489,777 557,275 Total worldwide operations $ 3,847,574 $ 3,852,438

Fair Value Measurements (Policy

Fair Value Measurements (Policy)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	We use a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy, which gives the highest priority to quoted prices in active markets, is comprised of the following three levels: Level 1 – Unadjusted quoted market prices in active markets for identical assets and liabilities. Level 2 – Observable inputs, other than Level 1 inputs. Level 2 inputs would typically include quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly. Level 3 – Prices or valuations that require inputs that are both significant to the measurement and unobservable.

Disposition of Assets (Tables)

Disposition of Assets (Tables)	6 Months Ended
	Jun. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Components Of The Results of Discontinued Operations For The Construction Operations of the United Kingdom Segment	The results of discontinued operations are as follows (in thousands): For the three months ended June 30, For the six months ended June 30, 2017 2016 2017 2016 Revenues $ 944 $ 5 $ 944 $ 68 Loss from discontinued operation, net of income taxes $ (18 ) $ (1,097 ) $ (522 ) $ (1,178 ) Diluted loss per share from discontinued operation $ (0.00 ) $ (0.02 ) $ (0.01 ) $ (0.02 ) The loss from discontinued operations in 2017 was primarily due to legal costs related to the settlement of final contract balances on certain construction projects completed in prior years, partially offset by revenues recognized upon the settlement of a previously outstanding contract claim. Included in the Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016 are the following major classes of assets and liabilities associated with the discontinued operation (in thousands): June 30, December 31, Assets of discontinued operation: Current assets $ 865 $ 1,233 Liabilities of discontinued operation: Current liabilities $ 3,657 $ 4,036

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Calculation Of Basic And Diluted Earnings Per Common Share	The following tables summarize our calculation of Basic and Diluted Earnings (Loss) per Common Share (“EPS”) for the three and six months ended June 30, 2017 and 2016 (in thousands, except share and per share data): For the three months ended June 30, 2017 2016 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 56,776 $ 56,477 Loss from discontinued operation, net of income taxes (18 ) (1,097 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 56,758 $ 55,380 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 59,290,420 60,808,502 Effect of dilutive securities—Share-based awards 348,641 395,719 Shares used to compute diluted earnings (loss) per common share 59,639,061 61,204,221 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.96 $ 0.93 From discontinued operation (0.00 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.96 $ 0.91 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.95 $ 0.92 From discontinued operation (0.00 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.95 $ 0.90 For the six months ended June 30, 2017 2016 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 109,920 $ 90,906 Loss from discontinued operation, net of income taxes (522 ) (1,178 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 109,398 $ 89,728 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 59,527,863 60,854,781 Effect of dilutive securities—Share-based awards 345,553 421,497 Shares used to compute diluted earnings (loss) per common share 59,873,416 61,276,278 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 1.85 $ 1.49 From discontinued operation (0.01 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 1.84 $ 1.47 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 1.84 $ 1.48 From discontinued operation (0.01 ) (0.02 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 1.83 $ 1.46

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): June 30, December 31, Raw materials and construction materials $ 23,416 $ 21,997 Work in process 19,035 15,429 Inventories $ 42,451 $ 37,426

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Schedule Of Debt	Debt in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): June 30, December 31, Revolving credit facility $ 125,000 $ 125,000 Term loan 292,405 300,000 Unamortized debt issuance costs (4,844 ) (5,437 ) Capitalized lease obligations 4,598 3,732 Other 25 31 Total debt 417,184 423,326 Less: current maturities 15,318 15,030 Total long-term debt $ 401,866 $ 408,296

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities Carried At Fair Value Measured On A Recurring Basis	The following tables provide the assets and liabilities carried at fair value measured on a recurring basis as of June 30, 2017 and December 31, 2016 (in thousands): Assets at Fair Value as of June 30, 2017 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 385,396 $ — $ — $ 385,396 Restricted cash (2) 1,817 — — 1,817 Deferred compensation plan assets (3) 19,806 — — 19,806 Total $ 407,019 $ — $ — $ 407,019 Assets at Fair Value as of December 31, 2016 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 464,617 $ — $ — $ 464,617 Restricted cash (2) 2,043 — — 2,043 Deferred compensation plan assets (3) 12,153 — — 12,153 Total $ 478,813 $ — $ — $ 478,813 ________ (1) Cash and cash equivalents include money market funds with original maturity dates of three months or less, which are Level 1 assets. At June 30, 2017 and December 31, 2016 , we had $145.5 million and $154.6 million , respectively, in money market funds. (2) Restricted cash is classified as “Prepaid expenses and other” in the Condensed Consolidated Balance Sheets. (3) Deferred compensation plan assets are classified as “Other assets” in the Condensed Consolidated Balance Sheets.

Retirement Plans (Tables)

Retirement Plans (Tables)	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Components Of Net Periodic Pension Cost	The components of net periodic pension cost of the UK Plan for the three and six months ended June 30, 2017 and 2016 were as follows (in thousands): For the three months ended June 30, For the six months ended June 30, 2017 2016 2017 2016 Interest cost $ 2,124 $ 2,696 $ 4,169 $ 5,381 Expected return on plan assets (3,327 ) (3,717 ) (6,531 ) (7,418 ) Amortization of unrecognized loss 724 535 1,422 1,067 Net periodic pension cost (income) $ (479 ) $ (486 ) $ (940 ) $ (970 )

Commitments and Contingencies R

Commitments and Contingencies Restructuring and Related Activities (Tables)	6 Months Ended
	Jun. 30, 2017
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	The changes in restructuring activity by reportable segments during the six months ended June 30, 2017 and 2016 were as follows (in thousands): United States United States building services segment Total Balance at December 31, 2015 $ — $ 81 $ 81 Charges 198 534 732 Payments (52 ) (434 ) (486 ) Balance at June 30, 2016 $ 146 $ 181 $ 327 Balance at December 31, 2016 $ 188 $ 13 $ 201 Charges 218 690 908 Payments (316 ) (621 ) (937 ) Balance at June 30, 2017 $ 90 $ 82 $ 172

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Information About Industry Segments And Geographic Areas	The following tables present information about industry segments and geographic areas for the three and six months ended June 30, 2017 and 2016 (in thousands): For the three months ended June 30, 2017 2016 Revenues from unrelated entities: United States electrical construction and facilities services $ 449,222 $ 420,632 United States mechanical construction and facilities services 741,817 625,547 United States building services 438,264 463,145 United States industrial services 187,476 333,508 Total United States operations 1,816,779 1,842,832 United Kingdom building services 79,158 90,584 Total worldwide operations $ 1,895,937 $ 1,933,416 Total revenues: United States electrical construction and facilities services $ 451,124 $ 430,101 United States mechanical construction and facilities services 750,442 628,770 United States building services 453,849 476,458 United States industrial services 187,610 333,752 Less intersegment revenues (26,246 ) (26,249 ) Total United States operations 1,816,779 1,842,832 United Kingdom building services 79,158 90,584 Total worldwide operations $ 1,895,937 $ 1,933,416 NOTE 13 Segment Information - (Continued) For the six months ended June 30, 2017 2016 Revenues from unrelated entities: United States electrical construction and facilities services $ 892,238 $ 768,921 United States mechanical construction and facilities services 1,412,946 1,233,975 United States building services 878,294 906,258 United States industrial services 446,015 591,012 Total United States operations 3,629,493 3,500,166 United Kingdom building services 158,176 178,220 Total worldwide operations $ 3,787,669 $ 3,678,386 Total revenues: United States electrical construction and facilities services $ 895,140 $ 784,205 United States mechanical construction and facilities services 1,429,833 1,240,540 United States building services 908,793 932,255 United States industrial services 446,515 591,622 Less intersegment revenues (50,788 ) (48,456 ) Total United States operations 3,629,493 3,500,166 United Kingdom building services 158,176 178,220 Total worldwide operations $ 3,787,669 $ 3,678,386 For the three months ended June 30, 2017 2016 Operating income (loss): United States electrical construction and facilities services $ 32,118 $ 23,011 United States mechanical construction and facilities services 53,054 37,936 United States building services 20,185 18,535 United States industrial services 4,373 33,148 Total United States operations 109,730 112,630 United Kingdom building services 3,497 3,258 Corporate administration (20,063 ) (22,958 ) Restructuring expenses (343 ) (641 ) Total worldwide operations 92,821 92,289 Other corporate items: Interest expense (3,069 ) (3,118 ) Interest income 73 192 Income from continuing operations before income taxes $ 89,825 $ 89,363 NOTE 13 Segment Information - (Continued) For the six months ended June 30, 2017 2016 Operating income (loss): United States electrical construction and facilities services $ 63,152 $ 39,718 United States mechanical construction and facilities services 93,487 61,717 United States building services 34,394 32,533 United States industrial services 21,417 52,014 Total United States operations 212,450 185,982 United Kingdom building services 5,176 6,569 Corporate administration (41,123 ) (43,915 ) Restructuring expenses (908 ) (732 ) Total worldwide operations 175,595 147,904 Other corporate items: Interest expense (6,140 ) (5,494 ) Interest income 330 357 Income from continuing operations before income taxes $ 169,785 $ 142,767 June 30, December 31, Total assets: United States electrical construction and facilities services $ 588,331 $ 631,581 United States mechanical construction and facilities services 1,038,760 954,633 United States building services 784,941 753,434 United States industrial services 832,988 850,434 Total United States operations 3,245,020 3,190,082 United Kingdom building services 112,777 105,081 Corporate administration 489,777 557,275 Total worldwide operations $ 3,847,574 $ 3,852,438

New Accounting Pronouncements N

New Accounting Pronouncements New Accounting Pronouncements (Details) $ in Millions	Jun. 30, 2017USD ($)
Accounting Standards Update 2015-17 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 41.7

Acquisitions Of Businesses (Det

Acquisitions Of Businesses (Details) $ in Thousands	Mar. 01, 2017USD ($)Company	Jan. 04, 2017Company	Apr. 15, 2016USD ($)Company	Apr. 01, 2016Company	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Goodwill					$ 1,010,399	$ 979,628
Number of businesses acquired | Company	1	1	1	1
Q1 2017 Acquisitions [Member]
Business Acquisition [Line Items]
Purchase price	$ 84,800
Working capital acquired	9,600
Other net assets	300
Goodwill	28,700
Identifiable intangible assets	$ 46,200
Ardent [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired			100.00%
Purchase price			$ 201,400
Working capital acquired			34,100
Other net assets			3,900
Goodwill			121,900
Identifiable intangible assets			41,500
Acquired goodwill, tax deductible amount			$ 99,700
Intangible amortization period			13 years 6 months

Disposition of Assets (Narrativ

Disposition of Assets (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Loss from discontinued operation, net of income taxes	$ (18)	$ (1,097)	$ (522)	$ (1,178)
From discontinued operation (in US dollars per share)	$ 0	$ (0.02)	$ (0.01)	$ (0.02)
Restructuring reserve	$ 172	$ 327	$ 172	$ 327	$ 201	$ 81
UNITED KINGDOM | Discontinued Operations [Member] | United Kingdom Construction [Member]
Income Statement [Abstract]
Revenues	944	5	944	68
Loss from discontinued operation, net of income taxes	$ (18)	$ (1,097)	$ (522)	$ (1,178)
From discontinued operation (in US dollars per share)	$ 0	$ (0.02)	$ (0.01)	$ (0.02)
Assets of discontinued operation:
Current assets	$ 865		$ 865		1,233
Liabilities of discontinued operation:
Current liabilities	3,657		3,657		$ 4,036
Employee Severance [Member] | UNITED KINGDOM | Discontinued Operations [Member] | United Kingdom Construction [Member]
Income Statement [Abstract]
Restructuring reserve	$ 100		$ 100

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator
Income from continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars)	$ 56,776	$ 56,477	$ 109,920	$ 90,906
Loss from discontinued operation, net of income taxes (in US dollars)	(18)	(1,097)	(522)	(1,178)
Net income attributable to EMCOR Group, Inc. (in US dollars)	$ 56,758	$ 55,380	$ 109,398	$ 89,728
Denominator
Weighted average shares outstanding used to compute basic earnings (loss) per common share (in shares)	59,290,420	60,808,502	59,527,863	60,854,781
Effect of dilutive securities-Share-based awards (in shares)	348,641	395,719	345,553	421,497
Shares used to compute diluted earnings (loss) per common share (in shares)	59,639,061	61,204,221	59,873,416	61,276,278
Basic earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$ 0.96	$ 0.93	$ 1.85	$ 1.49
From discontinued operation (in US dollars per share)	0	(0.02)	(0.01)	(0.02)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.96	0.91	1.84	1.47
Diluted earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.95	0.92	1.84	1.48
From discontinued operation (in US dollars per share)	0	(0.02)	(0.01)	(0.02)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$ 0.95	$ 0.90	$ 1.83	$ 1.46
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive share-based awards excluded from calculation of diluted earnings per share (in shares)	47,200	0	0	0

Inventories (Inventories) (Deta

Inventories (Inventories) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials and construction materials	$ 23,416	$ 21,997
Work in process	19,035	15,429
Inventories	$ 42,451	$ 37,426

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($)	Aug. 03, 2016	Dec. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2013
Line of Credit Facility [Line Items]
Interest rate description			Borrowings under the 2016 Credit Agreement bear interest at (1) a base rate plus a margin of 0.00% to 0.75%, based on certain financial tests, or (2) United States dollar LIBOR (1.23% at June 30, 2017) plus 1.00% to 1.75%, based on certain financial tests. The base rate is determined by the greater of (a) the prime commercial lending rate announced by Bank of Montreal from time to time (4.25% at June 30, 2017), (b) the federal funds effective rate, plus ½ of 1.00%, (c) the daily one month LIBOR rate, plus 1.00%, or (d) 0.00%. The interest rate in effect at June 30, 2017 was 2.23%. Fees for letters of credit issued under the 2016 Revolving Credit Facility range from 1.00% to 1.75% of the respective face amounts of outstanding letters of credit and are computed based on certain financial tests.
Repayments of long-term debt (in US dollars)			$ 7,601,000	$ 8,756,000
Letters of credit outstanding (in US dollars)		$ 91,900,000	105,800,000		$ 91,900,000
Borrowings under revolving credit facility (in US dollars)		125,000,000	$ 125,000,000		125,000,000
2013 Term Loan
Line of Credit Facility [Line Items]
Term Loan (in US dollars)						$ 350,000,000
2016 Credit Agreement
Line of Credit Facility [Line Items]
Credit agreement, initiation date	Aug. 3, 2016
Expiration date of credit agreement			Aug. 3, 2021
Interest rate			2.23%
Debt issuance costs, capitalized (in US dollars)		3,000,000			3,000,000
2016 Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowings under revolving credit facility (in US dollars)		125,000,000	$ 125,000,000		125,000,000
2016 Term Loan
Line of Credit Facility [Line Items]
Term Loan (in US dollars)	$ 400,000,000	300,000,000	292,405,000		300,000,000
Periodic principal payment on term loan (in US dollars)		5,000,000	$ 3,800,000
Term loan, annual principal payments (in US dollars)		$ 100,000,000			100,000,000
Repayments of long-term debt (in US dollars)					$ 95,000,000
Base Rate [Member] | Minimum [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			0.00%
Base Rate [Member] | Maximum [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			0.75%
Prime Rate, Bank of Montreal [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Commercial lending rate			4.25%
Credit Agreement Base Rate, Daily One Month LIBOR Rate [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.00%
London Interbank Offered Rate (LIBOR) [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Commercial lending rate			1.23%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.00%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.75%
Credit Agreement Base Rate, Federal Funds Rate [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			0.50%
Credit Agreement, 0% Base Rate [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			0.00%
Revolving Credit Facility [Member] | 2013 Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity (in US dollars)						$ 750,000,000
Revolving Credit Facility [Member] | 2016 Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity (in US dollars)	$ 900,000,000
Increase in borrowing capacity (in US dollars)			$ 1,300,000,000
Letters of credit maximum borrowing capacity (in US dollars)			$ 300,000,000
Commitment fee percentage of unused amount			0.15%
Revolving Credit Facility [Member] | Minimum [Member] | 2016 Revolving Credit Facility
Line of Credit Facility [Line Items]
Commitment fee percentage of unused amount			0.15%
Letter of credit fees			1.00%
Revolving Credit Facility [Member] | Maximum [Member] | 2016 Revolving Credit Facility
Line of Credit Facility [Line Items]
Commitment fee percentage of unused amount			0.30%
Letter of credit fees			1.75%

Debt (Schedule Of Debt) (Detail

Debt (Schedule Of Debt) (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016	Aug. 03, 2016
Debt Instrument [Line Items]
Revolving credit facility	$ 125,000,000	$ 125,000,000
Unamortized debt issuance costs	(4,844,000)	(5,437,000)
Capitalized lease obligations	4,598,000	3,732,000
Other	25,000	31,000
Total debt	417,184,000	423,326,000
Less: current maturities	15,318,000	15,030,000
Total long-term debt	401,866,000	408,296,000
2016 Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility	125,000,000	125,000,000
2016 Term Loan
Debt Instrument [Line Items]
Term loan	$ 292,405,000	$ 300,000,000	$ 400,000,000

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule Of Assets And Liabilities Carried At Fair Value Measured On A Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	$ 385,396	$ 464,617
Restricted cash	[2]	1,817	2,043
Deferred compensation plan assets	[3]	19,806	12,153
Total		407,019	478,813
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	385,396	464,617
Restricted cash	[2]	1,817	2,043
Deferred compensation plan assets	[3]	19,806	12,153
Total		407,019	478,813
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	0	0
Restricted cash	[2]	0	0
Deferred compensation plan assets	[3]	0	0
Total		0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	0	0
Restricted cash	[2]	0	0
Deferred compensation plan assets	[3]	0	0
Total		0	0
Money Market Funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		$ 145,500	$ 154,600
[1]	Cash and cash equivalents include money market funds with original maturity dates of three months or less, which are Level 1 assets. At June 30, 2017 and December 31, 2016, we had $145.5 million and $154.6 million, respectively, in money market funds.
[2]	Restricted cash is classified as “Prepaid expenses and other” in the Condensed Consolidated Balance Sheets.
[3]	Deferred compensation plan assets are classified as “Other assets” in the Condensed Consolidated Balance Sheets.

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Income tax provision	$ 33,019		$ 32,911	$ 59,865	$ 51,880
Effective income tax rates	37.50%		37.50%	37.70%	37.60%
Actual income tax rates	36.80%		36.80%	35.30%	36.30%
Unrecognized income tax benefits	$ 1,900			$ 1,900		$ 4,000
Unrecognized income tax benefits, if recognized, that would favorably affect the effective income tax rate	600			600		2,200
Accrued interest expense related to unrecognized income tax benefits	200			200		$ 500
Interest income related to unrecognized income tax benefits				300
Interest expense related to unrecognized income tax benefits	100		$ 100		$ 100
Unrecognized income tax benefits to be recognized in the next twelve months	$ 1,200			$ 1,200
Unrecognized tax benefits, decrease resulting from settlements with taxing authorities		$ 3,300

Common Stock (Details)

Common Stock (Details) - USD ($)	3 Months Ended		6 Months Ended		69 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Oct. 28, 2015	Oct. 23, 2014	Dec. 05, 2013	Sep. 26, 2011
Equity, Class of Treasury Stock [Line Items]
Common stock, outstanding	59,171,463		59,171,463		59,171,463	59,946,984
Common stock, issued	76,347	107,939	193,381	306,066
Stock repurchased (in US dollars)			$ 63,430,000	$ 26,076,000
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased					12,400,000
Stock repurchased (in US dollars)			10,000	$ 6,000	$ 547,900,000
Remaining authorized repurchase amount (in US dollars)	$ 102,100,000		$ 102,100,000		$ 102,100,000
Common Stock [Member] | RepurchaseProgramSep262011
Equity, Class of Treasury Stock [Line Items]
Stock repurchase, authorized amount (in US dollars)										$ 100,000,000
Common Stock [Member] | RepurchaseProgramDec052013
Equity, Class of Treasury Stock [Line Items]
Stock repurchase, authorized amount (in US dollars)									$ 100,000,000
Common Stock [Member] | RepurchaseProgramOct232014
Equity, Class of Treasury Stock [Line Items]
Stock repurchase, authorized amount (in US dollars)								$ 250,000,000
Common Stock [Member] | RepurchaseProgramOct282015
Equity, Class of Treasury Stock [Line Items]
Stock repurchase, authorized amount (in US dollars)							$ 200,000,000
Number of shares repurchased			1,000,000
Stock repurchased (in US dollars)			$ 63,400,000

Retirement Plans (Narrative) (D

Retirement Plans (Narrative) (Details) - Foreign Plan [Member] - United Kingdom Subsidiary [Member] $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Contribution of U.K. subsidiary to its defined benefit pension plan	$ 2.3
Anticipated additional contribution	$ 2.3

Retirement Plans (Components Of

Retirement Plans (Components Of Net Periodic Pension Benefit Cost) (Details) - Foreign Plan [Member] - United Kingdom Subsidiary [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 2,124	$ 2,696	$ 4,169	$ 5,381
Expected return on plan assets	(3,327)	(3,717)	(6,531)	(7,418)
Amortization of unamortized loss	724	535	1,422	1,067
Net periodic pension cost (income)	$ (479)	$ (486)	$ (940)	$ (970)

Commitments and Contingencies N

Commitments and Contingencies Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Restructuring expenses	$ 343	$ 641	$ 908	$ 732
Restructuring reserve	172	327	172	327	$ 201	$ 81
Employee Severance [Member]
Loss Contingencies [Line Items]
Restructuring expenses	$ 343	$ 641	$ 908	$ 732

Schedule of Restructuring Activ

Schedule of Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 172	$ 327	$ 172	$ 327	$ 201	$ 81
Restructuring expenses	343	641	908	732
Payments for restructuring			(937)	(486)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	343	641	908	732
UNITED STATES | Operating Segments [Member] | United States Mechanical Construction And Facilities Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	90	146	90	146	188	0
Restructuring expenses			218	198
Payments for restructuring			(316)	(52)
UNITED STATES | Operating Segments [Member] | United States Building Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 82	$ 181	82	181	$ 13	$ 81
Restructuring expenses			690	534
Payments for restructuring			$ (621)	$ (434)

Segment Information (Informatio

Segment Information (Information About Industry Segments And Geographic Areas) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenues from unrelated entities	$ 1,895,937	$ 1,933,416	$ 3,787,669	$ 3,678,386
Total revenues	1,895,937	1,933,416	3,787,669	3,678,386
Operating income (loss)	92,821	92,289	175,595	147,904
Restructuring expenses	(343)	(641)	(908)	(732)
Interest expense	(3,069)	(3,118)	(6,140)	(5,494)
Interest income	73	192	330	357
Income from continuing operations before income taxes	89,825	89,363	169,785	142,767
Total assets	3,847,574		3,847,574		$ 3,852,438
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenues	(26,246)	(26,249)	(50,788)	(48,456)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(20,063)	(22,958)	(41,123)	(43,915)
Total assets	489,777		489,777		557,275
UNITED STATES
Segment Reporting Information [Line Items]
Revenues from unrelated entities	1,816,779	1,842,832	3,629,493	3,500,166
Total revenues	1,816,779	1,842,832	3,629,493	3,500,166
Operating income (loss)	109,730	112,630	212,450	185,982
Total assets	3,245,020		3,245,020		3,190,082
UNITED STATES | United States Electrical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	449,222	420,632	892,238	768,921
UNITED STATES | United States Mechanical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	741,817	625,547	1,412,946	1,233,975
UNITED STATES | United States Building Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	438,264	463,145	878,294	906,258
UNITED STATES | United States Industrial Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	187,476	333,508	446,015	591,012
UNITED STATES | Operating Segments [Member] | United States Electrical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Total revenues	451,124	430,101	895,140	784,205
Operating income (loss)	32,118	23,011	63,152	39,718
Total assets	588,331		588,331		631,581
UNITED STATES | Operating Segments [Member] | United States Mechanical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Total revenues	750,442	628,770	1,429,833	1,240,540
Operating income (loss)	53,054	37,936	93,487	61,717
Restructuring expenses			(218)	(198)
Total assets	1,038,760		1,038,760		954,633
UNITED STATES | Operating Segments [Member] | United States Building Services [Member]
Segment Reporting Information [Line Items]
Total revenues	453,849	476,458	908,793	932,255
Operating income (loss)	20,185	18,535	34,394	32,533
Restructuring expenses			(690)	(534)
Total assets	784,941		784,941		753,434
UNITED STATES | Operating Segments [Member] | United States Industrial Services [Member]
Segment Reporting Information [Line Items]
Total revenues	187,610	333,752	446,515	591,622
Operating income (loss)	4,373	33,148	21,417	52,014
Total assets	832,988		832,988		850,434
UNITED KINGDOM | United Kingdom Building Services [Member] [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	79,158	90,584	158,176	178,220
UNITED KINGDOM | Operating Segments [Member] | United Kingdom Building Services [Member] [Member]
Segment Reporting Information [Line Items]
Total revenues	79,158	90,584	158,176	178,220
Operating income (loss)	3,497	$ 3,258	5,176	$ 6,569
Total assets	$ 112,777		$ 112,777		$ 105,081