EMCOR (EME) 10-Q 27 Oct 16 2016 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 24, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
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		60,646,476

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 504,558	$ 486,831
Accounts receivable, net	1,495,566	1,359,862
Costs and estimated earnings in excess of billings on uncompleted contracts	142,553	117,734
Inventories	43,913	37,545
Prepaid expenses and other	60,526	64,140
Total current assets	2,247,116	2,066,112
Investments, notes and other long-term receivables	8,227	8,359
Property, plant and equipment, net	128,290	122,018
Goodwill	979,339	843,170
Identifiable intangible assets, net	500,056	472,834
Other assets	31,925	30,164
Total assets	3,894,953	3,542,657
Current liabilities:
Current maturities of long-term debt and capital lease obligations	19,889	17,541
Accounts payable	465,362	488,251
Billings in excess of costs and estimated earnings on uncompleted contracts	467,077	429,235
Accrued payroll and benefits	304,032	268,033
Other accrued expenses and liabilities	190,476	209,361
Total current liabilities	1,446,836	1,412,421
Borrowings under revolving credit facility	125,000	0
Long-term debt and capital lease obligations	378,388	297,559
Other long-term obligations	360,837	352,621
Total liabilities	2,311,061	2,062,601
EMCOR Group, Inc. stockholders' equity:
Preferred stock, $0.01 par value, 1,000,000 shares authorized, zero issued and outstanding	0	0
Common stock, $0.01 par value, 200,000,000 shares authorized, 61,445,905 and 61,727,709 shares issued, respectively	614	617
Capital surplus	108,405	130,369
Accumulated other comprehensive loss	(76,616)	(76,953)
Retained earnings	1,560,489	1,432,980
Treasury stock, at cost 659,841 shares	(10,302)	(10,302)
Total EMCOR Group, Inc. stockholders' equity	1,582,590	1,476,711
Noncontrolling interests	1,302	3,345
Total equity	1,583,892	1,480,056
Total liabilities and equity	$ 3,894,953	$ 3,542,657

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Preferred stock, par value (in US dollars per share)	$ 0.01	$ 0.01
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	61,445,905	61,727,709
Treasury stock, shares	659,841	659,841

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenues	$ 1,923,174	$ 1,699,128	$ 5,601,560	$ 4,940,900
Cost of sales	1,655,130	1,463,726	4,835,667	4,249,042
Gross profit	268,044	235,402	765,893	691,858
Selling, general and administrative expenses	181,441	165,135	530,654	488,117
Restructuring expenses	539	301	1,271	742
Operating income	86,064	69,966	233,968	202,999
Interest expense	(3,479)	(2,226)	(8,973)	(6,650)
Interest income	161	157	518	515
Income from continuing operations before income taxes	82,746	67,897	225,513	196,864
Income tax provision	30,783	25,720	82,663	74,672
Income from continuing operations	51,963	42,177	142,850	122,192
Loss from discontinued operation, net of income taxes	(406)	(270)	(1,584)	(739)
Net income including noncontrolling interests	51,557	41,907	141,266	121,453
Less: Net income attributable to noncontrolling interests	(26)	(385)	(7)	(233)
Net income attributable to EMCOR Group, Inc. (in US dollars)	$ 51,531	$ 41,522	$ 141,259	$ 121,220
Basic earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$ 0.85	$ 0.66	$ 2.35	$ 1.94
From discontinued operation (in US dollars per share)	(0.01)	0	(0.03)	(0.01)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.84	0.66	2.32	1.93
Diluted earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.85	0.66	2.33	1.92
From discontinued operation (in US dollars per share)	(0.01)	0	(0.03)	(0.01)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.84	0.66	2.30	1.91
Dividends declared per common share (in US dollars per share)	$ 0.08	$ 0.08	$ 0.24	$ 0.24

Condensed Consolidated Stateme5

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interests		$ 51,557	$ 41,907	$ 141,266	$ 121,453
Other comprehensive income, net of tax:
Foreign currency translation adjustments		(255)	110	(1,056)	(78)
Post retirement plans, amortization of actuarial loss included in net income	[1]	440	554	1,393	1,646
Other comprehensive income		185	664	337	1,568
Comprehensive income		51,742	42,571	141,603	123,021
Less: Comprehensive income attributable to noncontrolling interests		(26)	(385)	(7)	(233)
Comprehensive income attributable to EMCOR Group, Inc.		$ 51,716	$ 42,186	$ 141,596	$ 122,788
[1]	Net of tax of $0.1 million and $0.2 million for the three months ended September 30, 2016 and 2015, respectively, and net of tax of $0.4 million and $0.5 million for the nine months ended September 30, 2016 and 2015, respectively.

Condensed Consolidated Stateme6

Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Post retirement plans, amortization of actuarial loss included in net income, tax	$ 0.1	$ 0.2	$ 0.4	$ 0.5

Condensed Consolidated Stateme7

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows - operating activities:
Net income including noncontrolling interests	$ 141,266	$ 121,453
Depreciation and amortization	29,117	26,806
Amortization of identifiable intangible assets	30,678	28,391
Provision for doubtful accounts	3,962	2,364
Deferred income taxes	(830)	(3,598)
Excess tax benefits from share-based compensation	(2,062)	(1,306)
Equity income from unconsolidated entities	(719)	(1,634)
Other non-cash items	6,844	7,349
Distributions from unconsolidated entities	863	3,316
Changes in operating assets and liabilities, excluding the effect of businesses acquired	(80,195)	(87,560)
Net cash provided by operating activities	128,924	95,581
Cash flows - investing activities:
Payments for acquisitions of businesses, net of cash acquired	(232,883)	(2,357)
Proceeds from sale of property, plant and equipment	1,850	2,921
Purchase of property, plant and equipment	(29,306)	(22,862)
Net cash used in investing activities	(260,339)	(22,298)
Cash flows - financing activities:
Proceeds from revolving credit facility	220,000	0
Repayments of revolving credit facility	(95,000)	0
Borrowings from long-term debt	400,000	0
Repayments of long-term debt and debt issuance costs	(317,987)	(13,136)
Repayments of capital lease obligations	(1,144)	(2,190)
Dividends paid to stockholders	(14,598)	(15,078)
Repurchase of common stock	(34,805)	(21,148)
Proceeds from exercise of stock options	508	2,378
Payments to satisfy minimum tax withholding	(4,166)	(3,866)
Issuance of common stock under employee stock purchase plan	3,583	3,147
Payments for contingent consideration arrangements	0	(403)
Distributions to noncontrolling interests	(2,050)	(9,750)
Excess tax benefits from share-based compensation	0	1,306
Net cash provided by (used in) financing activities	154,341	(58,740)
Effect of exchange rate changes on cash and cash equivalents	(5,199)	(1,199)
Increase in cash and cash equivalents	17,727	13,344
Cash and cash equivalents at beginning of year	486,831	432,056
Cash and cash equivalents at end of period	504,558	445,400
Cash paid for:
Interest	7,920	5,539
Income taxes	98,176	72,277
Non-cash financing activities:
Assets acquired under capital lease obligations	$ 1,738	$ 1,686

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, 2014		$ 1,429,387	$ 636	$ 227,885	$ (83,197)		$ 1,280,991	$ (10,302)	$ 13,374
Net income including noncontrolling interests		121,453					121,220		233
Other comprehensive income		1,568			1,568
Common stock issued under share-based compensation plans	[2]	3,619	4	3,615
Tax withholding for common stock issued under share-based compensation plans		(3,866)		(3,866)
Common stock issued under employee stock purchase plan		3,147		3,147
Common stock dividends		(15,078)					(15,234)
Common stock dividends, accrued dividend shares				156
Repurchase of common stock		(22,972)	(5)	(22,967)
Distributions to noncontrolling interests		(9,750)							(9,750)
Share-based compensation expense		6,661		6,661
Balance at Sep. 30, 2015		1,514,169	635	214,631	(81,629)		1,386,977	(10,302)	3,857
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		141,266					141,259		7
Other comprehensive income		337			337
Common stock issued under share-based compensation plans	[3]	1,492	3	498			991
Tax withholding for common stock issued under share-based compensation plans		(4,166)		(4,166)
Common stock issued under employee stock purchase plan		3,583		3,583
Common stock dividends		(14,598)					(14,741)
Common stock dividends, accrued dividend shares				143
Repurchase of common stock		(29,028)	(6)	(29,022)
Distributions to noncontrolling interests		(2,050)							(2,050)
Share-based compensation expense		7,000		7,000
Balance at Sep. 30, 2016		$ 1,583,892	$ 614	$ 108,405	$ (76,616)		$ 1,560,489	$ (10,302)	$ 1,302
[1]	Represents cumulative foreign currency translation adjustments and post retirement liability adjustments.
[2]	Includes the tax benefit associated with share-based compensation of $1.2 million for the nine months ended September 30, 2015.
[3]	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) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Tax benefit associated with share-based compensation		$ 1.2
Accounting Standards Update 2016-09 [Member]
Cumulative effect on retained earnings, net of tax	$ 1

Basis Of Presentation

Basis Of Presentation	9 Months Ended
	Sep. 30, 2016
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 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 nine months ended September 30, 2016 are not necessarily indicative of the results to be expected for the year ending December 31, 2016 .

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements In March 2016, we adopted the accounting pronouncement issued by the Financial Accounting Standards Board (“FASB”) to update guidance on how companies account for certain aspects of share-based payments to employees. This pronouncement is effective for fiscal years beginning after December 15, 2016, and interim periods within those years, with early adoption permitted. This guidance requires all income tax effects of awards to be recognized in the income statement when the awards vest or are settled and changes the presentation of excess tax benefits on the statement of cash flows. We adopted these provisions on a prospective basis. In addition, this pronouncement changes guidance on: (a) accounting for forfeitures of share-based awards and (b) employers’ accounting for an employee’s use of shares to satisfy the employer’s statutory income tax withholding obligation. As a result of the adoption, we recorded an adjustment to retained earnings of $1.0 million to recognize net operating loss carryforwards, net of a valuation allowance, attributable to excess tax benefits on stock compensation that had not been previously recognized to additional paid in capital. The adoption of this pronouncement 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. On January 1, 2016, we adopted the accounting pronouncement issued by the FASB which eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, an acquirer will recognize a measurement-period adjustment during the period in which it determines the amount of the adjustment. The adoption of this pronouncement did not have a material impact on our financial position and/or results of operations. On January 1, 2016, we adopted the accounting pronouncement issued by the FASB to update the guidance related to the presentation of debt issuance costs. This guidance requires debt issuance costs, related to a recognized debt liability, be presented in the balance sheet as a direct deduction from the carrying amount of the related debt liability rather than being presented as an asset. We adopted this pronouncement on a retrospective basis, and the adoption did not have a material impact on our financial position and/or results of operations. In November 2015, an accounting pronouncement was issued by the 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 all deferred tax assets and liabilities, including valuation allowances, be classified as noncurrent. This pronouncement is effective for fiscal years beginning after December 15, 2016, with early adoption permitted. We intend to adopt this pronouncement on January 1, 2017, and the adoption will not have a material impact 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 have not yet selected a transition method nor have we determined the effect that the adoption of the pronouncement may have on our financial position and/or results of operations.

Acquisitions Of Businesses

Acquisitions Of Businesses	9 Months Ended
	Sep. 30, 2016
Business Combinations [Abstract]
Acquisitions Of Businesses	Acquisitions of Businesses 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 $36.5 million and other net assets of $3.9 million and have preliminarily ascribed $119.5 million to goodwill and $41.5 million to identifiable intangible assets. Goodwill is calculated as the excess of the consideration transferred over the net assets acquired and represents the future economic benefits expected from this strategic acquisition. 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. 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. On June 1, 2015 and October 13, 2015 , we acquired two companies, each for an immaterial amount. These companies primarily provide mechanical construction services, and their results have been included in our United States mechanical construction and facilities services segment. The purchase price allocations for the businesses acquired in 2016 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.

Disposition of Assets

Disposition of Assets	9 Months Ended
	Sep. 30, 2016
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 announced during the quarter ended June 30, 2013 our decision to withdraw from the construction market in the United Kingdom. During the third quarter of 2014, we ceased construction operations in the United Kingdom. The results of the construction operations of our United Kingdom segment for all periods are presented in our Condensed Consolidated Financial Statements as discontinued operations. The results of discontinued operations are as follows (in thousands): For the three months ended September 30, For the nine months ended September 30, 2016 2015 2016 2015 Revenues $ 40 $ 149 $ 108 $ 509 Loss from discontinued operation, net of income taxes $ (406 ) $ (270 ) $ (1,584 ) $ (739 ) Diluted loss per share from discontinued operation $ (0.01 ) $ (0.00 ) $ (0.03 ) $ (0.01 ) Included in the Condensed Consolidated Balance Sheets at September 30, 2016 and December 31, 2015 are the following major classes of assets and liabilities associated with the discontinued operation (in thousands): September 30, December 31, Assets of discontinued operation: Current assets $ 1,689 $ 2,525 Liabilities of discontinued operation: Current liabilities $ 3,644 $ 4,407 At September 30, 2016, 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 September 30, 2016, there remained $0.1 million of obligations related to employee severance, which are expected to be paid in 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	9 Months Ended
	Sep. 30, 2016
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 nine months ended September 30, 2016 and 2015 (in thousands, except share and per share data): For the three months ended September 30, 2016 2015 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 51,937 $ 41,792 Loss from discontinued operation, net of income taxes (406 ) (270 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 51,531 $ 41,522 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 60,889,484 62,901,923 Effect of dilutive securities—Share-based awards 428,573 490,560 Shares used to compute diluted earnings (loss) per common share 61,318,057 63,392,483 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.85 $ 0.66 From discontinued operation $ (0.01 ) $ (0.00 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.84 $ 0.66 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.85 $ 0.66 From discontinued operation $ (0.01 ) $ (0.00 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.84 $ 0.66 For the nine months ended September 30, 2016 2015 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 142,843 $ 121,959 Loss from discontinued operation, net of income taxes (1,584 ) (739 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 141,259 $ 121,220 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 60,866,532 62,921,956 Effect of dilutive securities—Share-based awards 423,856 521,071 Shares used to compute diluted earnings (loss) per common share 61,290,388 63,443,027 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 2.35 $ 1.94 From discontinued operation $ (0.03 ) $ (0.01 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 2.32 $ 1.93 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 2.33 $ 1.92 From discontinued operation $ (0.03 ) $ (0.01 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 2.30 $ 1.91 There were no anti-dilutive share-based awards for the three and nine months ended September 30, 2016 and 2015, respectively.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2016
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): September 30, December 31, Raw materials and construction materials $ 24,144 $ 23,239 Work in process 19,769 14,306 $ 43,913 $ 37,545

Debt

Debt	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Debt	Debt Debt in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): September 30, December 31, Revolving credit facility $ 125,000 $ — Term loan 400,000 315,000 Unamortized debt issuance costs (5,734 ) (3,813 ) Capitalized lease obligations 3,977 3,869 Other 34 44 523,277 315,100 Less: current maturities 19,889 17,541 $ 503,388 $ 297,559 Credit Facilities Until August 3, 2016, we had a credit agreement (the “2013 Credit Agreement”), as amended, 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”). The 2013 Credit Agreement was effective November 25, 2013. Effective 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 and most of the assets of most of our subsidiaries. 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 September 30, 2016 with respect to the 2016 Credit Agreement and December 31, 2015 with respect to the 2013 Credit Agreement. 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 0.20% of the unused amount as of September 30, 2016 . 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 ( 0.52% at September 30, 2016 ) 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 ( 3.50% at September 30, 2016 ), (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 September 30, 2016 was 1.77% . 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. In connection with the amendment and restatement of the 2013 Credit Agreement, $0.1 million attributable to the acceleration of expense for debt issuance costs in connection with the 2013 Credit Agreement was recorded as part of interest expense during the third quarter of 2016. We are required to make principal payments on the 2016 Term Loan in installments on the last day of March, June, September and December of each year, commencing with the calendar quarter ending December 31, 2016, in the amount of $5.0 million , with a payment of all unpaid principal and interest due on August 3, 2021. As of September 30, 2016 and December 31, 2015 , the balance of the 2016 Term Loan and the 2013 Term Loan was $400.0 million and $315.0 million , respectively. As of September 30, 2016 and December 31, 2015 , we had approximately $115.4 million and $99.0 million of letters of credit outstanding, respectively. There were $125.0 million in borrowings outstanding under the 2016 Revolving Credit Facility as of September 30, 2016 . There were no borrowings outstanding under the 2013 Revolving Credit Facility as of December 31, 2015 .

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2016
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 September 30, 2016 and December 31, 2015 (in thousands): Assets at Fair Value as of September 30, 2016 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 504,558 $ — $ — $ 504,558 Restricted cash (2) 2,224 — — 2,224 Deferred compensation plan assets (3) 11,701 — — 11,701 Total $ 518,483 $ — $ — $ 518,483 Assets at Fair Value as of December 31, 2015 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 486,831 $ — $ — $ 486,831 Restricted cash (2) 4,232 — — 4,232 Deferred compensation plan assets (3) 7,497 — — 7,497 Total $ 498,560 $ — $ — $ 498,560 ________ (1) Cash and cash equivalents include money market funds with original maturity dates of three months or less, which are Level 1 assets. At September 30, 2016 and December 31, 2015 , we had $157.6 million and $151.4 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	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended September 30, 2016 and 2015 , our income tax provision from continuing operations was $30.8 million and $25.7 million , respectively, based on effective income tax rates, before discrete items and less amounts attributable to noncontrolling interests, of 38.1% and 38.0% , respectively. The actual income tax rates on income from continuing operations, less amounts attributable to noncontrolling interests, for the three months ended September 30, 2016 and 2015 , inclusive of discrete items, were 37.2% and 38.1% , respectively. For the nine months ended September 30, 2016 and 2015 , our income tax provision from continuing operations was $82.7 million and $74.7 million , respectively, based on effective income tax rates, before discrete items and less amounts attributable to noncontrolling interests, of 37.8% and 37.9% , respectively. The actual income tax rates on income from continuing operations, less amounts attributable to noncontrolling interests, for the nine months ended September 30, 2016 and 2015 , inclusive of discrete items, were 36.7% and 38.0% , respectively. The increase in the 2016 income tax provision was primarily due to increased income from continuing operations. The decrease in the actual income tax rate on income from continuing operations for the three months ended September 30, 2016 was primarily due to the reversal of $0.8 million of reserves for uncertain income tax positions. The decrease in the actual income tax rate for the nine months ended September 30, 2016 was primarily due to $2.1 million of tax benefits recognized upon the issuance of common stock under share-based compensation plans. As of September 30, 2016 and December 31, 2015 , the amount of unrecognized income tax benefits was $3.9 million and $4.8 million (of which $2.2 million and $3.0 million , if recognized, would favorably affect our effective income tax rate), respectively. We report interest expense related to unrecognized income tax benefits in the income tax provision. As of September 30, 2016 and December 31, 2015 , we had approximately $0.4 million of accrued interest related to unrecognized income tax benefits included as a liability in the Condensed Consolidated Balance Sheets. For each of the three and nine months ended September 30, 2016 , less than $0.1 million of interest income was recognized. For each of the three and nine months ended September 30, 2015 , less than $0.1 million of interest expense was recognized. It is reasonably possible that approximately $3.3 million of unrecognized income tax benefits at September 30, 2016 , 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 and the expiration of applicable statutes of limitations. 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 2008 through 2014.

Common Stock

Common Stock	9 Months Ended
	Sep. 30, 2016
Stockholders' Equity Note [Abstract]
Common Stock	Common Stock As of September 30, 2016 and December 31, 2015 , there were 60,786,064 and 61,067,868 shares of our common stock outstanding, respectively. During the three months ended September 30, 2016 and 2015 , 47,050 and 66,223 shares of common stock, respectively, were issued primarily upon: (a) the purchase of common stock pursuant to our employee stock purchase plan, (b) the exercise of stock options and (c) the satisfaction of required conditions under certain of our share-based compensation plans. During the nine months ended September 30, 2016 and 2015 , 353,116 and 347,713 shares of common stock, respectively, were issued primarily upon: (a) the satisfaction of required conditions under certain of our share-based compensation plans, (b) the exercise of stock options and (c) the purchase of common stock pursuant to our employee stock purchase plan. 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 2016, we have repurchased approximately 0.6 million shares of our common stock for approximately $29.0 million . Since the inception of the repurchase programs through September 30, 2016 , we have repurchased 10.5 million shares of our common stock for approximately $424.9 million . As of September 30, 2016 , there remained authorization for us to repurchase approximately $225.1 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 credit agreement placing limitations on such repurchases. The repurchase programs have been and will be funded from our operations.

Retirement Plans

Retirement Plans	9 Months Ended
	Sep. 30, 2016
Compensation and Retirement Disclosure [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 nine months ended September 30, 2016 and 2015 were as follows (in thousands): For the three months ended September 30, For the nine months ended September 30, 2016 2015 2016 2015 Interest cost $ 2,465 $ 2,938 $ 7,846 $ 8,718 Expected return on plan assets (3,398 ) (4,098 ) (10,816 ) (12,159 ) Amortization of unrecognized loss 489 640 1,556 1,899 Net periodic pension cost $ (444 ) $ (520 ) $ (1,414 ) $ (1,542 ) Employer Contributions For the nine months ended September 30, 2016 , our United Kingdom subsidiary contributed approximately $3.4 million to the UK Plan and anticipates contributing an additional $1.4 million during the remainder of 2016.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
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. An investigation of the matter could not determine who was responsible for the explosion. As a result of the explosion, lawsuits have been commenced against various parties, but, to date, no lawsuits have been commenced against our subsidiary with respect to personal injury or damage to property as a consequence of the explosion. However, 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. In the most recent filing with the arbitrator, the Mechanical Contractor has stated claims against our subsidiary for alleged violations of the Connecticut and Massachusetts Unfair and Deceptive Trade Practices Acts in the ongoing arbitration proceeding. Further, 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. Other potential claims may exist that have not yet 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. 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 reserves have not been established 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 $0.5 million and $1.3 million for the three and nine months ended September 30, 2016, respectively, and $0.3 million and $0.7 million for the three and nine months ended September 30, 2015, respectively. As of September 30, 2016 , the balance of these restructuring obligations yet to be paid was $0.5 million , the majority of which is expected to be paid during 2016. No material expenses in connection with restructuring from continuing operations are expected to be incurred during the remainder of 2016. The changes in restructuring activity by reportable segments during the nine months ended September 30, 2016 and 2015 were as follows (in thousands): United States United States United States building services segment Total Balance at December 31, 2014 $ 255 $ 26 $ — $ 281 Charges (106 ) 6 842 742 Payments (149 ) (32 ) (384 ) (565 ) Balance at September 30, 2015 $ — $ — $ 458 $ 458 Balance at December 31, 2015 $ — $ — $ 81 $ 81 Charges — 401 870 1,271 Payments — (108 ) (770 ) (878 ) Balance at September 30, 2016 $ — $ 293 $ 181 $ 474

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information 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; 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 segment “United States industrial services” principally consists of those operations which provide industrial maintenance and services, mainly 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 nine months ended September 30, 2016 and 2015 (in thousands): For the three months ended September 30, 2016 2015 Revenues from unrelated entities: United States electrical construction and facilities services $ 458,553 $ 344,389 United States mechanical construction and facilities services 697,733 587,522 United States building services 454,800 428,270 United States industrial services 239,052 241,946 Total United States operations 1,850,138 1,602,127 United Kingdom building services 73,036 97,001 Total worldwide operations $ 1,923,174 $ 1,699,128 Total revenues: United States electrical construction and facilities services $ 465,476 $ 348,327 United States mechanical construction and facilities services 702,464 592,077 United States building services 469,191 442,674 United States industrial services 239,489 242,335 Less intersegment revenues (26,482 ) (23,286 ) Total United States operations 1,850,138 1,602,127 United Kingdom building services 73,036 97,001 Total worldwide operations $ 1,923,174 $ 1,699,128 NOTE 13 Segment Information - (Continued) For the nine months ended September 30, 2016 2015 Revenues from unrelated entities: United States electrical construction and facilities services $ 1,227,474 $ 1,009,585 United States mechanical construction and facilities services 1,939,518 1,652,551 United States building services 1,353,248 1,303,389 United States industrial services 830,064 699,839 Total United States operations 5,350,304 4,665,364 United Kingdom building services 251,256 275,536 Total worldwide operations $ 5,601,560 $ 4,940,900 Total revenues: United States electrical construction and facilities services $ 1,249,681 $ 1,016,013 United States mechanical construction and facilities services 1,950,814 1,663,259 United States building services 1,393,636 1,341,392 United States industrial services 831,111 701,226 Less intersegment revenues (74,938 ) (56,526 ) Total United States operations 5,350,304 4,665,364 United Kingdom building services 251,256 275,536 Total worldwide operations $ 5,601,560 $ 4,940,900 For the three months ended September 30, 2016 2015 Operating income (loss): United States electrical construction and facilities services $ 30,927 $ 25,528 United States mechanical construction and facilities services 39,447 26,926 United States building services 22,568 16,027 United States industrial services 14,586 14,340 Total United States operations 107,528 82,821 United Kingdom building services 2,591 3,358 Corporate administration (23,516 ) (15,912 ) Restructuring expenses (539 ) (301 ) Total worldwide operations 86,064 69,966 Other corporate items: Interest expense (3,479 ) (2,226 ) Interest income 161 157 Income from continuing operations before income taxes $ 82,746 $ 67,897 NOTE 13 Segment Information - (Continued) For the nine months ended September 30, 2016 2015 Operating income (loss): United States electrical construction and facilities services $ 70,645 $ 67,479 United States mechanical construction and facilities services 101,504 80,191 United States building services 54,761 54,944 United States industrial services 66,600 44,588 Total United States operations 293,510 247,202 United Kingdom building services 9,160 8,570 Corporate administration (67,431 ) (52,031 ) Restructuring expenses (1,271 ) (742 ) Total worldwide operations 233,968 202,999 Other corporate items: Interest expense (8,973 ) (6,650 ) Interest income 518 515 Income from continuing operations before income taxes $ 225,513 $ 196,864 September 30, December 31, Total assets: United States electrical construction and facilities services $ 623,446 $ 372,525 United States mechanical construction and facilities services 929,994 894,366 United States building services 778,507 721,653 United States industrial services 898,662 883,338 Total United States operations 3,230,609 2,871,882 United Kingdom building services 108,836 133,782 Corporate administration 555,508 536,993 Total worldwide operations $ 3,894,953 $ 3,542,657

Fair Value Measurements (Policy

Fair Value Measurements (Policy)	9 Months Ended
	Sep. 30, 2016
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)	9 Months Ended
	Sep. 30, 2016
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 September 30, For the nine months ended September 30, 2016 2015 2016 2015 Revenues $ 40 $ 149 $ 108 $ 509 Loss from discontinued operation, net of income taxes $ (406 ) $ (270 ) $ (1,584 ) $ (739 ) Diluted loss per share from discontinued operation $ (0.01 ) $ (0.00 ) $ (0.03 ) $ (0.01 ) Included in the Condensed Consolidated Balance Sheets at September 30, 2016 and December 31, 2015 are the following major classes of assets and liabilities associated with the discontinued operation (in thousands): September 30, December 31, Assets of discontinued operation: Current assets $ 1,689 $ 2,525 Liabilities of discontinued operation: Current liabilities $ 3,644 $ 4,407

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2016
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 nine months ended September 30, 2016 and 2015 (in thousands, except share and per share data): For the three months ended September 30, 2016 2015 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 51,937 $ 41,792 Loss from discontinued operation, net of income taxes (406 ) (270 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 51,531 $ 41,522 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 60,889,484 62,901,923 Effect of dilutive securities—Share-based awards 428,573 490,560 Shares used to compute diluted earnings (loss) per common share 61,318,057 63,392,483 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.85 $ 0.66 From discontinued operation $ (0.01 ) $ (0.00 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.84 $ 0.66 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 0.85 $ 0.66 From discontinued operation $ (0.01 ) $ (0.00 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 0.84 $ 0.66 For the nine months ended September 30, 2016 2015 Numerator: Income from continuing operations attributable to EMCOR Group, Inc. common stockholders $ 142,843 $ 121,959 Loss from discontinued operation, net of income taxes (1,584 ) (739 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 141,259 $ 121,220 Denominator: Weighted average shares outstanding used to compute basic earnings (loss) per common share 60,866,532 62,921,956 Effect of dilutive securities—Share-based awards 423,856 521,071 Shares used to compute diluted earnings (loss) per common share 61,290,388 63,443,027 Basic earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 2.35 $ 1.94 From discontinued operation $ (0.03 ) $ (0.01 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 2.32 $ 1.93 Diluted earnings (loss) per common share: From continuing operations attributable to EMCOR Group, Inc. common stockholders $ 2.33 $ 1.92 From discontinued operation $ (0.03 ) $ (0.01 ) Net income attributable to EMCOR Group, Inc. common stockholders $ 2.30 $ 1.91

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2016
Inventory Disclosure [Abstract]
Inventories	Inventories in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): September 30, December 31, Raw materials and construction materials $ 24,144 $ 23,239 Work in process 19,769 14,306 $ 43,913 $ 37,545

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Schedule Of Debt	Debt in the accompanying Condensed Consolidated Balance Sheets consisted of the following amounts (in thousands): September 30, December 31, Revolving credit facility $ 125,000 $ — Term loan 400,000 315,000 Unamortized debt issuance costs (5,734 ) (3,813 ) Capitalized lease obligations 3,977 3,869 Other 34 44 523,277 315,100 Less: current maturities 19,889 17,541 $ 503,388 $ 297,559

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2016
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 September 30, 2016 and December 31, 2015 (in thousands): Assets at Fair Value as of September 30, 2016 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 504,558 $ — $ — $ 504,558 Restricted cash (2) 2,224 — — 2,224 Deferred compensation plan assets (3) 11,701 — — 11,701 Total $ 518,483 $ — $ — $ 518,483 Assets at Fair Value as of December 31, 2015 Asset Category Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 486,831 $ — $ — $ 486,831 Restricted cash (2) 4,232 — — 4,232 Deferred compensation plan assets (3) 7,497 — — 7,497 Total $ 498,560 $ — $ — $ 498,560 ________ (1) Cash and cash equivalents include money market funds with original maturity dates of three months or less, which are Level 1 assets. At September 30, 2016 and December 31, 2015 , we had $157.6 million and $151.4 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)	9 Months Ended
	Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]
Components Of Net Periodic Pension Cost	The components of net periodic pension cost of the UK Plan for the three and nine months ended September 30, 2016 and 2015 were as follows (in thousands): For the three months ended September 30, For the nine months ended September 30, 2016 2015 2016 2015 Interest cost $ 2,465 $ 2,938 $ 7,846 $ 8,718 Expected return on plan assets (3,398 ) (4,098 ) (10,816 ) (12,159 ) Amortization of unrecognized loss 489 640 1,556 1,899 Net periodic pension cost $ (444 ) $ (520 ) $ (1,414 ) $ (1,542 )

Commitments and Contingencies R

Commitments and Contingencies Restructuring and Related Activities (Tables)	9 Months Ended
	Sep. 30, 2016
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 nine months ended September 30, 2016 and 2015 were as follows (in thousands): United States United States United States building services segment Total Balance at December 31, 2014 $ 255 $ 26 $ — $ 281 Charges (106 ) 6 842 742 Payments (149 ) (32 ) (384 ) (565 ) Balance at September 30, 2015 $ — $ — $ 458 $ 458 Balance at December 31, 2015 $ — $ — $ 81 $ 81 Charges — 401 870 1,271 Payments — (108 ) (770 ) (878 ) Balance at September 30, 2016 $ — $ 293 $ 181 $ 474

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2016
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 nine months ended September 30, 2016 and 2015 (in thousands): For the three months ended September 30, 2016 2015 Revenues from unrelated entities: United States electrical construction and facilities services $ 458,553 $ 344,389 United States mechanical construction and facilities services 697,733 587,522 United States building services 454,800 428,270 United States industrial services 239,052 241,946 Total United States operations 1,850,138 1,602,127 United Kingdom building services 73,036 97,001 Total worldwide operations $ 1,923,174 $ 1,699,128 Total revenues: United States electrical construction and facilities services $ 465,476 $ 348,327 United States mechanical construction and facilities services 702,464 592,077 United States building services 469,191 442,674 United States industrial services 239,489 242,335 Less intersegment revenues (26,482 ) (23,286 ) Total United States operations 1,850,138 1,602,127 United Kingdom building services 73,036 97,001 Total worldwide operations $ 1,923,174 $ 1,699,128 NOTE 13 Segment Information - (Continued) For the nine months ended September 30, 2016 2015 Revenues from unrelated entities: United States electrical construction and facilities services $ 1,227,474 $ 1,009,585 United States mechanical construction and facilities services 1,939,518 1,652,551 United States building services 1,353,248 1,303,389 United States industrial services 830,064 699,839 Total United States operations 5,350,304 4,665,364 United Kingdom building services 251,256 275,536 Total worldwide operations $ 5,601,560 $ 4,940,900 Total revenues: United States electrical construction and facilities services $ 1,249,681 $ 1,016,013 United States mechanical construction and facilities services 1,950,814 1,663,259 United States building services 1,393,636 1,341,392 United States industrial services 831,111 701,226 Less intersegment revenues (74,938 ) (56,526 ) Total United States operations 5,350,304 4,665,364 United Kingdom building services 251,256 275,536 Total worldwide operations $ 5,601,560 $ 4,940,900 For the three months ended September 30, 2016 2015 Operating income (loss): United States electrical construction and facilities services $ 30,927 $ 25,528 United States mechanical construction and facilities services 39,447 26,926 United States building services 22,568 16,027 United States industrial services 14,586 14,340 Total United States operations 107,528 82,821 United Kingdom building services 2,591 3,358 Corporate administration (23,516 ) (15,912 ) Restructuring expenses (539 ) (301 ) Total worldwide operations 86,064 69,966 Other corporate items: Interest expense (3,479 ) (2,226 ) Interest income 161 157 Income from continuing operations before income taxes $ 82,746 $ 67,897 NOTE 13 Segment Information - (Continued) For the nine months ended September 30, 2016 2015 Operating income (loss): United States electrical construction and facilities services $ 70,645 $ 67,479 United States mechanical construction and facilities services 101,504 80,191 United States building services 54,761 54,944 United States industrial services 66,600 44,588 Total United States operations 293,510 247,202 United Kingdom building services 9,160 8,570 Corporate administration (67,431 ) (52,031 ) Restructuring expenses (1,271 ) (742 ) Total worldwide operations 233,968 202,999 Other corporate items: Interest expense (8,973 ) (6,650 ) Interest income 518 515 Income from continuing operations before income taxes $ 225,513 $ 196,864 September 30, December 31, Total assets: United States electrical construction and facilities services $ 623,446 $ 372,525 United States mechanical construction and facilities services 929,994 894,366 United States building services 778,507 721,653 United States industrial services 898,662 883,338 Total United States operations 3,230,609 2,871,882 United Kingdom building services 108,836 133,782 Corporate administration 555,508 536,993 Total worldwide operations $ 3,894,953 $ 3,542,657

New Accounting Pronouncements N

New Accounting Pronouncements New Accounting Pronouncements (Details) $ in Millions	Sep. 30, 2016USD ($)
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment to retained earnings for tax benefits	$ 1

Acquisitions Of Businesses (Det

Acquisitions Of Businesses (Details) $ in Thousands	Apr. 15, 2016USD ($)Company	Apr. 01, 2016Company	Oct. 13, 2015Company	Jun. 01, 2015Company	Sep. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Business Acquisition [Line Items]
Goodwill					$ 979,339	$ 843,170
Number of businesses acquired | Company	1	1	1	1
Ardent [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%
Purchase price	$ 201,400
Working capital acquired	36,500
Other net assets	3,900
Goodwill	119,500
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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Loss from discontinued operation, net of income taxes	$ (406)	$ (270)	$ (1,584)	$ (739)
From discontinued operation (in US dollars per share)	$ (0.01)	$ 0	$ (0.03)	$ (0.01)
Restructuring reserve	$ 474	$ 458	$ 474	$ 458	$ 81	$ 281
UNITED KINGDOM | Discontinued Operations [Member] | United Kingdom Construction [Member]
Income Statement [Abstract]
Revenues	40	149	108	509
Loss from discontinued operation, net of income taxes	$ (406)	$ (270)	$ (1,584)	$ (739)
From discontinued operation (in US dollars per share)	$ (0.01)	$ 0	$ (0.03)	$ (0.01)
Assets of discontinued operation:
Current assets	$ 1,689		$ 1,689		2,525
Liabilities of discontinued operation:
Current liabilities	3,644		3,644		$ 4,407
SeveranceandFacilityClosing [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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator
Income from continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars)	$ 51,937	$ 41,792	$ 142,843	$ 121,959
Loss from discontinued operation, net of income taxes (in US dollars)	(406)	(270)	(1,584)	(739)
Net income attributable to EMCOR Group, Inc. (in US dollars)	$ 51,531	$ 41,522	$ 141,259	$ 121,220
Denominator
Weighted average shares outstanding used to compute basic earnings (loss) per common share (in shares)	60,889,484	62,901,923	60,866,532	62,921,956
Effect of dilutive securities-Share-based awards (in shares)	428,573	490,560	423,856	521,071
Shares used to compute diluted earnings (loss) per common share (in shares)	61,318,057	63,392,483	61,290,388	63,443,027
Basic earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$ 0.85	$ 0.66	$ 2.35	$ 1.94
From discontinued operation (in US dollars per share)	(0.01)	0	(0.03)	(0.01)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.84	0.66	2.32	1.93
Diluted earnings (loss) per common share:
From continuing operations attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	0.85	0.66	2.33	1.92
From discontinued operation (in US dollars per share)	(0.01)	0	(0.03)	(0.01)
Net income attributable to EMCOR Group, Inc. common stockholders (in US dollars per share)	$ 0.84	$ 0.66	$ 2.30	$ 1.91
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive restricted stock units excluded from calculation of diluted earnings per share (in shares)	0	0	0	0

Inventories (Inventories) (Deta

Inventories (Inventories) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials and construction materials	$ 24,144	$ 23,239
Work in process	19,769	14,306
Inventories	$ 43,913	$ 37,545

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015	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 (0.52% at September 30, 2016) 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 (3.50% at September 30, 2016), (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 September 30, 2016 was 1.77%. 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.
Letters of credit outstanding (in US dollars)	$ 115,400,000	$ 115,400,000	$ 99,000,000
Borrowings under revolving credit facility (in US dollars)	125,000,000	$ 125,000,000	0
2013 Credit Agreement
Line of Credit Facility [Line Items]
Write off of deferred debt issuance costs (in US dollars)	$ 100,000
2013 Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity (in US dollars)				$ 750,000,000
Borrowings under revolving credit facility (in US dollars)			0
2013 Term Loan
Line of Credit Facility [Line Items]
Term Loan (in US dollars)			$ 315,000,000	$ 350,000,000
2016 Credit Agreement
Line of Credit Facility [Line Items]
Expiration date of revolving credit facility		Aug. 3, 2021
Interest rate	1.77%	1.77%
Debt issuance costs, capitalized (in US dollars)	$ 3,000,000	$ 3,000,000
2016 Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity (in US dollars)	900,000,000	900,000,000
Increase in borrowing capacity (in US dollars)	1,300,000,000	1,300,000,000
Letters of credit maximum borrowing capacity (in US dollars)	300,000,000	$ 300,000,000
Commitment fee percentage of unused amount		0.20%
Borrowings under revolving credit facility (in US dollars)	125,000,000	$ 125,000,000
2016 Term Loan
Line of Credit Facility [Line Items]
Term Loan (in US dollars)	$ 400,000,000	400,000,000
Periodic principal payment on term loan (in US dollars)		$ 5,000,000
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%	1.00%
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%	1.75%
Base Rate [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.00%
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 [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Commercial lending rate	3.50%	3.50%
Federal Funds Rate [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.50%
London Interbank Offered Rate (LIBOR) [Member] | 2016 Credit Agreement
Line of Credit Facility [Line Items]
Commercial lending rate	0.52%	0.52%
Basis spread on variable rate		1.00%
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%

Debt (Schedule Of Debt) (Detail

Debt (Schedule Of Debt) (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2013
Debt Instrument [Line Items]
Revolving credit facility	$ 125,000,000	$ 0
Unamortized debt issuance costs	(5,734,000)	(3,813,000)
Capitalized lease obligations	3,977,000	3,869,000
Other	34,000	44,000
Total debt	523,277,000	315,100,000
Less: current maturities	19,889,000	17,541,000
Total long-term debt	503,388,000	297,559,000
2016 Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility	125,000,000
2013 Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility		0
2016 Term Loan
Debt Instrument [Line Items]
Term loan	$ 400,000,000
2013 Term Loan
Debt Instrument [Line Items]
Term loan		$ 315,000,000	$ 350,000,000

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		Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	$ 504,558	$ 486,831
Restricted cash	[2]	2,224	4,232
Deferred compensation plan assets	[3]	11,701	7,497
Total		518,483	498,560
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	504,558	486,831
Restricted cash	[2]	2,224	4,232
Deferred compensation plan assets	[3]	11,701	7,497
Total		518,483	498,560
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		$ 157,600	$ 151,400
[1]	Cash and cash equivalents include money market funds with original maturity dates of three months or less, which are Level 1 assets. At September 30, 2016 and December 31, 2015, we had $157.6 million and $151.4 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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Income tax provision	$ 30,783	$ 25,720	$ 82,663	$ 74,672
Effective income tax rates	38.10%	38.00%	37.80%	37.90%
Actual income tax rates	37.20%	38.10%	36.70%	38.00%
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations	$ 800
Excess tax benefit from share-based compensation, tax provision			$ 2,100
Unrecognized income tax benefits	3,900		3,900		$ 4,800
Unrecognized income tax benefits, if recognized, that would favorably affect the effective income tax rate	2,200		2,200		3,000
Accrued interest expense related to unrecognized income tax benefits	400		400		$ 400
Interest income related to unrecognized income tax benefits	100		100
Interest expense related to unrecognized income tax benefits		$ 100		$ 100
Unrecognized income tax benefits to be recognized in the next twelve months	$ 3,300		$ 3,300

Common Stock (Details)

Common Stock (Details) - USD ($)	3 Months Ended		9 Months Ended		57 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015	Oct. 28, 2015	Oct. 23, 2014	Dec. 05, 2013	Sep. 26, 2011
Equity, Class of Treasury Stock [Line Items]
Common stock, outstanding	60,786,064		60,786,064			61,067,868
Common stock, issued	47,050	66,223	353,116	347,713
Stock repurchased (in US dollars)			$ 29,028,000	$ 22,972,000
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased					10,500,000
Stock repurchased (in US dollars)			6,000	$ 5,000	$ 424,900,000
Remaining authorized repurchase amount (in US dollars)	$ 225,100,000		$ 225,100,000
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
Number of shares repurchased			600,000
Stock repurchased (in US dollars)			$ 29,000,000
Common Stock [Member] | RepurchaseProgramOct282015
Equity, Class of Treasury Stock [Line Items]
Stock repurchase, authorized amount (in US dollars)							$ 200,000,000

Retirement Plans (Narrative) (D

Retirement Plans (Narrative) (Details) - United Kingdom Subsidiary [Member] - Foreign Pension Plans, Defined Benefit [Member] $ in Millions	9 Months Ended
	Sep. 30, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Contribution of U.K. subsidiary to its defined benefit pension plan	$ 3.4
Anticipated additional contribution	$ 1.4

Retirement Plans (Components Of

Retirement Plans (Components Of Net Periodic Pension Benefit Cost) (Details) - United Kingdom Subsidiary [Member] - Foreign Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 2,465	$ 2,938	$ 7,846	$ 8,718
Expected return on plan assets	(3,398)	(4,098)	(10,816)	(12,159)
Amortization of unamortized loss	489	640	1,556	1,899
Net periodic pension cost	$ (444)	$ (520)	$ (1,414)	$ (1,542)

Commitments and Contingencies N

Commitments and Contingencies Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Loss Contingencies [Line Items]
Restructuring expenses	$ 539	$ 301	$ 1,271	$ 742
Restructuring reserve	474	458	474	458	$ 81	$ 281
Employee Severance [Member]
Loss Contingencies [Line Items]
Restructuring expenses	$ 539	$ 301	$ 1,271	$ 742

Schedule of Restructuring Activ

Schedule of Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 474	$ 458	$ 474	$ 458	$ 81	$ 281
Restructuring expenses	539	301	1,271	742
Payments for restructuring			(878)	(565)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	539	301	1,271	742
UNITED STATES | Operating Segments [Member] | United States Electrical Construction And Facilities Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	0	0	0	0	0	255
Reversal of restructuring expenses				(106)
Restructuring expenses			0
Payments for restructuring			0	(149)
UNITED STATES | Operating Segments [Member] | United States Mechanical Construction And Facilities Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	293	0	293	0	0	26
Restructuring expenses			401	6
Payments for restructuring			(108)	(32)
UNITED STATES | Operating Segments [Member] | United States Building Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 181	$ 458	181	458	$ 81	$ 0
Restructuring expenses			870	842
Payments for restructuring			$ (770)	$ (384)

Segment Information (Informatio

Segment Information (Information About Industry Segments And Geographic Areas) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenues from unrelated entities	$ 1,923,174	$ 1,699,128	$ 5,601,560	$ 4,940,900
Total revenues	1,923,174	1,699,128	5,601,560	4,940,900
Operating income (loss)	86,064	69,966	233,968	202,999
Restructuring expenses	(539)	(301)	(1,271)	(742)
Interest expense	(3,479)	(2,226)	(8,973)	(6,650)
Interest income	161	157	518	515
Income from continuing operations before income taxes	82,746	67,897	225,513	196,864
Total assets	3,894,953		3,894,953		$ 3,542,657
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenues	(26,482)	(23,286)	(74,938)	(56,526)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(23,516)	(15,912)	(67,431)	(52,031)
Total assets	555,508		555,508		536,993
UNITED STATES
Segment Reporting Information [Line Items]
Revenues from unrelated entities	1,850,138	1,602,127	5,350,304	4,665,364
Total revenues	1,850,138	1,602,127	5,350,304	4,665,364
Operating income (loss)	107,528	82,821	293,510	247,202
Total assets	3,230,609		3,230,609		2,871,882
UNITED STATES | United States Electrical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	458,553	344,389	1,227,474	1,009,585
UNITED STATES | United States Mechanical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	697,733	587,522	1,939,518	1,652,551
UNITED STATES | United States Building Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	454,800	428,270	1,353,248	1,303,389
UNITED STATES | United States Industrial Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	239,052	241,946	830,064	699,839
UNITED STATES | Operating Segments [Member] | United States Electrical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Total revenues	465,476	348,327	1,249,681	1,016,013
Operating income (loss)	30,927	25,528	70,645	67,479
Restructuring expenses			0
Total assets	623,446		623,446		372,525
UNITED STATES | Operating Segments [Member] | United States Mechanical Construction And Facilities Services [Member]
Segment Reporting Information [Line Items]
Total revenues	702,464	592,077	1,950,814	1,663,259
Operating income (loss)	39,447	26,926	101,504	80,191
Restructuring expenses			(401)	(6)
Total assets	929,994		929,994		894,366
UNITED STATES | Operating Segments [Member] | United States Building Services [Member]
Segment Reporting Information [Line Items]
Total revenues	469,191	442,674	1,393,636	1,341,392
Operating income (loss)	22,568	16,027	54,761	54,944
Restructuring expenses			(870)	(842)
Total assets	778,507		778,507		721,653
UNITED STATES | Operating Segments [Member] | United States Industrial Services [Member]
Segment Reporting Information [Line Items]
Total revenues	239,489	242,335	831,111	701,226
Operating income (loss)	14,586	14,340	66,600	44,588
Total assets	898,662		898,662		883,338
UNITED KINGDOM | United Kingdom Building Services [Member]
Segment Reporting Information [Line Items]
Revenues from unrelated entities	73,036	97,001	251,256	275,536
UNITED KINGDOM | Operating Segments [Member] | United Kingdom Building Services [Member]
Segment Reporting Information [Line Items]
Total revenues	73,036	97,001	251,256	275,536
Operating income (loss)	2,591	$ 3,358	9,160	$ 8,570
Total assets	$ 108,836		$ 108,836		$ 133,782