Comfort Systems USA (FIX) 10-Q30 Jul 142014 Q2 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
Document and Entity Information	Jun. 30, 2014	Jul. 22, 2014	Dec. 31, 2013
Document and Entity Information	'	'	'
Entity Registrant Name	'COMFORT SYSTEMS USA INC	'	'
Entity Central Index Key	'0001035983	'	'
Document Type	'10-Q	'	'
Document Period End Date	30-Jun-14	'	'
Amendment Flag	'false	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	37,748,396	'
Treasury Stock, Shares	3,374,969	3,374,969	3,488,438
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q2	'	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
CURRENT ASSETS:	'	'
Cash and cash equivalents	$49,759	$52,054
Accounts receivable, less allowance for doubtful accounts of $4,166 and $4,460, respectively	290,589	267,470
Other receivables	11,143	16,373
Inventories	9,084	8,430
Prepaid expenses and other	24,258	24,209
Costs and estimated earnings in excess of billings	38,352	28,122
Assets related to discontinued operations	311	339
Total current assets	423,496	396,997
PROPERTY AND EQUIPMENT, NET	52,086	46,861
GOODWILL	138,364	114,588
IDENTIFIABLE INTANGIBLE ASSETS, NET	48,319	37,383
OTHER NONCURRENT ASSETS	5,846	5,993
Total assets	668,111	601,822
CURRENT LIABILITIES:	'	'
Current maturities of notes to former owners	'	2,000
Current maturities of capital lease obligations	289	'
Accounts payable	108,359	100,825
Accrued compensation and benefits	41,993	44,093
Billings in excess of costs and estimated earnings	73,774	64,588
Accrued self-insurance expense	29,833	29,398
Other current liabilities	25,669	28,168
Liabilities related to discontinued operations	317	366
Total current liabilities	280,234	269,438
LONG-TERM DEBT	52,000	'
LONG-TERM CAPITAL LEASE OBLIGATIONS	614	'
DEFERRED INCOME TAX LIABILITIES	9,099	9,941
OTHER LONG-TERM LIABILITIES	9,395	8,421
Total liabilities	351,342	287,800
COMMITMENTS AND CONTINGENCIES	'	'
STOCKHOLDERS' EQUITY:	'	'
Preferred stock, $.01 par, 5,000,000 shares authorized, none issued and outstanding	'	'
Common stock, $.01 par, 102,969,912 shares authorized, 41,123,365 and 41,123,365 shares issued, respectively	411	411
Treasury stock, at cost, 3,374,969 and 3,488,438 shares, respectively	-36,569	-37,468
Additional paid-in capital	319,213	318,123
Retained earnings	15,402	14,768
Comfort Systems USA, Inc. stockholders' equity	298,457	295,834
Noncontrolling interests	18,312	18,188
Total stockholders' equity	316,769	314,022
Total liabilities and stockholders' equity	$668,111	$601,822

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS	'	'
Accounts receivable, allowance for doubtful accounts (in dollars)	$4,166	$4,460
Preferred stock, par value (in dollars per share)	$0.01	$0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	102,969,912	102,969,912
Common stock, shares issued	41,123,365	41,123,365
Treasury stock, shares	3,374,969	3,488,438

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS	'	'	'	'
REVENUE	$362,801	$351,053	$684,182	$676,943
COST OF SERVICES	300,942	291,086	570,174	565,509
Gross profit	61,859	59,967	114,008	111,434
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	50,573	45,699	100,958	92,219
GOODWILL IMPAIRMENT	727	'	727	'
GAIN ON SALE OF ASSETS	-89	-111	-222	-250
Operating income	10,648	14,379	12,545	19,465
OTHER INCOME (EXPENSE):	'	'	'	'
Interest income	2	7	13	14
Interest expense	-462	-347	-798	-685
Changes in the fair value of contingent earn-out obligations	-130	-27	'	-54
Other	24	37	92	101
Other income (expense)	-566	-330	-693	-624
INCOME BEFORE INCOME TAXES	10,082	14,049	11,852	18,841
INCOME TAX EXPENSE	3,746	5,735	4,438	7,778
INCOME FROM CONTINUING OPERATIONS	6,336	8,314	7,414	11,063
Loss from discontinued operations, net of income tax benefit of $- , $- , $(10) and $(39)	'	'	-15	-54
NET INCOME INCLUDING NONCONTROLLING INTERESTS	6,336	8,314	7,399	11,009
Less: Net income attributable to noncontrolling interests	1,935	552	2,623	715
NET INCOME ATTRIBUTABLE TO COMFORT SYSTEMS USA, INC.	$4,401	$7,762	$4,776	$10,294
Basic-	'	'	'	'
Income from continuing operations (in dollars per share)	$0.12	$0.21	$0.13	$0.28
Net income (in dollars per share)	$0.12	$0.21	$0.13	$0.28
Diluted-	'	'	'	'
Income from continuing operations (in dollars per share)	$0.12	$0.21	$0.13	$0.28
Net income (in dollars per share)	$0.12	$0.21	$0.13	$0.28
SHARES USED IN COMPUTING INCOME PER SHARE:	'	'	'	'
Basic (in shares)	37,706	37,190	37,644	37,128
Diluted (in shares)	37,880	37,365	37,914	37,349
DIVIDENDS PER SHARE (in dollars per share)	$0.06	$0.05	$0.11	$0.10

CONSOLIDATED_STATEMENTS_OF_OPE1

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS	'	'
Operating loss, income tax expense (benefit)	($10)	($39)

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings (Deficit)	Non-Controlling Interests
In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings (Deficit)	Non-Controlling Interests
BALANCE at Dec. 31, 2012	$287,306	$411	($41,012)	$317,534	($6,528)	$16,901
BALANCE (in shares) at Dec. 31, 2012	'	41,123,365	-3,879,299	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'
Net income	28,556	'	'	'	27,269	1,287
Issuance of Stock:	'	'	'	'	'	'
Issuance of shares for options exercised including tax benefit	5,233	'	4,711	522	'	'
Issuance of shares for options exercised including tax benefit (in shares)	'	'	439,762	'	'	'
Issuance of restricted stock	'	'	1,301	-1,301	'	'
Issuance of restricted stock (in shares)	'	'	122,375	'	'	'
Shares received in lieu of tax withholding payment on vested restricted stock	-631	'	-631	'	'	'
Shares received in lieu of tax withholding payment on vested restricted stock (in shares)	'	'	-45,266	'	'	'
Tax benefit from vesting of restricted stock	184	'	'	184	'	'
Forfeiture of unvested restricted stock	'	'	-5	5	'	'
Forfeiture of unvested restricted stock (in shares)	'	'	-469	'	'	'
Stock-based compensation	3,041	'	'	3,041	'	'
Dividends	-7,835	'	'	-1,862	-5,973	'
Share repurchase	-1,832	'	-1,832	'	'	'
Share repurchase (in shares)	'	'	-125,541	'	'	'
BALANCE at Dec. 31, 2013	314,022	411	-37,468	318,123	14,768	18,188
BALANCE (in shares) at Dec. 31, 2013	'	41,123,365	-3,488,438	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'
Net income	7,399	'	'	'	4,776	2,623
Issuance of Stock:	'	'	'	'	'	'
Issuance of shares for options exercised including tax benefit	800	'	692	108	'	'
Issuance of shares for options exercised including tax benefit (in shares)	'	'	64,119	'	'	'
Issuance of restricted stock	'	'	1,243	-1,243	'	'
Issuance of restricted stock (in shares)	'	'	115,044	'	'	'
Shares received in lieu of tax withholding payment on vested restricted stock	-531	'	-531	'	'	'
Shares received in lieu of tax withholding payment on vested restricted stock (in shares)	'	'	-34,657	'	'	'
Tax benefit from vesting of restricted stock	131	'	'	131	'	'
Stock-based compensation	2,094	'	'	2,094	'	'
Dividends	-4,142	'	'	'	-4,142	'
Distribution to noncontrolling interest	2,499	'	'	'	'	-2,499
Share repurchase	-505	'	-505	'	'	'
Share repurchase (in shares)	-100,000	'	-31,037	'	'	'
BALANCE at Jun. 30, 2014	$316,769	$411	($36,569)	$319,213	$15,402	$18,312
BALANCE (in shares) at Jun. 30, 2014	'	41,123,365	-3,374,969	'	'	'

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'	'
Net income including noncontrolling interests	$6,336	$8,314	$7,399	$11,009
Adjustments to reconcile net income to net cash provided by (used in) operating activities-	'	'	'	'
Amortization of identifiable intangible assets	1,781	1,740	3,385	3,669
Depreciation expense	3,219	2,799	6,269	5,645
Goodwill impairment	727	'	727	'
Bad debt expense	202	-471	235	-318
Deferred tax expense (benefit)	-1	1,598	-1,623	476
Amortization of debt financing costs	65	58	130	115
Gain on sale of assets	-89	-111	-222	-250
Changes in the fair value of contingent earn-out obligations	130	27	'	54
Stock-based compensation expense	1,439	1,793	2,870	2,720
(Increase) decrease in-	'	'	'	'
Receivables, net	-7,805	-18,928	-475	-30,920
Inventories	135	-50	-258	-13
Prepaid expenses and other current assets	827	-83	1,651	111
Costs and estimated earnings in excess of billings	-3,816	4,528	-8,259	-3,110
Other noncurrent assets	-84	127	98	249
Increase (decrease) in-	'	'	'	'
Accounts payable and accrued liabilities	9,167	4,595	-2,002	4,742
Billings in excess of costs and estimated earnings	10,054	799	3,873	2,269
Other long-term liabilities	98	-35	-197	-99
Net cash provided by (used in) operating activities	22,385	6,700	13,601	-3,651
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'	'
Purchases of property and equipment	-4,452	-4,029	-8,334	-7,237
Proceeds from sales of property and equipment	323	325	540	502
Proceeds from businesses sold	'	'	'	43
Cash paid for acquisitions, earn-outs and intangible assets, net of cash acquired	-47,359	'	-51,359	'
Net cash used in investing activities	-51,488	-3,704	-59,153	-6,692
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'
Net borrowings (payments) on revolving line of credit	45,000	'	52,000	'
Payments on other long-term debt	-2,000	-2,000	-2,000	-2,000
Debt financing costs	'	-552	'	-552
Payments of dividends to shareholders	-2,072	-1,913	-4,139	-3,766
Share repurchase program	-89	-510	-505	-655
Shares received in lieu of tax withholding	-531	-622	-531	-622
Excess tax benefit of stock-based compensation	119	243	105	243
Proceeds from exercise of options	284	269	826	284
Distributions to noncontrolling interests	-2,499	'	-2,499	'
Net cash provided by (used in) financing activities	38,212	-5,085	43,257	-7,068
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	9,109	-2,089	-2,295	-17,411
CASH AND CASH EQUIVALENTS, beginning of period	40,650	25,435	52,054	40,757
CASH AND CASH EQUIVALENTS, end of period	$49,759	$23,346	$49,759	$23,346

Business_and_Organization

Business and Organization	6 Months Ended
Business and Organization	Jun. 30, 2014
Business and Organization	'
Business and Organization	'

	1. Business and Organization

	Comfort Systems USA, Inc., a Delaware corporation, provides comprehensive heating, ventilation and air conditioning ("HVAC") installation, maintenance, repair and replacement services within the mechanical services industry. We operate primarily in the commercial, industrial and institutional HVAC markets and perform most of our services within office buildings, retail centers, apartment complexes, manufacturing plants and healthcare, education and government facilities. In addition to standard HVAC services, we provide specialized applications such as building automation control systems, fire protection, process cooling, electronic monitoring and process piping. Certain locations also perform related activities such as electrical service and plumbing. Approximately 45% of our consolidated 2014 revenue is attributable to installation of systems in newly constructed facilities, with the remaining 55% attributable to maintenance, repair and replacement services. The following service activities account for our consolidated 2014 revenue: HVAC 75%, plumbing 15%, building automation control systems 6% and other 4%. These service activities are within the mechanical services industry, which is the single industry segment we serve.

Summary_of_Significant_Account

Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2014

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation

These interim statements should be read in conjunction with the historical Consolidated Financial Statements and related notes of Comfort Systems included in the Annual Report on Form 10-K as filed with the Securities and Exchange Commission ("SEC") for the year ended December 31, 2013 (the "Form 10-K").

The accompanying unaudited consolidated financial statements were prepared using generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and applicable rules of Regulation S-X of the SEC. Accordingly, these financial statements do not include all the footnotes required by generally accepted accounting principles for complete financial statements and should be read in conjunction with the Form 10-K. We believe all adjustments necessary for a fair presentation of these interim statements have been included and are of a normal and recurring nature. The results of operations for interim periods are not necessarily indicative of the results for the full fiscal year.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities, revenue and expenses and disclosures regarding contingent assets and liabilities. Actual results could differ from those estimates. The most significant estimates used in our financial statements affect revenue and cost recognition for construction contracts, the allowance for doubtful accounts, self-insurance accruals, deferred tax assets, warranty accruals, fair value accounting for acquisitions and the quantification of fair value for reporting units in connection with our goodwill impairment testing.

Cash Flow Information

We consider all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Cash paid (in thousands) for:

Three Months Ended

Six Months Ended

June 30,

2014

2013

2014

2013

Interest

623

509

884

520

Income taxes

405

2,525

924

3,123

Total

1,028

3,034

1,808

3,643

Income Taxes

We are subject to income tax in the United States and Puerto Rico and we file a consolidated return for federal income tax purposes. Income taxes are provided for under the liability method, which takes into account differences between financial statement treatment and tax treatment of certain transactions.

Deferred income taxes are based on the difference between the financial reporting and tax basis of assets and liabilities. The deferred income tax provision represents the change during the reporting period in the deferred tax assets and deferred tax liabilities, net of the effect of acquisitions and dispositions. Deferred tax assets include tax loss and credit carry-forwards and are reduced by a valuation allowance if, based on available evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized.

We regularly evaluate valuation allowances established for deferred tax assets for which future realization is uncertain. We perform this evaluation quarterly. In assessing the realizability of deferred tax assets, we must consider whether it is more likely than not that some portion, or all, of the deferred tax assets will not be realized. We consider all available evidence, both positive and negative, in determining whether a valuation allowance is required. Such evidence includes the scheduled reversal of deferred tax liabilities, projected future taxable income, taxable income in prior carryback years and tax planning strategies in making this assessment, and judgment is required in considering the relative weight of negative and positive evidence.

Significant judgment is required in assessing the timing and amounts of deductible and taxable items. We establish reserves when, despite our belief that our tax return positions are fully supportable, we believe that certain positions may be challenged and potentially disallowed. When facts and circumstances change, we adjust these reserves through our provision for income taxes.

To the extent interest and penalties may be assessed by taxing authorities on any underpayment of income tax, such amounts have been accrued and are classified as a component of income tax expense in our consolidated statements of operations.

For the six months ended June 30, 2014 our tax expense is $4.4 million with an effective tax rate of 37.4% as compared to tax expense of $7.8 million with an effective tax rate of 41.3% for the six months ended June 30, 2013. The effective rate for 2014 is higher than the federal statutory rate of 35.0% primarily due to state income taxes (4.0%) which were partially offset by the impact of the noncontrolling interest of EAS which for tax purposes is treated as a partnership (2.4%). The effective rate for 2013 is higher than the federal statutory rate of 35.0% primarily due to state income taxes (4.0%) and losses in a foreign jurisdiction subject to a lower tax rate (2.9%). Tax reserves are analyzed and adjusted quarterly as events occur to warrant such changes. Adjustments to tax reserves are a component of the effective tax rate.

Financial Instruments

Our financial instruments consist of cash and cash equivalents, accounts receivable, other receivables, accounts payable, notes to former owners and a revolving credit facility. We believe that the carrying values of these instruments on the accompanying balance sheets approximate their fair values.

Segment Disclosure

Our activities are within the mechanical services industry, which is the single industry segment we serve. Each operating subsidiary represents an operating segment and these segments have been aggregated, as the operating units meet all of the aggregation criteria.

Reclassifications

Certain reclassifications have been made in prior period financial statements to conform to current period presentation. These reclassifications are of a normal and recurring nature and have not resulted in any changes to previously reported net income for any periods.

Recent Accounting Pronouncements

In April 2014, the FASB issued ASU No. 2014-08, "Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity." ASU 2014-08 raises the threshold for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other disposals that do not meet the definition of a discontinued operation. It is effective for annual periods beginning on or after December 15, 2014. Early adoption is permitted but only for disposals that have not been reported in financial statements previously issued. We do not believe this pronouncement will have a material impact on our consolidated financial statements.

In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers (Topic 606)." ASU 2014-09 provides a framework that replaces the existing revenue recognition guidance. It is effective for annual periods beginning after December 15, 2016, including interim periods within that reporting period. We are currently reviewing the effect of ASU No. 2014-09 on our revenue recognition.

Fair_Value_Measurements

Fair Value Measurements

6 Months Ended

Jun. 30, 2014

Fair Value Measurements

3. Fair Value Measurements

We classify and disclose assets and liabilities carried at fair value in one of the following three categories:

•

Level 1—quoted prices in active markets for identical assets and liabilities;

•

Level 2—observable market based inputs or unobservable inputs that are corroborated by market data; and

•

Level 3—significant unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall for assets and liabilities measured on a recurring basis as of June 30, 2014 (in thousands):

Fair Value Measurements at

Reporting Date Using

Total

Quoted Prices In

Significant

Active Markets

Other

Unobservable

for Identical

Observable

Inputs

Assets

Inputs

(Level 3)

(Level 1)

(Level 2)

Cash and cash equivalents

49,759

—

Life insurance—cash surrender value

2,972

—

2,972

—

Contingent earn-out obligations

520

—

520

Cash and cash equivalents consist primarily of highly rated money market funds at a variety of well-known institutions with original maturities of three months or less. The original cost of these assets approximates fair value due to their short term maturity.

One of our operations has life insurance policies covering 41 employees with a combined face value of $38.9 million. The policy is invested in mutual funds and the fair value measurement is determined using level 2 inputs within the fair value hierarchy and will vary with investment performance. The cash surrender value of these policies is $3.0 million as of June 30, 2014 and $2.9 million as of December 31, 2013. These assets are included in "Other Noncurrent Assets" in our consolidated balance sheets.

The valuation of our contingent earn-out obligations is determined using a probability weighted discounted cash flow method. This fair value measurement is based on significant unobservable inputs in the market and thus represents a Level 3 measurement within the fair value hierarchy. This analysis reflects the contractual terms of the purchase agreements (e.g., minimum and maximum payments, length of earn-out periods, manner of calculating any amounts due, etc.) and utilizes assumptions with regard to future cash flows, probabilities of achieving such future cash flows and a discount rate. The contingent earn-out obligations are measured at fair value each reporting period and changes in estimates of fair value are recognized in earnings.

The table below presents a reconciliation of the fair value of our contingent earn-out obligations that use significant unobservable inputs (Level 3) (in thousands).

Balance at beginning of year

320

Issuances

200

Settlements

—

Adjustments to fair value

—

Balance at end of period

520

We measure certain assets at fair value on a nonrecurring basis. These assets are recognized at fair value when they are deemed to be other-than-temporarily impaired. During the quarter ended June 30, 2014, we recorded a goodwill impairment charge of $0.7 million based on Level 3 measurements. See Note 6 "Goodwill and Identifiable Intangible Assets, Net" for further discussion. We did not recognize any other impairments, in the current quarter, on those assets required to be measured at fair value on a nonrecurring basis.

Acquisitions

Acquisitions	6 Months Ended
Acquisitions	Jun. 30, 2014
Acquisitions	'
Acquisitions	'

	4. Acquisitions

	We completed two acquisitions in the second quarter of 2014, one of which was "tucked-in" with existing operations and the second reports as a separate operating location in northern Texas. The acquisition date fair value of consideration transferred for the operation in northern Texas was $40.2 million, of which $30.4 million was allocated to goodwill and identifiable intangible assets. We completed one acquisition in the first quarter of 2014 which was "tucked-in" with existing operations. No acquisitions were completed in 2013. The completed acquisitions were not material, individually or in the aggregate. Our consolidated balance sheet includes preliminary allocations of the purchase price to the assets acquired and liabilities assumed based on estimates of fair value, pending completion of final valuation and purchase price adjustments. The results of operations of acquisitions are included in our consolidated financial statements from their respective acquisition dates. Additional contingent purchase price ("earn-out") has been or will be paid if certain acquisitions achieve predetermined profitability targets.

Discontinued_Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2014
Discontinued Operations	'
Discontinued Operations	'

	5. Discontinued Operations

	During the fourth quarter of 2012, we substantially completed the shutdown of our operation located in Delaware. Discontinued operations were breakeven for the three months ended June 30, 2014 and 2013, respectively. The after tax loss for the six months ended June 30, 2014 and 2013 was less than $0.1 million, respectively. These results have been recorded in discontinued operations under "Loss from discontinued operations, net of income tax benefit."

	Our consolidated statements of operations and the related earnings per share amounts have been restated to reflect the effects of the discontinued operations. No interest expense is allocated to discontinued operations.

	Revenue and pre-tax loss related to discontinued operations are as follows (in thousands):


		Three Months				Six Months
		Ended				Ended
		June 30,				June 30,
		2014		2013		2014			2013
	Revenue	$	12	$	49	$	12		$	22
	Pre-tax loss	$	—	$	—	$	(25	)	$	(93	)

Goodwill_and_Identifiable_Inta

Goodwill and Identifiable Intangible Assets, Net	6 Months Ended
Goodwill and Identifiable Intangible Assets, Net	Jun. 30, 2014
Goodwill and Identifiable Intangible Assets, Net	'
Goodwill and Identifiable Intangible Assets, Net	'

	6. Goodwill and Identifiable Intangible Assets, Net

	Goodwill

	The changes in the carrying amount of goodwill are as follows (in thousands):


		June 30,			December 31,
		2014			2013
	Balance at beginning of year	$	114,588		$	114,588
	Additions		24,503			—
	Impairment adjustment		(727	)		—


	Balance at end of period	$	138,364		$	114,588





	We recorded a goodwill impairment charge of $0.7 million during the second quarter of 2014. Based on market activity declines and write-downs incurred on several jobs, we determined that the operating environment, conditions and performance at our operating location based in California could no longer support the related goodwill balance. When the carrying value of a given reporting unit exceeds its fair value, an impairment loss is recorded to the extent that the implied fair value of the goodwill of the reporting unit is less than its carrying value. The fair value was estimated using a discounted cash flow model combined with market valuation approaches.

	Identifiable Intangible Assets, Net

	Identifiable intangible assets consist of the following (dollars in thousands):


				June 30, 2014						December 31, 2013
		Estimated		Gross			Accumulated			Gross		Accumulated
		Useful Lives		Book Value			Amortization			Book Value		Amortization
		in Years
	Customer relationships	1 - 15		$	48,725		$	(23,520	)	$	40,404	$	(20,978	)
	Backlog	1 - 2			1,600			(117	)		6,515		(6,515	)
	Noncompete agreements	2 - 7			2,890			(2,758	)		2,890		(2,649	)
	Tradenames	2 - 25			28,095			(6,596	)		23,695		(5,979	)


	Total			$	81,310		$	(32,991	)	$	73,504	$	(36,121	)

LongTerm_Debt_Obligations

Long-Term Debt Obligations	6 Months Ended
Long-Term Debt Obligations	Jun. 30, 2014
Long-Term Debt Obligations	'
Long-Term Debt Obligations	'

	7. Long-Term Debt Obligations

	Long-term debt obligations consist of the following (in thousands):


		June 30,			December 31,
		2014			2013
	Revolving credit facility	$	52,000		$	—
	Notes to former owners		—			2,000


	Total debt		52,000			2,000
	Less—current portion		—			(2,000	)


	Total long-term portion of debt	$	52,000		$	—





	Revolving Credit Facility

	On June 25, 2013, we amended our senior credit facility (the "Facility") provided by a syndicate of banks increasing our borrowing capacity from $125.0 million to $175.0 million. The Facility, which is available for borrowings and letters of credit, expires in July 2018 and is secured by a first lien on substantially all of our personal property except for assets related to projects subject to surety bonds and assets held by certain unrestricted subsidiaries and a second lien on our assets related to projects subject to surety bonds. As of June 30, 2014, we had $52.0 million of outstanding borrowings, $50.6 million in letters of credit outstanding and $72.4 million of credit available.

	There are two interest rate options for borrowings under the Facility, the Base Rate Loan Option and the Eurodollar Rate Loan Option. These rates are floating rates determined by the broad financial markets, meaning they can and do move up and down from time to time. Additional margins are then added to these two rates.

	The following is a summary of the additional margins:


		Consolidated Total Indebtedness to
		Credit Facility Adjusted EBITDA
		Less than			0.75 to			1.50 to			2.25 or
		0.75			1.5			2.25			greater
	Additional Per Annum Interest Margin Added Under:
	Base Rate Loan Option		0.25	%		0.5	%		0.75	%		1	%
	Eurodollar Rate Loan Option		1.25	%		1.5	%		1.75	%		2	%

	The weighted average interest rate applicable to the borrowings under the Facility was approximately 3.50% as of June 30, 2014.

	We have used letters of credit to guarantee performance under our contracts and to ensure payment to our subcontractors and vendors under those contracts. Our lenders issue such letters of credit through the Facility for a fee. We have never had a claim made against a letter of credit that resulted in payments by a lender or by us and believe such claims are unlikely in the foreseeable future. The letter of credit fees range from 1.25% to 2.00% per annum, based on the ratio of Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA, as defined in the credit agreement.

	Commitment fees are payable on the portion of the revolving loan capacity not in use for borrowings or letters of credit at any given time. These fees range from 0.20% to 0.35% per annum, based on the ratio of Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA, as defined in the credit agreement.

	The Facility contains financial covenants defining various financial measures and the levels of these measures with which we must comply. Covenant compliance is assessed as of each quarter end.

	The Facility's principal financial covenants include:

	Leverage Ratio—The Facility requires that the ratio of our Consolidated Total Indebtedness to our Credit Facility Adjusted EBITDA not exceed 3.00 through December 31, 2014, 2.75 through December 31, 2015 and 2.50 through maturity. The leverage ratio as of June 30, 2014 was 0.77.

	Fixed Charge Coverage Ratio—The Facility requires that the ratio of Credit Facility Adjusted EBITDA, less non-financed capital expenditures, tax provision, dividends and amounts used to repurchase stock to the sum of interest expense and scheduled principal payments of indebtedness be at least 2.00; provided that the calculation of the fixed charge coverage ratio excludes stock repurchases and the payment of dividends at any time that the Company's Net Leverage Ratio does not exceed 1.50. The Facility also allows the fixed charge coverage ratio not to be reduced for stock repurchases through June 30, 2015 in an aggregate amount not to exceed $25 million if at the time of and after giving effect to such repurchase the Company's Net Leverage Ratio was less than or equal to 1.50. Capital expenditures, tax provision, dividends and stock repurchase payments are defined under the Facility for purposes of this covenant to be amounts for the four quarters ending as of any given quarterly covenant compliance measurement date. The fixed charge coverage ratio as of June 30, 2014 was 24.84.

	Other Restrictions—The Facility permits acquisitions of up to $20.0 million per transaction, provided that the aggregate purchase price of such an acquisition and of acquisitions in the same fiscal year does not exceed $50.0 million. However, these limitations only apply when the Company's Net Leverage Ratio is equal to or greater than 2.00.

	While the Facility's financial covenants do not specifically govern capacity under the Facility, if our debt level under the Facility at a quarter-end covenant compliance measurement date were to cause us to violate the Facility's leverage ratio covenant, our borrowing capacity under the Facility and the favorable terms that we currently have could be negatively impacted by the lenders.

	We are in compliance with all of our financial covenants as of June 30, 2014.

	Notes to Former Owners

	We issued subordinated notes to the former owners of acquired companies as part of the consideration used to acquire these companies. These notes bear interest, payable annually, at a weighted average interest rate of 3.3%. In June 2014, we paid the outstanding balance of $2.0 million.

Other Debt

Our majority owned subsidiary, EAS, had a revolving $2.5 million credit line that was available for temporary working capital needs and expired June 30, 2014. This line of credit was not renewed until July 29, 2014 and expires July 31, 2015. The terms and conditions under the renewed agreement are substantially consistent with the previously existing agreement.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2014
Commitments and Contingencies	'
Commitments and Contingencies	'

	8. Commitments and Contingencies

	Claims and Lawsuits

	We are subject to certain legal and regulatory claims, including lawsuits arising in the normal course of business. We maintain various insurance coverages to minimize financial risk associated with these claims. We have estimated and provided accruals for probable losses and related legal fees associated with certain litigation in the accompanying consolidated financial statements. While we cannot predict the outcome of these proceedings, in management's opinion and based on reports of counsel, any liability arising from these matters individually and in the aggregate will not have a material effect on our operating results, cash flows or financial condition, after giving effect to provisions already recorded.

	Surety

	Many customers, particularly in connection with new construction, require us to post performance and payment bonds issued by a financial institution known as a surety. If we fail to perform under the terms of a contract or to pay subcontractors and vendors who provided goods or services under a contract, the customer may demand that the surety make payments or provide services under the bond. We must reimburse the surety for any expenses or outlays it incurs. To date, we are not aware of any losses to our sureties in connection with bonds the sureties have posted on our behalf, and do not expect such losses to be incurred in the foreseeable future.

	Surety market conditions remain challenging as a result of significant losses incurred by many sureties in recent periods, both in the construction industry as well as in certain larger corporate bankruptcies. As a result, less bonding capacity is available in the market and terms have become more restrictive. Further, under standard terms in the surety market, sureties issue bonds on a project-by-project basis, and can decline to issue bonds at any time. Historically, approximately 25% to 35% of our business has required bonds. While we have strong surety relationships to support our bonding needs, current market conditions as well as changes in the sureties' assessment of our operating and financial risk could cause the sureties to decline to issue bonds for our work. If that were to occur, the alternatives include doing more business that does not require bonds, posting other forms of collateral for project performance such as letters of credit or cash, and seeking bonding capacity from other sureties. We would likely also encounter concerns from customers, suppliers and other market participants as to our creditworthiness. While we believe our general operating and financial characteristics, including a significant amount of cash on our balance sheet, would enable us to ultimately respond effectively to an interruption in the availability of bonding capacity, such an interruption would likely cause our revenue and profits to decline in the near term.

	Self-Insurance

	We are substantially self-insured for workers' compensation, employer's liability, auto liability, general liability and employee group health claims, in view of the relatively high per-incident deductibles we absorb under our insurance arrangements for these risks. Losses up to deductible amounts are estimated and accrued based upon known facts, historical trends and industry averages. Loss estimates associated with the larger and longer-developing risks, such as workers' compensation, auto liability and general liability, are reviewed by a third-party actuary quarterly.

Stockholders_Equity

Stockholders' Equity	6 Months Ended
Stockholders' Equity	Jun. 30, 2014
Stockholders' Equity	'
Stockholders' Equity	'

	9. Stockholders' Equity

	Earnings Per Share

	Basic earnings per share ("EPS") is computed by dividing net income by the weighted average number of shares of common stock outstanding during the period. Diluted EPS is computed considering the dilutive effect of stock options, contingently issuable restricted stock and restricted stock units.

	There were no anti-dilutive stock options for the six months ended June 30, 2014. There were approximately 0.2 million anti-dilutive stock options excluded from the calculation of diluted EPS for the three months ended June 30, 2014. There were approximately 0.3 million and 0.4 million of anti-dilutive stock options excluded from the calculation of diluted EPS for the three and six months ended June 30, 2013, respectively.

	The following table reconciles the number of shares outstanding with the number of shares used in computing basic and diluted earnings per share for each of the periods presented (in thousands):


		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
	Common shares outstanding, end of period(a)		37,748			37,257			37,748			37,257
	Effect of using weighted average common shares outstanding		(42	)		(67	)		(104	)		(129	)


	Shares used in computing earnings per share—basic		37,706			37,190			37,644			37,128
	Effect of shares issuable under stock option plans based on the treasury stock method		144			121			165			107
	Effect of contingently issuable restricted shares		30			54			105			114


	Shares used in computing earnings per share—diluted		37,880			37,365			37,914			37,349






	(a)
	Excludes 0.1 million shares of unvested contingently issuable restricted stock outstanding as of June 30, 2013.

	Share Repurchase Program

	On March 29, 2007, our Board of Directors (the "Board") approved a stock repurchase program to acquire up to 1.0 million shares of our outstanding common stock. Subsequently, the Board has from time to time approved extensions of the program to acquire additional shares. Since the inception of the repurchase program, the Board has approved 6.6 million shares to be repurchased.

	The share repurchases will be made from time to time at our discretion in the open market or privately negotiated transactions as permitted by securities laws and other legal requirements, and subject to market conditions and other factors. The Board may modify, suspend, extend or terminate the program at any time. During the six months ended June 30, 2014, we repurchased less than 0.1 million shares for approximately $0.5 million at an average price of $16.29 per share. Since the inception of the program in 2007 and as of June 30, 2014, we have repurchased a cumulative total of 6.0 million shares at an average price of $11.03 per share.

Subsequent_Event

Subsequent Event	6 Months Ended
Subsequent Event	Jun. 30, 2014
Subsequent Event	'
Subsequent Event	'

	10. Subsequent Event

	On July 22, 2014, we amended our senior credit facility (the "Facility") provided by a syndicate of banks increasing our borrowing capacity from $175.0 million to $250.0 million. The Facility, which is available for borrowings and letters of credit, expires in October 2019. The terms, covenants and conditions of the amended agreement are substantially consistent with the previously existing agreement.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2014

Summary of Significant Accounting Policies

Basis of Presentation

Use of Estimates

Cash Flow Information

We consider all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Cash paid (in thousands) for:

Three Months Ended

Six Months Ended

June 30,

2014

2013

2014

2013

Interest

623

509

884

520

Income taxes

405

2,525

924

3,123

Total

1,028

3,034

1,808

3,643

Income Taxes

Financial Instruments

Segment Disclosure

Reclassifications

Recent Accounting Pronouncements

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	6 Months Ended
Summary of Significant Accounting Policies (Tables)	Jun. 30, 2014
Summary of Significant Accounting Policies	'
Schedule of cash paid	'

	Cash paid (in thousands) for:


		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
	Interest	$	623	$	509	$	884	$	520
	Income taxes		405		2,525		924		3,123


	Total	$	1,028	$	3,034	$	1,808	$	3,643

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
Fair Value Measurements (Tables)	Jun. 30, 2014
Fair Value Measurements	'
Summary of fair values and levels within the fair value hierarchy in which the fair value measurements fall for assets and liabilities measured on a recurring basis	'

	The following table summarizes the fair values and levels within the fair value hierarchy in which the fair value measurements fall for assets and liabilities measured on a recurring basis as of June 30, 2014 (in thousands):


				Fair Value Measurements at
				Reporting Date Using
		Total		Quoted Prices In		Significant		Significant
				Active Markets		Other		Unobservable
				for Identical		Observable		Inputs
				Assets		Inputs		(Level 3)
				(Level 1)		(Level 2)
	Cash and cash equivalents	$	49,759	$	49,759	$	—	$	—
	Life insurance—cash surrender value	$	2,972	$	—	$	2,972	$	—
	Contingent earn-out obligations	$	520	$	—	$	—	$	520
Schedule of reconciliation of the fair value of contingent earn-out obligations that use significant unobservable inputs (Level 3)	'

	The table below presents a reconciliation of the fair value of our contingent earn-out obligations that use significant unobservable inputs (Level 3) (in thousands).


	Balance at beginning of year	$	320
	Issuances		200
	Settlements		—
	Adjustments to fair value		—


	Balance at end of period	$	520

Discontinued_Operations_Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2014
Discontinued Operations	'
Schedule of revenue and pre-tax loss related to discontinued operations	'

	Revenue and pre-tax loss related to discontinued operations are as follows (in thousands):


		Three Months				Six Months
		Ended				Ended
		June 30,				June 30,
		2014		2013		2014			2013
	Revenue	$	12	$	49	$	12		$	22
	Pre-tax loss	$	—	$	—	$	(25	)	$	(93	)

Goodwill_and_Identifiable_Inta1

Goodwill and Identifiable Intangible Assets, Net (Tables)	6 Months Ended
Goodwill and Identifiable Intangible Assets, Net (Tables)	Jun. 30, 2014
Goodwill and Identifiable Intangible Assets, Net	'
Schedule of changes in the carrying amount of goodwill	'

	The changes in the carrying amount of goodwill are as follows (in thousands):


		June 30,			December 31,
		2014			2013
	Balance at beginning of year	$	114,588		$	114,588
	Additions		24,503			—
	Impairment adjustment		(727	)		—


	Balance at end of period	$	138,364		$	114,588




Schedule of components of identifiable intangible assets	'

	Identifiable intangible assets consist of the following (dollars in thousands):


				June 30, 2014						December 31, 2013
		Estimated		Gross			Accumulated			Gross		Accumulated
		Useful Lives		Book Value			Amortization			Book Value		Amortization
		in Years
	Customer relationships	1 - 15		$	48,725		$	(23,520	)	$	40,404	$	(20,978	)
	Backlog	1 - 2			1,600			(117	)		6,515		(6,515	)
	Noncompete agreements	2 - 7			2,890			(2,758	)		2,890		(2,649	)
	Tradenames	2 - 25			28,095			(6,596	)		23,695		(5,979	)


	Total			$	81,310		$	(32,991	)	$	73,504	$	(36,121	)

LongTerm_Debt_Obligations_Tabl

Long-Term Debt Obligations (Tables)	6 Months Ended
Long-Term Debt Obligations (Tables)	Jun. 30, 2014
Long-Term Debt Obligations	'
Schedule of components of long-term debt obligations	'

	Long-term debt obligations consist of the following (in thousands):


		June 30,			December 31,
		2014			2013
	Revolving credit facility	$	52,000		$	—
	Notes to former owners		—			2,000


	Total debt		52,000			2,000
	Less—current portion		—			(2,000	)


	Total long-term portion of debt	$	52,000		$	—




Summary of additional margins	'






		Consolidated Total Indebtedness to
		Credit Facility Adjusted EBITDA
		Less than			0.75 to			1.50 to			2.25 or
		0.75			1.5			2.25			greater
	Additional Per Annum Interest Margin Added Under:
	Base Rate Loan Option		0.25	%		0.5	%		0.75	%		1	%
	Eurodollar Rate Loan Option		1.25	%		1.5	%		1.75	%		2	%

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	6 Months Ended
Stockholders' Equity (Tables)	Jun. 30, 2014
Stockholders' Equity	'
Reconciliation of number of shares outstanding with the number of shares used in computing basic and diluted earnings per share	'

	The following table reconciles the number of shares outstanding with the number of shares used in computing basic and diluted earnings per share for each of the periods presented (in thousands):


		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
	Common shares outstanding, end of period(a)		37,748			37,257			37,748			37,257
	Effect of using weighted average common shares outstanding		(42	)		(67	)		(104	)		(129	)


	Shares used in computing earnings per share—basic		37,706			37,190			37,644			37,128
	Effect of shares issuable under stock option plans based on the treasury stock method		144			121			165			107
	Effect of contingently issuable restricted shares		30			54			105			114


	Shares used in computing earnings per share—diluted		37,880			37,365			37,914			37,349






	(a)
	Excludes 0.1 million shares of unvested contingently issuable restricted stock outstanding as of June 30, 2013.

Business_and_Organization_Deta

Business and Organization (Details)	6 Months Ended
Business and Organization (Details)	Jun. 30, 2014
Installation of systems in newly constructed facilities	'
Business and Organization	'
Percentage of revenue attributable to services	45.00%
Maintenance, repair and replacement services	'
Business and Organization	'
Percentage of revenue attributable to services	55.00%
HVAC	'
Business and Organization	'
Percentage of revenue attributable to services	75.00%
Plumbing	'
Business and Organization	'
Percentage of revenue attributable to services	15.00%
Building automation control systems	'
Business and Organization	'
Percentage of revenue attributable to services	6.00%
Other	'
Business and Organization	'
Percentage of revenue attributable to services	4.00%

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Cash paid for:	'	'	'	'
Interest	$623	$509	$884	$520
Income taxes	405	2,525	924	3,123
Total	1,028	3,034	1,808	3,643
Income Taxes	'	'	'	'
Tax expense	$3,746	$5,735	$4,438	$7,778
Effective tax rate (as a percent)	'	'	37.40%	41.30%
Federal statutory income taxes rate (as a percent)	'	'	35.00%	35.00%
State income taxes rate (as a percent)	'	'	4.00%	4.00%
Foreign income taxes rate (as a percent)	'	'	'	2.90%
Noncontrolling interest (as a percent)	'	'	2.40%	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
	item	item	Dec. 31, 2013
Fair Value Measurements	'	'	'
Number of employees covered under life insurance policies	41	41	'
Combined face value of life insurance policies	$38,900,000	$38,900,000	'
Cash surrender value	3,000,000	3,000,000	2,900,000
Reconciliation of the fair value of contingent earn-out obligations that use significant unobservable inputs (Level 3)	'	'	'
Goodwill impairment	727,000	727,000	'
Contingent earn-out obligations	'	'	'
Reconciliation of the fair value of contingent earn-out obligations that use significant unobservable inputs (Level 3)	'	'	'
Balance at beginning of year	'	320,000	'
Issuances	'	200,000	'
Balance at end of period	520,000	520,000	'
Recurring basis \| Total	'	'	'
Fair Value Measurements	'	'	'
Cash and cash equivalents	49,759,000	49,759,000	'
Life insurance - cash surrender value	2,972,000	2,972,000	'
Contingent earn-out obligations	520,000	520,000	'
Recurring basis \| Quoted Market Prices In Active Markets for Identical Assets (Level 1)	'	'	'
Fair Value Measurements	'	'	'
Cash and cash equivalents	49,759,000	49,759,000	'
Recurring basis \| Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value Measurements	'	'	'
Life insurance - cash surrender value	2,972,000	2,972,000	'
Recurring basis \| Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value Measurements	'	'	'
Contingent earn-out obligations	$520,000	$520,000	'

Acquisitions_Details

Acquisitions (Details) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
	item	item	item
Acquisitions	'	'	'
Number of acquisitions	2	1	0
Fair value of consideration transferred	$40.20	'	'
Amount allocated to goodwill and identifiable intangible assets for acquisitions in northern Texas	$30.40	'	'

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Discontinued Operations	'	'	'	'
After-tax loss from discontinued operations	'	'	$15	$54
Interest expense allocated to discontinued operations	'	'	0	'
Revenue and pre-tax income (loss) related to discontinued operations	'	'	'	'
Revenue	12	49	12	22
Pre-tax loss	'	'	-25	-93
Operation located in Delaware \| Maximum	'	'	'	'
Discontinued Operations	'	'	'	'
After-tax loss from discontinued operations	'	'	$100	$100

Goodwill_and_Identifiable_Inta2

Goodwill and Identifiable Intangible Assets, Net (Details) (USD $)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2012
Changes in the carrying amount of goodwill	'	'	'
Balance at the beginning of year	'	$114,588	$114,588
Additions	'	24,503	'
Impairment adjustment	727	727	'
Balance at the end of period	$138,364	$138,364	$114,588

Goodwill_and_Identifiable_Inta3

Goodwill and Identifiable Intangible Assets, Net (Details 2) (USD $)

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

In Thousands, unless otherwise specified

Customer relationships

Backlog

Noncompete agreements

Tradenames

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Identifiable Intangible Assets, Net

Estimated Useful Lives in Years

'1 year

'15 years

'1 year

'2 years

'7 years

'2 years

'25 years

Gross Book Value

$81,310

$73,504

$48,725

$40,404

$1,600

$6,515

$2,890

$28,095

$23,695

Accumulated Amortization

($32,991)

($36,121)

($23,520)

($20,978)

($117)

($6,515)

($2,758)

($2,649)

($6,596)

($5,979)

LongTerm_Debt_Obligations_Deta

Long-Term Debt Obligations (Details) (USD $)

3 Months Ended

6 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 25, 2013

Jun. 24, 2013

Jul. 22, 2014

Jun. 30, 2014

Dec. 31, 2013

Revolving credit facility

Notes to former owners

item

Subsequent events

EAS

Actual

Minimum

Maximum

Base rate

Eurodollar rate

Covenant Requirement

Actual

Through December 31, 2014

Through December 31, 2015

Through maturity

Covenant Requirement

Actual

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: Less than 0.75

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 0.75 to 1.50

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.50 to 2.25

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 2.25 or greater

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: Less than 0.75

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 0.75 to 1.50

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 1.50 to 2.25

Consolidated Total Indebtedness to Credit Facility Adjusted EBITDA: 2.25 or greater

Long-Term Debt Obligations

Total debt

$52,000,000

$2,000,000

$52,000,000

$2,000,000

Less - current portion

-2,000,000

Total long-term portion of debt

52,000,000

Borrowing capacity

175,000,000

125,000,000

250,000,000

2,500,000

Outstanding borrowings

52,000,000

Letters of credit amount outstanding

50,600,000

Credit available

72,400,000

Number of interest rate options

Additional per annum interest margin added under:

Variable rate basis

'Base rate

'Eurodollar rate

Additional per annum interest margin (as a percent)

0.25%

0.50%

0.75%

1.00%

1.25%

1.50%

1.75%

2.00%

Weighted average interest rate (as a percent)

3.50%

3.30%

Payments of debt

2,000,000

Letter of credit fees (as a percent)

1.25%

2.00%

Commitment fees payable on unused portion of the facility (as a percent)

0.20%

0.35%

Principal financial covenants

Leverage ratio

0.77

2.75

2.5

Net leverage ratio used to determine exclusion of stock repurchases and the payment of dividends for calculation of the fixed charge coverage ratio

1.5

Amount of stock repurchases to maintain maximum net leverage ratio

25,000,000

Net leverage ratio after giving effect to stock repurchases for calculation of the fixed charge coverage ratio

1.5

Number of quarters of capital expenditures, tax provision, dividends and stock repurchase payments used for calculation of fixed charge coverage ratio

Fixed charge coverage ratio

24.84

Permitted amount of acquisitions per transaction

20,000,000

Aggregate purchase price of current acquisition and acquisitions in the preceding 12 month period for determining permitted amount of acquisition per transaction

$50,000,000

Net leverage ratio used as basis for other restrictions

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (Surety)	6 Months Ended
Commitments and Contingencies (Details) (Surety)	Jun. 30, 2014
Minimum	'
Surety	'
Percentage of business which has required bonds	25.00%
Maximum	'
Surety	'
Percentage of business which has required bonds	35.00%

Stockholders_Equity_Details

Stockholders' Equity (Details) (Stock Options)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stock Options	'	'	'	'
Earnings Per Share	'	'	'	'
Anti-dilutive securities excluded from computation of earnings per share amount (in shares)	0.2	0.3	0	0.4

Stockholders_Equity_Details_2

Stockholders' Equity (Details 2) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended	88 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014	Mar. 29, 2007
Reconciliation of the number of shares outstanding with the number of shares used in computing basic and diluted earnings per share	'	'	'	'	'	'	'
Common shares outstanding, end of period	37,748,000	37,257,000	37,748,000	37,257,000	'	'	'
Effect of using weighted average common shares outstanding	-42,000	-67,000	-104,000	-129,000	'	'	'
Shares used in computing earnings per share - basic	37,706,000	37,190,000	37,644,000	37,128,000	'	'	'
Effect of shares issuable under stock option plans based on the treasury stock method	144,000	121,000	165,000	107,000	'	'	'
Effect of contingently issuable restricted shares	30,000	54,000	105,000	114,000	'	'	'
Shares used in computing earnings per share - diluted	37,880,000	37,365,000	37,914,000	37,349,000	'	'	'
Number of shares of unvested contingently issuable restricted stock outstanding	'	100,000	'	100,000	'	'	'
Share Repurchase Program	'	'	'	'	'	'	'
Number of shares of outstanding common stock authorized to be acquired under a stock repurchase program	6,600,000	'	6,600,000	'	'	6,600,000	1,000,000
Minimum number of shares of common stock repurchased	'	'	100,000	'	'	6,000,000	'
Share repurchased	'	'	$505	'	$1,832	'	'
Average price (in dollars per share)	'	'	$16.29	'	'	$11.03	'

Subsequent_Event_Details

Subsequent Event (Details) (Facility, USD $)	Jun. 30, 2014	Jun. 25, 2013	Jun. 24, 2013	Jul. 22, 2014
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 25, 2013	Jun. 24, 2013	Subsequent events
Subsequent Events	'	'	'	'
Borrowing capacity	$175	$175	$125	$250