Aegion 10-Q 4 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 27, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	Aegion Corp
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		35,107,707
Amendment Flag	false
Entity Central Index Key	353,020
Entity Filer Category	Large Accelerated Filer
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Revenues	$ 293,908	$ 309,166
Cost of revenues	239,494	249,976
Gross profit	54,414	59,190
Operating expenses	50,725	49,084
Acquisition-related expenses	1,031	323
Restructuring charges	6,797	658
Operating income (loss)	(4,139)	9,125
Other income (expense):
Interest expense	(3,615)	(3,232)
Interest income	32	126
Other	(973)	(2,779)
Total other expense	(4,556)	(5,885)
Income (loss) before taxes on income	(8,695)	3,240
Taxes (benefit) on income (loss)	(4,746)	1,868
Net income (loss)	(3,949)	1,372
Non-controlling interests	157	(13)
Net income (loss) attributable to Aegion Corporation	$ (3,792)	$ 1,359
Earnings (loss) per share attributable to Aegion Corporation:
Net income per share, basic (in dollars per share)	$ (0.11)	$ 0.04
Net income per share, diluted (in dollars per share)	$ (0.11)	$ 0.04

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ (3,949)	$ 1,372
Other comprehensive income (loss):
Currency translation adjustments		(557)	(16,096)
Pension activity, net of tax	[1]	(122)	21
Deferred gain (loss) on hedging activity, net of tax	[2]	(3,573)	409
Total comprehensive loss		(8,201)	(14,294)
Comprehensive (income) loss attributable to non-controlling interests		(85)	994
Comprehensive loss attributable to Aegion Corporation		$ (8,286)	$ (13,300)
[1]	Amounts presented net of tax of $(30) and $5 for the quarters ended March 31, 2016 and 2015, respectively.
[2]	Amounts presented net of tax of $(2,392) and $271 for the quarters ended March 31, 2016 and 2015, respectively.

Consolidated Statements of Com4

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Pension activity, tax (benefit) expense	$ (30)	$ 5
Deferred gain on hedging activity, tax	$ (2,392)	$ 271

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 127,859	$ 209,253
Restricted cash	6,615	5,796
Receivables, net of allowances of $7,544 and $14,524, respectively	171,747	200,883
Retainage	36,708	37,285
Costs and estimated earnings in excess of billings	99,911	89,141
Inventories	63,432	47,779
Prepaid expenses and other current assets	62,811	66,999
Assets held for sale	0	21,060
Total current assets	569,083	678,196
Property, plant & equipment, less accumulated depreciation	151,086	144,833
Other assets
Goodwill	294,479	249,120
Identified intangible assets, less accumulated amortization	205,498	174,118
Deferred income tax assets	3,116	2,130
Other assets	5,120	5,616
Total other assets	508,213	430,984
Total Assets	1,228,382	1,254,013
Current liabilities
Accounts payable	66,655	72,732
Accrued expenses	99,619	112,951
Billings in excess of costs and estimated earnings	86,962	87,475
Current maturities of long-term debt and line of credit	17,649	17,648
Liabilities held for sale	0	6,961
Total current liabilities	270,885	297,767
Long-term debt, less current maturities	363,381	333,480
Deferred income tax liabilities	17,872	19,386
Other non-current liabilities	11,091	8,824
Total liabilities	$ 663,229	$ 659,457
Commitments and contingencies
Equity
Preferred stock, undesignated, $.10 par – shares authorized 2,000,000; none outstanding	$ 0	$ 0
Common stock, $.01 par – shares authorized 125,000,000; shares issued and outstanding 35,156,241 and 36,053,499, respectively	352	361
Additional paid-in capital	186,036	199,951
Retained earnings	421,782	425,574
Accumulated other comprehensive loss	(52,355)	(47,861)
Total stockholders’ equity	555,815	578,025
Non-controlling interests	9,338	16,531
Total equity	565,153	594,556
Total Liabilities and Equity	$ 1,228,382	$ 1,254,013

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 7,544	$ 14,524
Preferred stock, undesignated, par (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, undesignated, shares authorized (in Shares)	2,000,000	2,000,000
Preferred stock, undesignated, shares outstanding (in Shares)	0	0
Common stock, par (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in Shares)	125,000,000	125,000,000
Common stock, shares issued (in Shares)	35,156,241	36,053,499
Common stock, shares outstanding (in Shares)	35,156,241	36,053,499

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non- Controlling Interests	Restricted Stock UnitsCommon Stock
Balance at Dec. 31, 2014	$ 645,085	$ 374	$ 217,289	$ 433,641	$ (24,669)	$ 18,450
Balance (in Shares) at Dec. 31, 2014		37,360,515
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,372			1,359		13
Issuance of common stock upon stock option exercises	1,114	$ 1	1,113
Issuance of common stock upon stock option exercises (in Shares)		100,191
Restricted shares issued (in Shares)							10,856
Issuance of shares pursuant to deferred stock unit awards (in Shares)		3,257
Forfeitures of restricted shares	0	$ 0
Forfeitures of restricted shares (in Shares)		(18,195)
Shares repurchased and retired	(7,622)	$ (5)	(7,617)
Shares repurchased and retired (in Shares)		(437,669)
Equity-based compensation expense	1,663		1,663
Currency translation adjustment and derivative transactions, net	(15,666)				(14,659)	(1,007)
Balance at Mar. 31, 2015	625,946	$ 370	212,448	435,000	(39,328)	17,456
Balance (in Shares) at Mar. 31, 2015		37,018,955
Balance at Dec. 31, 2015	$ 594,556	$ 361	199,951	425,574	(47,861)	16,531
Balance (in Shares) at Dec. 31, 2015	36,053,499	36,053,499
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (3,949)			(3,792)		(157)
Issuance of common stock upon stock option exercises	$ 38	$ 0	38
Issuance of common stock upon stock option exercises (in Shares)	18,193	18,193
Restricted shares issued (in Shares)							9,733
Forfeitures of restricted shares	$ 0	$ 0
Forfeitures of restricted shares (in Shares)		(14,528)
Shares repurchased and retired	(16,325)	$ (9)	(16,316)
Shares repurchased and retired (in Shares)		(910,656)
Equity-based compensation expense	2,363		2,363
Sale of non-controlling interest	(7,278)					(7,278)
Currency translation adjustment and derivative transactions, net	(4,252)				(4,494)	242
Balance at Mar. 31, 2016	$ 565,153	$ 352	$ 186,036	$ 421,782	$ (52,355)	$ 9,338
Balance (in Shares) at Mar. 31, 2016	35,156,241	35,156,241

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ (3,949)	$ 1,372
Adjustments to reconcile to net cash used in operating activities:
Depreciation and amortization	11,376	10,486
Gain on sale of fixed assets	(499)	(200)
Equity-based compensation expense	2,363	1,663
Deferred income taxes	(1,187)	(969)
Non-cash restructuring charges	(212)	(1,359)
Loss on sale of businesses	0	2,864
Loss on foreign currency transactions	1,131	216
Other	(485)	(394)
Changes in operating assets and liabilities (net of acquisitions):
Restricted cash related to operating activities	462	(1,093)
Receivables net, retainage and costs and estimated earnings in excess of billings	29,618	(17,442)
Inventories	(1,806)	(3,455)
Prepaid expenses and other assets	3,382	2,379
Accounts payable and accrued expenses	(39,086)	(24,146)
Billings in excess of costs and estimated earnings	(3,672)	16,896
Other operating	582	981
Net cash used in operating activities	(1,982)	(12,201)
Cash flows from investing activities:
Capital expenditures	(10,060)	(4,234)
Proceeds from sale of fixed assets	956	297
Patent expenditures	(541)	(7)
Restricted cash related to investing activities	(1,086)	0
Purchase of Underground Solutions, Inc., net of cash acquired	(85,167)	0
Purchase of Schultz Mechanical Contractors, Inc.	(500)	(6,479)
Sale of interest in Bayou Perma-Pipe Canada, Ltd., net of cash disposed	4,599	0
Payment to Fyfe Asia sellers for final net working capital	0	(1,098)
Net cash used in investing activities	(91,799)	(11,521)
Cash flows from financing activities:
Proceeds from issuance of common stock upon stock option exercises, including tax effects	38	1,399
Repurchase of common stock	(16,325)	(7,622)
Proceeds on notes payable	0	1,505
Proceeds from line of credit	34,000	26,000
Principal payments on long-term debt	(4,375)	(33,031)
Net cash provided by (used in) financing activities	13,338	(11,749)
Effect of exchange rate changes on cash	(3,394)	(3,569)
Net decrease in cash and cash equivalents for the period	(83,837)	(39,040)
Cash and cash equivalents, beginning of period	209,253	174,965
Cash and cash equivalents, end of period	$ 127,859	$ 135,925

General

General	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	GENERAL The accompanying unaudited consolidated financial statements of Aegion Corporation and its subsidiaries (collectively, “Aegion” or the “Company”) reflect all adjustments (consisting only of normal recurring adjustments) that are, in the opinion of management, necessary for a fair presentation of the Company’s financial position, results of operations and cash flows for the dates and periods presented. Results for interim periods are not necessarily indicative of the results to be expected during the remainder of the current year or for any future period. All significant intercompany related accounts and transactions have been eliminated in consolidation. The consolidated balance sheet as of December 31, 2015, which is derived from the audited consolidated financial statements, and the interim unaudited consolidated financial statements included herein have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the requirements of Form 10-Q and Article 10 of Regulation S-X and, consequently, do not include all information or footnotes required by GAAP for complete financial statements or all the disclosures normally made in an Annual Report on Form 10-K. Accordingly, the unaudited consolidated financial statements included herein should be read in conjunction with the audited consolidated financial statements and footnotes included in the Company’s 2015 Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 29, 2016. Acquisitions/Strategic Initiatives/Divestitures 2016 Restructuring On January 4, 2016, the Company’s board of directors approved a restructuring plan (the “2016 Restructuring”) to reduce the Company’s exposure to the upstream oil markets and to reduce consolidated costs. As part of management’s ongoing assessment of its energy-related businesses, the Company determined that the persistent low price of oil is expected to create market challenges for the foreseeable future, including reduced customer spending in 2016. The Company made significant progress in executing its 2016 Restructuring objectives in the first quarter of 2016, and the Company expects to substantially complete by the end of the second quarter of 2016 all of the objectives set forth in the 2016 Restructuring, including repositioning Energy Services’ upstream operations in California, reducing Corrosion Protection’s upstream exposure by divesting its interest in a Canadian pipe coating joint venture, right-sizing Corrosion Protection to compete more effectively and reducing corporate and other operating costs. The 2016 Restructuring is expected to reduce consolidated annual costs between $15.0 million to $16.0 million , most of which is expected to be realized in 2016, primarily through headcount reductions and office closures. See Note 3. Infrastructure Solutions Segment (“Infrastructure Solutions”) On February 18, 2016, the Company acquired Underground Solutions, Inc. and its subsidiary, Underground Solutions Technologies Group, Inc. (collectively, “Underground Solutions”), for a purchase price of $85.0 million plus an additional $5.3 million for the value of the estimated tax benefits associated with Underground Solutions’ net operating loss carry forwards. The purchase price is subject to post-closing working capital adjustments and post-closing adjustments to the value of the net operating loss tax asset. The purchase price included $6.3 million held in escrow as security for the post-closing purchase price adjustments and post-closing indemnification obligations of Underground Solutions’ previous owners. The transaction was funded partially from the Company’s cash balances and partially from borrowings under the Company’s revolving credit facility. To supplement the domestic cash balances, the Company repatriated approximately $30.4 million from foreign subsidiaries to assist in funding the transaction, incurring approximately $3.5 million in additional taxes, a reserve for which was included in the Company’s tax provision amounts for 2015. Underground Solutions provides infrastructure technologies for water, sewer and conduit applications. In February 2015, the Company sold its wholly-owned subsidiary, Video Injection - Insituform SAS (“VII”), the Company’s French cured-in-place pipe (“CIPP”) contracting operation, to certain employees of VII. In connection with the sale, the Company entered into a five -year exclusive tube supply agreement whereby VII will purchase liners from Insituform Linings Limited. VII will also be entitled to continue to use its trade name based on a trade mark license granted for the same five-year time period. The sale resulted in a loss of approximately $2.9 million that was recorded to other income (expense) in the Consolidated Statement of Operations during the first quarter of 2015. On October 6, 2014, the Company’s board of directors approved a realignment and restructuring plan (the “2014 Restructuring”) which included the decision to exit Insituform’s contracting markets in France, Switzerland, Hong Kong, Malaysia and Singapore. The Company has substantially completed all of the aforementioned objectives related to the 2014 Restructuring. See Note 3. Corrosion Protection Segment (“Corrosion Protection”) On February 1, 2016, the Company sold its fifty-one percent ( 51% ) interest in its Canadian coating joint venture, Bayou Perma-Pipe Canada, Ltd. (“BPPC”), to its joint venture partner, Perma-Pipe, Inc. The sale price was US $9.6 million , which consisted of a US $7.6 million payment at closing and a US $2.0 million promissory note payable to Company on or before August 1, 2016. BPPC served as the Company’s pipe coating and insulation operation in Canada. The sale of its interest in BPPC was part of a broader effort by the Company to reduce exposure in the North American upstream market in light of expectations for a prolonged low oil price environment. As a result of the sale, the Company recognized a pre-tax, non-cash charge of approximately $0.6 million at December 31, 2015 to reflect the expected loss on the sale of the business. This loss was derived primarily from the release of cumulative currency translation adjustments and was recorded to other income (expense) in the Consolidated Statement of Operations. Energy Services Segment (“Energy Services”) On March 1, 2015, the Company acquired Schultz Mechanical Contractors, Inc. (“Schultz”), a California corporation, for a total purchase price of $7.7 million . Schultz primarily services customers in California and Arizona and is a provider of piping installations, concrete construction and excavation and trenching services to the downstream and upstream oil and gas markets. Schultz is part of the Company’s Energy Services reportable segment. Purchase Price Accounting During the first quarter of 2016, the Company determined its preliminary accounting for Underground Solutions and finalized its accounting for Schultz. As the Company completes its final accounting for the Underground Solutions acquisition, future adjustments related to working capital, deferred income taxes and goodwill could occur. The goodwill and definite-lived intangible assets associated with the Schultz acquisition are deductible for tax purposes; whereas, the goodwill and definite-lived intangible assets associated with the Underground Solutions acquisition are not deductible for tax purposes. Underground Solutions and Schultz made the following contribution to the Company’s revenues and profits (in thousands): Quarter Ended March 31, 2016 Quarter Ended March 31, 2015 Underground Solutions (1) Schultz Schultz Revenues $ 4,666 $ 4,710 $ 517 Net loss (124 ) (341 ) (7 ) _____________________ (1) The reported net loss for the period includes inventory step up expense of $1.2 million recognized as part of the accounting for business combinations. The following unaudited pro forma summary presents combined information of the Company as if the Underground Solutions and Schultz acquisitions had occurred at the beginning of the year preceding their acquisition (in thousands): Quarters Ended March 31, 2016 2015 Revenues $ 297,532 $ 314,753 Net income (1) (3,850 ) 569 _____________________ (1) Includes pro-forma adjustments for depreciation and amortization associated with acquired tangible and intangible assets, as if those assets were recorded at the beginning of the year preceding the acquisition date. The transaction purchase price to acquire Underground Solutions was $88.8 million , which included: (i) a payment at closing of $85.0 million ; (ii) a payment of $5.3 million for the value of the estimated tax benefits associated with Underground Solutions’ net operating loss carry forwards; and (iii) a preliminary working capital adjustment of $1.5 million (payable to the Company). Total cash consideration recorded to acquire Schultz was $6.7 million , which was funded by the Company’s cash reserves. The cash consideration included the purchase price paid at closing of $7.1 million less working capital adjustments of $0.4 million . The total purchase price was $7.7 million , which represented the cash consideration of $6.7 million plus $1.0 million of deferred contingent consideration. During the first quarter of 2016, $0.5 million of the contingent consideration was paid to the previous owners. The following table summarizes the fair value of identified assets and liabilities of the Underground Solutions and Schultz acquisitions at their respective acquisition dates (in thousands): Underground Solutions Schultz Cash $ 3,630 $ — Receivables and cost and estimated earnings in excess of billings 6,373 1,086 Inventories 12,839 — Prepaid expenses and other current assets 777 19 Property, plant and equipment 2,755 162 Identified intangible assets 34,400 3,060 Deferred income tax assets 12,212 — Other assets 29 — Accounts payable (4,653 ) (663 ) Accrued expenses (5,011 ) — Billings in excess of cost and estimated earnings (2,943 ) — Deferred income tax liabilities (15,232 ) — Total identifiable net assets $ 45,176 $ 3,664 Total consideration recorded $ 88,797 $ 7,662 Less: total identifiable net assets 45,176 3,664 Goodwill at March 31, 2016 $ 43,621 $ 3,998

Accounting Policies

Accounting Policies	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Accounting Policies	ACCOUNTING POLICIES Revenues Revenues include construction, engineering and installation revenues that are recognized using the percentage-of-completion method of accounting in the ratio of costs incurred to estimated final costs. Revenues from change orders, extra work and variations in the scope of work are recognized when it is probable that they will result in additional contract revenue and when the amount can be reliably estimated. Contract costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools and equipment costs. The Company expenses all pre-contract costs in the period these costs are incurred. Since the financial reporting of these contracts depends on estimates, which are assessed continually during the term of these contracts, recognized revenues and profit are subject to revisions as the contract progresses to completion. Revisions in profit estimates are reflected in the period in which the facts that give rise to the revision become known. If material, the effects of any changes in estimates are disclosed in the notes to the consolidated financial statements. When estimates indicate that a loss will be incurred on a contract, a provision for the expected loss is recorded in the period in which the loss becomes evident. Any revenue recognized is only to the extent costs have been recognized in the period. Additionally, the Company expenses all costs for unpriced change orders in the period in which they are incurred. Revenues from the Company’s Energy Services segment are derived mainly from multiple engineering and construction type contracts, as well as maintenance contracts, under multi-year long-term master service agreements and alliance contracts. Businesses within the Company’s Energy Services segment enter into customer contracts that contain three principal types of pricing provisions: time and materials, cost plus fixed fee and fixed price. Although the terms of these contracts vary, most are made pursuant to cost reimbursable contracts on a time and materials basis under which revenues are recorded based on costs incurred at agreed upon contractual rates. These businesses also perform services on a cost plus fixed fee basis under which revenues are recorded based upon costs incurred at agreed upon rates and a proportionate amount of the fixed fee or percentage stipulated in the contract. Foreign Currency Translation Net foreign exchange transaction losses of $1.1 million and $0.2 million for the quarters ended March 31, 2016 and 2015, respectively, are included in other income (expense) in the Consolidated Statements of Operations. For the Company’s international subsidiaries, the local currency is generally the functional currency. Assets and liabilities of these subsidiaries are translated into U.S. dollars using rates in effect at the balance sheet date while revenues and expenses are translated into U.S. dollars using average exchange rates. The cumulative translation adjustment resulting from changes in exchange rates are included in the Consolidated Balance Sheets as a component of accumulated other comprehensive income (loss) in total stockholders’ equity. The Company’s accumulated other comprehensive income is comprised of three main components: (i) currency translation; (ii) derivatives; and (iii) gains and losses associated with the Company’s defined benefit plan in the United Kingdom. As of March 31, 2016 and 2015 , the Company had accumulated comprehensive income (loss) of $(58.1) million and $(38.8) million , respectively, related to currency translation adjustments, $(6.2) million and $0.0 million , respectively, related to derivative transactions and $0.5 million and $(0.5) million , respectively, related to pension activity in accumulated other comprehensive income. Taxation The Company provides for estimated income taxes payable or refundable on current year income tax returns as well as the estimated future tax effects attributable to temporary differences and carryforwards, based upon enacted tax laws and tax rates, and in accordance with FASB ASC 740, Income Taxes (“FASB ASC 740”). FASB ASC 740 also requires that a valuation allowance be recorded against any deferred tax assets that are not likely to be realized in the future. Refer to Note 9 for additional information regarding taxes on income. Purchase Price Accounting The Company accounts for its acquisitions in accordance with FASB ASC 805, Business Combinations . The base cash purchase price plus the estimated fair value of any non-cash or contingent consideration given for an acquired business is allocated to the assets acquired (including identified intangible assets) and liabilities assumed based on the estimated fair values of such assets and liabilities. The excess of the total consideration over the aggregate net fair values assigned is recorded as goodwill. Contingent consideration, if any, is recognized as a liability as of the acquisition date with subsequent adjustments recorded in the consolidated statements of operations. Indirect and general expenses related to business combinations are expensed as incurred. The Company typically determines the fair value of tangible and intangible assets acquired in a business combination using independent valuations that rely on management’s estimates of inputs and assumptions that a market participant would use. Key assumptions include cash flow projections, growth rates, asset lives, and discount rates based on an analysis of weighted average cost of capital. Long-Lived Assets Property, plant and equipment and other identified intangibles (primarily customer relationships, patents and acquired technologies, trademarks, licenses and non-compete agreements) are recorded at cost, net of accumulated depreciation and impairment, and, except for goodwill and certain trademarks, are depreciated or amortized on a straight-line basis over their estimated useful lives. Changes in circumstances such as technological advances, changes to the Company’s business model or changes in the Company’s capital strategy can result in the actual useful lives differing from the Company’s estimates. If the Company determines that the useful life of its property, plant and equipment or its identified intangible assets should be changed, the Company would depreciate or amortize the net book value in excess of the salvage value over its revised remaining useful life, thereby increasing or decreasing depreciation or amortization expense. Long-lived assets, including property, plant and equipment and other intangibles, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Such impairment tests are based on a comparison of undiscounted cash flows to the recorded value of the asset. The estimate of cash flow is based upon, among other things, assumptions about expected future operating performance. The Company’s estimates of undiscounted cash flow may differ from actual cash flow due to, among other things, technological changes, economic conditions, changes to its business model or changes in its operating performance. If the sum of the undiscounted cash flows (excluding interest) is less than the carrying value, the Company recognizes an impairment loss, measured as the amount by which the carrying value exceeds the fair value of the asset. Goodwill Under FASB ASC 350, the Company assesses recoverability of goodwill on an annual basis or when events or changes in circumstances indicate that the carrying amount of goodwill may not be recoverable. An impairment charge will be recognized to the extent that the implied fair value of a reporting unit is less than its carrying value. Factors that could potentially trigger an impairment review include (but are not limited to): • significant underperformance of a reporting unit relative to expected, historical or forecasted operating results; • significant negative industry or economic trends; • significant changes in the strategy for a segment including extended slowdowns in the reporting unit’s market; • a decrease in market capitalization below the Company’s book value; and • a significant change in regulations. Whether during the annual impairment assessment or during a trigger-based impairment review, the Company determines the fair value of its reporting units and compares such fair value to the carrying value of those reporting units to determine if there are any indications of goodwill impairment. Fair value of reporting units is determined using a combination of two valuation methods: a market approach and an income approach with each method given equal weight in determining the fair value assigned to each reporting unit. Absent an indication of fair value from a potential buyer or similar specific transaction, the Company believes the use of these two methods provides a reasonable estimate of a reporting unit’s fair value. Assumptions common to both methods are operating plans and economic outlooks, which are used to forecast future revenues, earnings and after-tax cash flows for each reporting unit. These assumptions are applied consistently for both methods. The market approach estimates fair value by first determining earnings before interest, taxes, depreciation and amortization (“EBITDA”) multiples for comparable publicly-traded companies with similar characteristics of the reporting unit. The EBITDA multiples for comparable companies are based upon current enterprise value. The enterprise value is based upon current market capitalization and includes a control premium. The Company believes this approach is appropriate because it provides a fair value estimate using multiples from entities with operations and economic characteristics comparable to its reporting units. The income approach is based on forecasted future (debt-free) cash flows that are discounted to present value using factors that consider timing and risk of future cash flows. The Company believes this approach is appropriate because it provides a fair value estimate based upon the reporting unit’s expected long-term operating cash flow performance. Discounted cash flow projections are based on financial forecasts developed from operating plans and economic outlooks, growth rates, estimates of future expected changes in operating margins, terminal value growth rates, future capital expenditures and changes in working capital requirements. Estimates of discounted cash flows may differ from actual cash flows due to, among other things, changes in economic conditions, changes to business models, changes in the Company’s weighted average cost of capital, or changes in operating performance. The discount rate applied to the estimated future cash flows is one of the most significant assumptions utilized under the income approach. The Company determines the appropriate discount rate for each of its reporting units based on the weighted average cost of capital (“WACC”) for each individual reporting unit. The WACC takes into account both the pre-tax cost of debt and cost of equity (a major component of the cost of equity is the current risk-free rate on twenty year U.S. Treasury bonds). As each reporting unit has a different risk profile based on the nature of its operations, including market-based factors, the WACC for each reporting unit may differ. Accordingly, the WACCs are adjusted, as appropriate, to account for company-specific risks associated with each reporting unit. Investments in Affiliated Companies Investments in entities in which the Company does not have control or is not the primary beneficiary of a variable interest entity, and for which the Company has 20% to 50% ownership or has the ability to exert significant influence, have historically been accounted for by the equity method. At March 31, 2016 and December 31, 2015 , the Company did not own any investments in affiliated companies. Investments in Variable Interest Entities The Company evaluates all transactions and relationships with variable interest entities (“VIE”) to determine whether the Company is the primary beneficiary of the entities in accordance with FASB ASC 810, Consolidation. The Company’s overall methodology for evaluating transactions and relationships under the VIE requirements includes the following two steps: • determine whether the entity meets the criteria to qualify as a VIE; and • determine whether the Company is the primary beneficiary of the VIE. In performing the first step, the significant factors and judgments that the Company considers in making the determination as to whether an entity is a VIE include: • the design of the entity, including the nature of its risks and the purpose for which the entity was created, to determine the variability that the entity was designed to create and distribute to its interest holders; • the nature of the Company’s involvement with the entity; • whether control of the entity may be achieved through arrangements that do not involve voting equity; • whether there is sufficient equity investment at risk to finance the activities of the entity; and • whether parties other than the equity holders have the obligation to absorb expected losses or the right to receive residual returns. If the Company identifies a VIE based on the above considerations, it then performs the second step and evaluates whether it is the primary beneficiary of the VIE by considering the following significant factors and judgments: • whether the entity has the power to direct the activities of a variable interest entity that most significantly impact the entity’s economic performance; and • whether the entity has the obligation to absorb losses of the entity that could potentially be significant to the variable interest entity or the right to receive benefits from the entity that could potentially be significant to the variable interest entity. Based on its evaluation of the above factors and judgments, as of March 31, 2016 , the Company consolidated any VIEs in which it was the primary beneficiary. Financial data for consolidated variable interest entities are summarized in the following table (in thousands): Balance sheet data March 31, (1) December 31, (2) Current assets $ 39,951 $ 60,730 Non-current assets 25,791 26,316 Current liabilities 18,203 24,784 Non-current liabilities 25,258 25,728 __________________________ (1) Amounts exclude the assets and liabilities of BPPC, which was sold in February 2016. (2) Amounts include $21.1 million of current assets and $7.0 million of current liabilities classified as held for sale. See Note 5. Quarters Ended March 31, Income statement data 2016 (1) 2015 Revenue $ 14,736 $ 18,240 Gross profit 639 2,206 Net income (loss) (2,940 ) 130 __________________________ (1) Includes the results of BPPC through the date of its sale in February 2016. Newly Issued Accounting Pronouncements In March 2016, the FASB issued guidance that simplifies several aspects of the accounting for share-based payment awards to employees, including the accounting for income taxes, classification of awards as either equity or liabilities and classification in the statement of cash flows. The standard is effective for public companies for annual periods beginning after December 15, 2016, including interim periods within those fiscal years. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations. In February 2016, the FASB issued guidance that requires lessees to present right-of-use assets and lease liabilities on the balance sheet. The standard is effective for public companies for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations. In November 2015, the FASB issued guidance that requires all deferred tax assets and liabilities, along with any related valuation allowance, to be presented as non-current within the Consolidated Balance Sheet. It is effective for annual reporting periods beginning after December 15, 2016, but early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its presentation of financial condition. In September 2015, the FASB issued guidance that requires acquirers in a business combination to recognize measurement period adjustments in the reporting period in which the adjustment amounts are determined. This is a change from the previous requirement that the adjustments be recorded retrospectively. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations. In August 2014, the FASB issued guidance that requires management to assess the Company’s ability to continue as a going concern and to provide related disclosures in certain circumstances. The standard is effective for public companies for annual periods beginning after December 15, 2016 and early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company’s presentation of its consolidated financial statements. In May 2014, the FASB issued guidance that supersedes revenue recognition requirements regarding contracts with customers to transfer goods or services or for the transfer of non-financial assets. Under the new guidance, entities are required to recognize revenue in order to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides a five-step analysis to be performed on transactions to determine when and how revenue is recognized. This new guidance is effective retroactively in fiscal years beginning after December 15, 2017. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations.

Restructuring

Restructuring	3 Months Ended
	Mar. 31, 2016
Restructuring and Related Activities [Abstract]
Restructuring	RESTRUCTURING 2016 Restructuring On January 4, 2016, the Company’s board of directors approved the 2016 Restructuring to reduce its exposure to the upstream oil markets and to reduce consolidated costs. The Company made significant progress in executing its 2016 Restructuring objectives in the first quarter of 2016, and the Company expects to substantially complete by the end of the second quarter of 2016 all of the objectives set forth in the 2016 Restructuring, including repositioning Energy Services’ upstream operations in California, reducing Corrosion Protection’s upstream exposure by divesting its interest in a Canadian pipe coating joint venture, right-sizing Corrosion Protection to compete more effectively and reducing corporate and other operating costs. The 2016 Restructuring is expected to reduce consolidated annual costs between $15.0 million to $16.0 million , most of which is expected to be realized in 2016, primarily through headcount reductions and office closures. The Company’s initial savings estimate was approximately $15.0 million . As part of the 2016 Restructuring, the Company expects to reduce headcount by approximately 900 employees, or 14.5% of the Company’s total workforce. Headcount reductions associated with the 2016 Restructuring totaled 705 as of March 31, 2016. In connection with the 2016 Restructuring, the Company expects to record estimated pre-tax charges, most of which are cash charges, between $11.0 million to $13.0 million , which is an increase from the original estimate of between $7.0 million to $9.0 million . The increased cost estimate is the result of longer wind-down efforts associated with downsizing our upstream operations in Energy Services and Corrosion Protection. These charges are expected to consist primarily of employee severance, extension of benefits, employment assistance programs, early lease termination and other restructuring costs. Total pre-tax restructuring charges during the first quarter of 2016 were $9.7 million ( $6.6 million after tax), all of which were cash charges. These charges included employee severance, retention, extension of benefits, employment assistance programs and other restructuring costs associated with the restructuring efforts described above. During the quarter ended March 31, 2016, the Company recorded pre-tax expense related to the 2016 Restructuring as follows (in thousands): Quarter Ended March 31, 2016 Infrastructure Solutions Corrosion Protection Energy Services Total Severance and benefit related costs $ 1,912 $ 2,420 $ 1,309 $ 5,641 Lease termination costs — — 969 969 Relocation and other moving costs — — 120 120 Other restructuring costs (1) 241 317 2,454 3,012 Total pre-tax restructuring charges (2) $ 2,153 $ 2,737 $ 4,852 $ 9,742 __________________________ (1) Primarily includes charges related to the downsizing of the Company's upstream operations in California. (2) Includes $1.0 million of corporate-related restructuring charges that have been allocated to the reportable segments. 2016 Restructuring costs related to severance, other termination benefit costs and early lease termination costs for the quarter ended March 31, 2016 were $6.7 million and are reported, along with similar charges for the 2014 Restructuring, on a separate line in the Consolidated Statements of Operations in accordance with FASB ASC 420, Exit or Disposal Cost Obligations . The following tables summarize all charges related to the 2016 Restructuring recognized in the quarter ended March 31, 2016 as presented in their affected line in the Consolidated Statements of Operations (in thousands): Quarter Ended March 31, 2016 Cost of revenues $ 49 Operating expenses 2,963 Restructuring charges 6,730 Total pre-tax restructuring charges (1) $ 9,742 __________________________ (1) All charges incurred during the period will be settled in cash, either during the current period or future periods. The following tables summarize the 2016 Restructuring activity during the first quarter of 2016 (in thousands): 2016 Utilized in 2016 Reserves at Cash (1) Non-Cash Severance and benefit related costs $ 5,641 $ 3,062 $ — $ 2,579 Lease termination costs 969 583 — 386 Relocation and other moving costs 120 120 — — Other restructuring costs 3,012 2,906 — 106 Total pre-tax restructuring charges $ 9,742 $ 6,671 $ — $ 3,071 __________________________ (1) Refers to cash utilized to settle charges during the first quarter of 2016. 2014 Restructuring On October 6, 2014, the Company’s board of directors approved the 2014 Restructuring to improve gross margins and profitability over the long term by exiting low-return businesses and reducing the size and cost of the Company’s overhead structure. The 2014 Restructuring generated annual operating cost savings of approximately $10.8 million , which was in-line with the Company’s initial estimate, and consisted of approximately $8.4 million and $2.4 million of recognized savings within Infrastructure Solutions and Corrosion Protection, respectively. The Company achieved these cost savings by (i) exiting certain unprofitable international locations for the Company’s Insituform business and consolidating the Company’s worldwide Fyfe business with the Company’s global Insituform business, all of which is in Infrastructure Solutions; and (ii) eliminating certain idle facilities in the Company’s Bayou pipe coating operation in Louisiana, which is in Corrosion Protection. The Company has substantially completed all of the aforementioned objectives related to the 2014 Restructuring. Headcount reductions associated with the 2014 Restructuring totaled 86 as of March 31, 2016. Remaining headcount reductions and cash costs related to the 2014 Restructuring are not expected to be material. Total pre-tax 2014 Restructuring charges since inception were $60.3 million ( $44.8 million after tax) and consisted of non-cash charges totaling $48.3 million and cash charges totaling $12.0 million . The non-cash charges of $48.3 million included (i) $22.2 million related to the impairment of certain long-lived assets and definite-lived intangible assets for Bayou’s pipe coating operation in Louisiana, which is reported in Corrosion Protection, and (ii) $26.1 million related to impairment of definite-lived intangible assets, allowances for accounts receivable, write-off of certain other current assets and long-lived assets, inventory obsolescence, as well as losses related to the sales of the Company’s CIPP contracting operations in France and Switzerland, which are reported in Infrastructure Solutions. Cash charges totaling $12.0 million included employee severance, retention, extension of benefits, employment assistance programs and other costs associated with the restructuring of Insituform’s European and Asia-Pacific operations and Fyfe’s worldwide business. While estimated remaining cash costs to be incurred in 2016 for the 2014 Restructuring are not expected to be material, the Company expects to incur additional non-cash charges in 2016, primarily related to the potential release of cumulative currency translation adjustments resulting from the disposal of certain entities as well as the foreign currency impact from settlement of inter-company loans. During the quarters ended March 31, 2016 and 2015, the Company recorded pre-tax (income) expense related to the 2014 Restructuring as follows (in thousands): Quarters Ended March 31, 2016 2015 Severance and benefit related costs $ 67 $ 516 Lease termination costs — 141 Allowances for doubtful accounts (341 ) (999 ) Other restructuring costs (1) 94 3,880 Total pre-tax restructuring charges (reversals) (2) $ (180 ) $ 3,538 __________________________ (1) For the quarter ended March 31, 2015, includes charges related to the write-off of certain other assets, including the loss on the sale of the CIPP contracting operation in France in February 2015, including the release of cumulative currency translation adjustments, professional fees and certain other restructuring charges. (2) All charges for the quarters ended March 31, 2016 and 2015 relate to Infrastructure Solutions. 2014 Restructuring costs related to severance, other termination benefit costs and early lease termination costs for the quarters ended March 31, 2016 and 2015 were $0.1 million and $0.7 million , respectively, and are reported, along with similar charges for the 2016 Restructuring, on a separate line in the Consolidated Statements of Operations in accordance with FASB ASC 420, Exit or Disposal Cost Obligations . The following tables summarize all charges related to the 2014 Restructuring recognized in the quarters ended March 31, 2016 and 2015 as presented in their affected line in the Consolidated Statements of Operations (in thousands): Quarters Ended March 31, 2016 2015 Other Cash Restructuring Charges (Reversals) (1) Total Other Cash (1) Total Cost of revenues $ — $ (14 ) $ (14 ) $ (166 ) $ 180 $ 14 Operating expenses (341 ) (21 ) (362 ) (1,021 ) 1,153 132 Restructuring charges — 67 67 — 658 658 Other expense (2) 129 — 129 2,692 42 2,734 Total pre-tax restructuring charges (reversals) (3) $ (212 ) $ 32 $ (180 ) $ 1,505 $ 2,033 $ 3,538 __________________________ (1) Cash charges consist of charges incurred during the period that will be settled in cash, either during the current period or future periods. (2) Charges in the quarter ended March 31, 2015 primarily include the loss on sale of the CIPP contracting operation in France in February 2015, including the release of cumulative currency translation adjustments. (3) All charges relate to Infrastructure Solutions. The following tables summarize the 2014 Restructuring activity during the first quarters of 2016 and 2015 (in thousands): Utilized Reserves at December 31, 2015 Charge (Credit) to Income Foreign Currency Translation Cash (1) Non-Cash Reserves at March 31, 2016 Severance and benefit related costs $ — $ 67 $ — $ — $ — $ 67 Lease termination expenses — — — — — — Allowances for doubtful accounts 6,605 (341 ) 49 — 235 6,078 Other restructuring costs 968 94 33 45 129 921 Total pre-tax restructuring charges (reversals) $ 7,573 $ (180 ) $ 82 $ 45 $ 364 $ 7,066 __________________________ (1) Refers to cash utilized to settle charges, either those reserved at December 31, 2015 or charged to income during the first quarter of 2016. Utilized Reserves at December 31, 2014 Charge Foreign Currency Translation Cash (1) Non-Cash Reserves at March 31, 2015 Severance and benefit related costs $ 466 $ 516 $ (2 ) $ 82 $ — $ 898 Lease termination expenses — 141 — 141 — — Allowances for doubtful accounts 11,464 (999 ) (1 ) — (124 ) 10,588 Other restructuring costs 2,496 3,880 (102 ) 1,297 2,572 2,405 Total pre-tax restructuring charges $ 14,426 $ 3,538 $ (105 ) $ 1,520 $ 2,448 $ 13,891 __________________________ (1) Refers to cash utilized to settle charges, either those reserved at December 31, 2014 or charged to income during the first quarter of 2015.

Share Information

Share Information	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Share Information	SHARE INFORMATION Earnings per share have been calculated using the following share information: Quarters Ended March 31, 2016 2015 Weighted average number of common shares used for basic EPS 35,488,580 37,309,829 Effect of dilutive stock options and restricted and deferred stock unit awards — 231,720 Weighted average number of common shares and dilutive potential common stock used in dilutive EPS 35,488,580 37,541,549 The Company excluded 391,885 stock options and restricted and deferred stock units in the first quarter of 2016 from the diluted earnings per share calculation for the Company’s common stock because of the reported net loss for the period. The Company excluded 164,014 and 270,061 stock options for the quarters ended March 31, 2016 and 2015 , respectively, from the diluted earnings per share calculations for the Company’s common stock because they were anti-dilutive as their exercise prices were greater than the average market price of common shares for each period.

Assets Held For Sale

Assets Held For Sale	3 Months Ended
	Mar. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Assets Held For Sale	ASSETS HELD FOR SALE On December 31, 2015, the Company entered into a definitive agreement to sell its 51% interest in BPPC, a pipe coatings company in Western Canada, to its joint venture partner, MFRI, Inc. The transaction closed effective February 1, 2016. BPPC was classified as held-for-sale at December 31, 2015. See Note 1 for further discussion of this sale. The following table provides the components of assets and liabilities held for sale (in thousands): December 31, 2015 Assets held for sale: Total current assets $ 8,559 Property, plant & equipment, less accumulated depreciation 12,501 Total assets held for sale $ 21,060 Liabilities held for sale: Total current liabilities $ 944 Debt 1,924 Deferred income tax liabilities 1,473 Other liabilities 2,620 Total liabilities held for sale $ 6,961 Non-controlling interests $ 7,142

Goodwill and Identified Intangi

Goodwill and Identified Intangible Assets	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Identified Intangible Assets	GOODWILL AND IDENTIFIED INTANGIBLE ASSETS Goodwill The following table presents a reconciliation of the beginning and ending balances of the Company’s goodwill at January 1, 2016 and March 31, 2016 (in thousands): Infrastructure Corrosion Energy Total Balance, January 1, 2016 Goodwill, gross $ 190,525 $ 73,345 $ 80,246 $ 344,116 Accumulated impairment losses (16,069 ) (45,400 ) (33,527 ) (94,996 ) Goodwill, net 174,456 27,945 46,719 249,120 Acquisitions (1) 43,621 — — 43,621 Foreign currency translation 1,138 600 — 1,738 Balance, March 31, 2016 Goodwill, gross 235,284 73,945 80,246 389,475 Accumulated impairment losses (16,069 ) (45,400 ) (33,527 ) (94,996 ) Goodwill, net $ 219,215 $ 28,545 $ 46,719 $ 294,479 __________________________ (1) During the first quarter of 2016, the Company recorded goodwill of $43.6 million related to the acquisition of Underground Solutions (see Note 1). Identified Intangible Assets Identified intangible assets consisted of the following (in thousands): (in thousands) March 31, 2016 December 31, 2015 Weighted Average Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount License agreements 4.1 $ 3,898 $ (3,320 ) $ 578 $ 3,893 $ (3,275 ) $ 618 Leases 11.3 2,065 (801 ) 1,264 2,065 (764 ) 1,301 Trademarks (1) 15.0 24,079 (6,649 ) 17,430 22,519 (6,262 ) 16,257 Non-competes 2.2 1,210 (972 ) 238 1,210 (945 ) 265 Customer relationships (1) 12.5 185,222 (44,779 ) 140,443 164,779 (41,967 ) 122,812 Patents and acquired technology (1) 13.7 68,492 (22,947 ) 45,545 55,260 (22,395 ) 32,865 $ 284,966 $ (79,468 ) $ 205,498 $ 249,726 $ (75,608 ) $ 174,118 __________________________ (1) During the first quarter of 2016, the Company recorded trademarks, customer relationships and acquired technology of $20.2 million , $1.5 million and $12.8 million , respectively, related to the acquisition of Underground Solutions (see Note 1). Amortization expense was $3.7 million and $3.1 million for the quarters ended March 31, 2016 and 2015 , respectively. Estimated amortization expense by year is as follows (in thousands): 2016 $ 16,544 2017 17,040 2018 16,937 2019 16,749 2020 16,715

Long-Term Debt and Credit Facil

Long-Term Debt and Credit Facility	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Long-Term Debt and Credit Facility	LONG-TERM DEBT AND CREDIT FACILITY Financing Arrangements Long-term debt, term note and notes payable consisted of the following (in thousands): March 31, December 31, Term note, due October 30, 2020, annualized rates of 2.63% and 2.61%, respectively $ 341,250 $ 345,625 Line of credit, 2.44% 34,000 — Other notes with interest rates from 3.3% to 6.5% 9,852 9,797 Subtotal 385,102 355,422 Less – Current maturities and notes payable 17,649 17,648 Less – Unamortized loan costs 4,072 4,294 Total $ 363,381 $ 333,480 In October 2015, the Company entered into an amended and restated $650.0 million senior secured credit facility (the “Credit Facility”) with a syndicate of banks. Bank of America, N.A. served as the sole administrative agent and JP Morgan Chase Bank, N.A. and U.S. Bank National Association acted as co-syndication agents. Merrill Lynch Pierce Fenner & Smith Incorporated, JPMorgan Securities LLC and U.S. Bank National Association acted as joint lead arrangers and joint book managers in the syndication of the Credit Facility. The Credit Facility consists of a $300.0 million five -year revolving line of credit and a $350.0 million five -year term loan facility. The Company drew the entire term loan from the Credit Facility to (i) retire $344.7 million in indebtedness outstanding under the Company’s prior credit facility; (ii) fund expenses associated with the Credit Facility; and (iii) for general corporate purposes. Generally, interest is charged on the principal amounts outstanding under the Credit Facility at the British Bankers Association LIBOR rate plus an applicable rate ranging from 1.25% to 2.25% depending on the Company’s consolidated leverage ratio. The Company can also opt for an interest rate equal to a base rate (as defined in the credit documents) plus an applicable rate, which also is based on the Company’s consolidated leverage ratio. The applicable LIBOR borrowing rate (LIBOR plus Company’s applicable rate) as of March 31, 2016 was approximately 2.48% . The Company’s indebtedness at March 31, 2016 consisted of $341.3 million outstanding from the $350.0 million term loan under the Credit Facility and $34.0 million on the line of credit under the Credit Facility. In February 2016, the Company borrowed $30.0 million on the line of credit to help fund the acquisition of Underground Solutions and in March 2016 borrowed $4.0 million for international working capital needs. Additionally, the Company designated $9.6 million of debt held by its joint venture partners (representing funds loaned by its joint venture partners) as third-party debt in the consolidated financial statements and held $0.2 million of third-party notes and bank debt at March 31, 2016 . Beginning in the first quarter of 2016, FASB ASC 835-30, Interest–Imputation of Interest (“FASB ASC 835-30”) requires a change in the balance sheet presentation of debt issuance costs to be a deduction from the carrying amount of the related debt liability instead of a deferred charge as previously reported. As such, the Company has presented unamortized loan costs of $4.1 million and $4.3 million at March 31, 2016 and December 31, 2015, respectively, as a reduction to long-term debt on the Company’s consolidated balance sheet. Comparable periods have been retrospectively adjusted in accordance with FASB ASC 835-30. As of March 31, 2016 , the Company had $31.8 million in letters of credit issued and outstanding under the Credit Facility. Of such amount, $16.6 million was collateral for the benefit of certain of our insurance carriers and $15.2 million was for letters of credit or bank guarantees of performance or payment obligations of foreign subsidiaries. The Company’s indebtedness at December 31, 2015 consisted of $345.6 million outstanding from the term loan under the Credit Facility and zero on the line of credit under the Credit Facility. Additionally, the Company designated $9.6 million of debt held by its joint ventures (representing funds loaned by its joint venture partners) as third-party debt in the consolidated financial statements and held $0.1 million of third-party notes and bank debt at December 31, 2015 . Further, the Company had $1.9 million in debt listed as held for sale at December 31, 2015 relating to the sale of BPPC (see Note 5). At March 31, 2016 and December 31, 2015, the estimated fair value of the Company’s long-term debt was approximately $388.7 million and $349.1 million , respectively. Fair value was estimated using market rates for debt of similar risk and maturity and a discounted cash flow model, which are based on Level 3 inputs as defined in Note 11. In October 2015, the Company entered into an interest rate swap agreement for a notional amount of $262.5 million , which is set to expire in October 2020. The notional amount of this swap mirrors the amortization of a $262.5 million portion of the Company’s $350.0 million term loan drawn from the Credit Facility. The swap requires the Company to make a monthly fixed rate payment of 1.46% calculated on the amortizing $262.5 million notional amount, and provides for the Company to receive a payment based upon a variable monthly LIBOR interest rate calculated on the amortizing $262.5 million notional amount. The annualized borrowing rate of the swap at March 31, 2016 was 3.46% . The receipt of the monthly LIBOR-based payment offsets a variable monthly LIBOR-based interest cost on a corresponding $262.5 million portion of the Company’s term loan from the Credit Facility. This interest rate swap is used to partially hedge the interest rate risk associated with the volatility of monthly LIBOR rate movement, and is accounted for as a cash flow hedge. The Credit Facility is subject to certain financial covenants, including a consolidated financial leverage ratio and consolidated fixed charge coverage ratio. Subject to the specifically defined terms and methods of calculation as set forth in the Credit Facility’s credit agreement, the financial covenant requirements, as of each quarterly reporting period end, are defined as follows: • Consolidated financial leverage ratio compares consolidated funded indebtedness to Credit Facility defined income. The initial maximum amount was not to initially exceed 3.75 to 1.00. In connection with the acquisition of Underground Solutions, the Company executed a one-time election, in accordance with the Credit Agreement, to increase the consolidated financial leverage ratio to 4.00 to 1.00 for a period of one year. After which, the ratio will decrease periodically at scheduled reporting periods to not more that 3.75 to 1.00 beginning with the quarter ending March 31, 2017. At March 31, 2016 , the Company’s consolidated financial leverage ratio was 3.42 to 1.00 and, using the Credit Facility defined income, the Company had the capacity to borrow up to $65.9 million of additional debt. • Consolidated fixed charge coverage ratio compares Credit Facility defined income to Credit Facility defined fixed charges with a minimum permitted ratio of not less than 1.25 to 1.00. At March 31, 2016 , the Company’s fixed charge ratio was 1.57 to 1.00. At March 31, 2016 , the Company was in compliance with all of its debt and financial covenants as required under the Credit Facility.

Stockholders' Equity and Equity

Stockholders' Equity and Equity Compensation	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Stockholders' Equity and Equity Compensation	STOCKHOLDERS’ EQUITY AND EQUITY COMPENSATION Share Repurchase Plan In November 2015, and in connection with the terms of the amended Credit Facility, the Company’s Board of Directors authorized the repurchase of up to $20.0 million of the Company’s common stock to be made during 2015 and 2016. In March 2016, the Company’s board of directors authorized the open market repurchase of up to an additional $20.0 million of the Company’s common stock during 2016 following expiration of the November 2015 program. The Company began repurchasing shares under this new program in April 2016 immediately following completion of the November 2015 program. In addition to the above, the Company has authorization under the Credit Facility to repurchase up to an additional $20.0 million of the Company’s common stock during 2016. Once a repurchase is complete, the Company promptly retires the shares. The Company is also authorized to utilize up to $10.0 million in cash to purchase shares of the Company’s common stock in each calendar year in connection with the Company’s equity compensation programs for employees. The participants in the Company’s equity plans may surrender shares of common stock in satisfaction of tax obligations arising from the vesting of restricted stock awards under such plans and in connection with the exercise of stock option awards. The deemed price paid is the closing price of the Company’s common stock on the Nasdaq Global Select Market on the date that the restricted stock vests or the shares of the Company’s common stock are surrendered in exchange for stock option exercises. The option holder may elect a “net, net” exercise in connection with the exercise of employee stock options such that the option holder receives a number of shares equal to (i) the built-in gain in the option shares divided by the market price of the Company’s common stock on the date of exercise, less (ii) a number of shares equal to the taxes due upon the exercise of the option divided by the market price of the Company’s common stock on the date of exercise. The shares of Company common stock surrendered to the Company for taxes due on the exercise of the option are deemed repurchased by the Company. During the quarter ended March 31, 2016 , the Company acquired 858,582 shares of the Company’s common stock for $15.3 million ( $17.83 average price per share) through the open market repurchase program discussed above and 52,074 shares of the Company’s common stock for $1.0 million ( $19.61 average price per share) in connection with the vesting of restricted stock, restricted stock units and the exercise of stock options. Once repurchased, the Company immediately retired all such shares. Equity-Based Compensation Plans At March 31, 2016 , the Company had two active equity-based compensation plans under which awards may be made, including stock appreciation rights, restricted shares of common stock, performance awards, stock options and stock units. The Company’s 2013 Employee Equity Incentive Plan (the “2013 Employee Plan”) has 2,895,000 shares of the Company’s common stock reserved for issuance and, at March 31, 2016 , 350,022 shares of common stock were available for issuance. The Company’s 2011 Non-Employee Director Equity Incentive Plan (“2011 Director Plan”) has 250,000 shares of the Company’s common stock registered for issuance and, at March 31, 2016 , 69,264 shares of common stock were available for issuance. Stock Awards Stock awards, which include shares of restricted stock, restricted stock units and restricted performance units, are awarded from time to time to executive officers and certain key employees of the Company. Stock award compensation is recorded based on the award date fair value and charged to expense ratably through the requisite service period. The forfeiture of unvested restricted stock, restricted stock units and restricted performance units causes the reversal of all previous expense recorded as a reduction of current period expense. A summary of the stock award activity is as follows: Quarter Ended March 31, 2016 Stock Awards Weighted Average Award Date Fair Value Outstanding at January 1, 2016 1,275,707 $ 19.60 Restricted shares awarded — — Restricted stock units awarded 274,058 18.20 Performance stock units awarded 234,776 18.24 Restricted shares distributed (143,993 ) 23.65 Restricted stock units distributed (9,733 ) 21.58 Performance stock units distributed — — Restricted shares forfeited (14,528 ) 23.40 Restricted stock units forfeited (45,340 ) 17.33 Performance stock units forfeited (41,484 ) 18.68 Outstanding at March 31, 2016 1,529,463 $ 18.80 Expense associated with stock awards was $2.3 million and $1.5 million for the quarters ended March 31, 2016 and 2015 , respectively. Unrecognized pre-tax expense of $18.8 million related to stock awards is expected to be recognized over the weighted average remaining service period of 2.26 years for awards outstanding at March 31, 2016 . Deferred Stock Unit Awards Deferred stock units are generally awarded to directors of the Company and represent the Company’s obligation to transfer one share of the Company’s common stock to the grantee at a future date and are generally fully vested on the date of grant. The expense related to the issuance of deferred stock units is recorded as of the date of the award. A summary of deferred stock unit activity is as follows: Quarter Ended March 31, 2016 Deferred Stock Units Weighted Average Award Date Fair Value Outstanding at January 1, 2016 247,219 $ 19.92 Awarded 1,062 19.07 Distributed — — Outstanding at March 31, 2016 248,281 $ 19.91 Expense associated with awards of deferred stock units was immaterial for the quarters ended March 31, 2016 and 2015 , respectively. Stock Options Stock options on the Company’s common stock are awarded from time to time to executive officers and certain key employees of the Company. Stock options granted generally have a term of seven to ten years and an exercise price equal to the market value of the underlying common stock on the date of grant. A summary of stock option activity is as follows: Quarter Ended March 31, 2016 Shares Weighted Average Exercise Price Outstanding at January 1, 2016 288,383 $ 21.78 Granted — — Exercised (18,193 ) 16.80 Canceled/Expired — — Outstanding at March 31, 2016 270,190 $ 22.06 Exercisable at March 31, 2016 270,190 $ 22.06 Expense associated with stock option grants was $0.0 million and $0.1 million in the quarters ended March 31, 2016 and 2015 , respectively. There was no unrecognized pre-tax expense related to stock option grants at March 31, 2016 . Financial data for stock option exercises are summarized as follows (in thousands): Quarters Ended March 31, 2016 2015 Amount collected from stock option exercises $ 306 $ 1,299 Total intrinsic value of stock option exercises 352 273 Tax shortfall of stock option exercises recorded in additional paid-in-capital 18 100 Aggregate intrinsic value of outstanding stock options 320 543 Aggregate intrinsic value of exercisable stock options 320 543 The intrinsic value calculations are based on the Company’s closing stock price of $21.09 and $18.05 on March 31, 2016 and 2015 , respectively. The Company uses a binomial option-pricing model for valuation purposes to reflect the features of stock options granted. Volatility, expected term and dividend yield assumptions are based on the Company’s historical experience. The risk-free rate is based on a U.S. treasury note with a maturity similar to the option grant’s expected term. There were no stock options awarded during 2016 or 2015 .

Taxes on Income

Taxes on Income	3 Months Ended
	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Taxes on Income	TAXES ON INCOME The Company’s effective tax rate in the quarter ended March 31, 2016 was a benefit of 54.6% on a pre-tax loss and was favorably impacted by a $1.9 million benefit related to the reversal of a previously recorded valuation allowance due to changes in the realization of future tax benefits. For the quarter ended March 31, 2015 , the Company’s effective tax rate was 57.6% . The high effective tax rate on pre-tax income was unfavorably impacted by a relatively small income tax benefit recorded on pre-tax charges related to the 2014 Restructuring and the impact of discrete tax items that were related to non-deductible restructuring charges. In addition, the rate was negatively influenced by recording no tax benefit on losses in jurisdictions where valuation allowances were recorded against deferred tax assets.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Litigation The Company is involved in certain litigation incidental to the conduct of its business and affairs. Management, after consultation with legal counsel, does not believe that the outcome of any such litigation, individually or in the aggregate, will have a material adverse effect on the Company’s consolidated financial condition, results of operations or cash flows. Contingencies In February 2016, the Company entered into a conditional agreement to settle an outstanding dispute with a project client in the Infrastructure Solutions platform. As a result of the conditional settlement, the Company recorded a $2.7 million accrual as of December 31, 2015 in accordance with FASB ASC Subtopic No. 450-20, Contingencies - Loss Contingencies (“FASB ASC 450-20”). In March 2016, the Company entered into the final agreement and paid the settlement amount in April 2016. In connection with the Brinderson acquisition, certain pre-acquisition matters were identified in 2014 whereby a loss is both probable and reasonably estimable. The Company identified the range of possible loss from zero to $24 million . The Company establishes liabilities in accordance with FASB ASC 450-20, and accordingly, recorded an accrual related to various legal, tax, employee benefit and employment matters. As of March 31, 2016 and December 31, 2015 , the remaining accrual relating to the matter was $10.5 million and represented the Company’s reasonable estimate of probable loss related to the Brinderson pre-acquisition matters. The Company believes it has meritorious defenses against certain of these remaining matters. Purchase Commitments The Company had no material purchase commitments at March 31, 2016 . Guarantees The Company has many contracts that require the Company to indemnify the other party against loss from claims, including claims of patent or trademark infringement or other third party claims for injuries, damages or losses. The Company has agreed to indemnify its surety against losses from third-party claims of subcontractors. The Company has not previously experienced material losses under these provisions and, while there can be no assurances, currently does not anticipate any future material adverse impact on its consolidated financial position, results of operations or cash flows. The Company regularly reviews its exposure under all its engagements, including performance guarantees by contractual joint ventures and indemnification of its surety. As a result of the most recent review, the Company has determined that the risk of material loss is remote under these arrangements and has not recorded a liability for these risks at March 31, 2016 on its consolidated balance sheet.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Segment Reporting	SEGMENT REPORTING The Company has three operating segments, which are also its reportable segments: Infrastructure Solutions; Corrosion Protection; and Energy Services. The Company’s operating segments correspond to its management organizational structure. Each operating segment has a president who reports to the Company’s chief executive officer, who is also the chief operating decision manager (“CODM”). The operating results and financial information reported by each of the segments are evaluated separately, regularly reviewed and used by the CODM to evaluate segment performance, allocate resources and determine management incentive compensation. The following disaggregated financial results have been prepared using a management approach that is consistent with the basis and manner with which management internally disaggregates financial information for the purpose of making internal operating decisions. Financial results for discontinued operations have been removed for all periods presented, and prior year periods have been recast to conform to the current year presentation. The Company evaluates performance based on stand-alone operating income (loss). Financial information by segment was as follows (in thousands): Quarters Ended March 31, 2016 (1) 2015 (2) Revenues: Infrastructure Solutions $ 125,762 $ 122,473 Corrosion Protection 92,446 101,743 Energy Services 75,700 84,950 Total revenues $ 293,908 $ 309,166 Gross profit: Infrastructure Solutions $ 29,744 $ 28,615 Corrosion Protection 17,199 20,829 Energy Services 7,471 9,746 Total gross profit $ 54,414 $ 59,190 Operating income (loss): Infrastructure Solutions (3) $ 5,808 $ 7,332 Corrosion Protection (4) (5,670 ) 500 Energy Services (5) (4,277 ) 1,293 Total operating income (loss) $ (4,139 ) $ 9,125 _______________________ (1) Results include: (i) $9.7 million of 2016 Restructuring charges (see Note 3), (ii) $0.2 million of 2014 Restructuring expense reversals (see Note 3); (iii) $1.0 million of costs incurred related to the acquisition of Underground Solutions and other acquisition targets; and (iv) inventory step up expense of $1.2 million recognized as part of the accounting for business combinations (see Note 1). (2) Results include: (i) $0.8 million of 2014 Restructuring charges (see Note 3); and (ii) $0.3 million of costs incurred related to the acquisition of Schultz and other acquisition targets. (3) Operating income for the quarter ended March 31, 2016 includes: (i) $2.2 million of 2016 Restructuring charges (see Note 3), (ii) $0.2 million of 2014 Restructuring expense reversals (see Note 3); (iii) $1.0 million of costs incurred related to the acquisitions of Underground Solutions and other acquisition targets; and (iv) inventory step up expense of $1.2 million recognized as part of the accounting for business combinations (see Note 1). Operating income for the quarter ended March 31, 2015 includes $0.8 million of 2014 Restructuring charges (see Note 3). (4) Operating loss for the quarter ended March 31, 2016 includes: (i) $2.7 million of 2016 Restructuring charges (see Note 3). (5) Operating loss for the quarter ended March 31, 2016 includes: (i) $4.9 million of 2016 Restructuring charges (see Note 3). Operating income for the quarter ended March 31, 2015 includes $0.3 million of costs incurred related to the acquisition of Schultz and other acquisition targets. The following table summarizes revenues, gross profit and operating income by geographic region (in thousands): Quarters Ended March 31, 2016 2015 Revenues (1) : United States $ 223,569 $ 223,141 Canada 27,619 46,651 Europe 13,821 14,118 Other foreign 28,899 25,256 Total revenues $ 293,908 $ 309,166 Gross profit: United States $ 39,862 $ 37,854 Canada 5,414 12,188 Europe 2,789 4,225 Other foreign 6,349 4,923 Total gross profit $ 54,414 $ 59,190 Operating income (loss): United States $ (7,552 ) $ (2,913 ) Canada 1,569 8,599 Europe 159 1,471 Other foreign 1,685 1,968 Total operating income (loss) $ (4,139 ) $ 9,125 __________________________ (1) Revenues are attributed to the country of origin for the Company’s legal entities. For a significant majority of its legal entities, the country of origin relates to the country or geographic area that it services.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	DERIVATIVE FINANCIAL INSTRUMENTS As a matter of policy, the Company uses derivatives for risk management purposes, and does not use derivatives for speculative purposes. From time to time, the Company may enter into foreign currency forward contracts to hedge foreign currency cash flow transactions. For cash flow hedges, a gain or loss is recorded in the consolidated statements of operations upon settlement of the hedge. All of the Company’s hedges that are designated as hedges for accounting purposes were highly effective; therefore, no notable amounts of hedge ineffectiveness were recorded in the Company’s consolidated statements of operations for the outstanding hedged balance. During each of the quarters ended March 31, 2016 and 2015 , the Company recorded less than $0.1 million as a gain on the consolidated statements of operations in the other income (expense) line item upon settlement of the cash flow hedges. At March 31, 2016 , the Company recorded a net deferred loss of $6.2 million related to the cash flow hedges in accrued expenses and other comprehensive income on the consolidated balance sheets and on the foreign currency translation adjustment and derivative transactions line of the consolidated statements of equity. The Company presents derivative instruments in the consolidated financial statements on a gross basis. The gross and net difference of derivative instruments are considered to be immaterial to the financial position presented in the financial statements. The Company engages in regular inter-company trade activities and receives royalty payments from its wholly-owned Canadian entities, paid in Canadian dollars, rather than the Company’s functional currency, U.S. dollars. The Company utilizes foreign currency forward exchange contracts to mitigate the currency risk associated with the anticipated future payments from its Canadian entities. In October 2015, the Company entered into an interest rate swap agreement for a notional amount of $262.5 million , which is set to expire in October 2020. The notional amount of this swap mirrored the amortization of a $262.5 million portion of the Company’s $350.0 million term loan drawn from the Credit Facility. The swap requires the Company to make a monthly fixed rate payment of 1.46% calculated on the amortizing $262.5 million notional amount, and provides for the Company to receive a payment based upon a variable monthly LIBOR interest rate calculated by amortizing the $262.5 million same notional amount. The annualized borrowing rate of the swap at March 31, 2016 was 3.46% . The receipt of the monthly LIBOR-based payment offset a variable monthly LIBOR-based interest cost on a corresponding $262.5 million portion of the Company’s term loan from the Credit Facility. This interest rate swap is used to partially hedge the interest rate risk associated with the volatility of monthly LIBOR rate movement, and is accounted for as a cash flow hedge. The following table provides a summary of the fair value amounts of our derivative instruments, all of which are Level 2 inputs as defined below (in thousands): Designation of Derivatives Balance Sheet Location March 31, December 31, Derivatives Designated as Hedging Instruments: Forward Currency Contracts Prepaid expenses and other current assets $ — $ 18 Total Assets $ — $ 18 Forward Currency Contracts Accrued expenses $ 1,148 $ 243 Interest Rate Swaps Other non-current liabilities 5,055 13 Total Liabilities $ 6,203 $ 256 Derivatives Not Designated as Hedging Instruments: Forward Currency Contracts Prepaid expenses and other current assets $ — $ 91 Total Assets $ — $ 91 Forward Currency Contracts Accrued expenses $ 151 $ — Total Liabilities $ 151 $ — Total Derivative Assets $ — $ 109 Total Derivative Liabilities 6,354 256 Total Net Derivative Liability $ (6,354 ) $ (147 ) FASB ASC 820, Fair Value Measurements (“FASB ASC 820”), defines fair value, establishes a framework for measuring fair value and expands disclosure requirements about fair value measurements for interim and annual reporting periods. The guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1 – defined as quoted prices in active markets for identical instruments; Level 2 – defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3 – defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. In accordance with FASB ASC 820, the Company determined that the instruments summarized below are derived from significant observable inputs, referred to as Level 2 inputs. The following table represents assets and liabilities measured at fair value on a recurring basis and the basis for that measurement at March 31, 2016 and December 31, 2015 (in thousands): Total Fair Value at Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Forward Currency Contracts $ — $ — $ — $ — Total $ — $ — $ — $ — Liabilities: Forward Currency Contracts $ 1,299 $ — $ 1,299 $ — Interest Rate Swap 5,055 — 5,055 — Total $ 6,354 $ — $ 6,354 $ — Total Fair Value at Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Forward Currency Contracts $ 109 $ — $ 109 $ — Total $ 109 $ — $ 109 $ — Liabilities: Forward Currency Contracts $ 243 $ — $ 243 $ — Interest Rate Swap 13 — 13 — Total $ 256 $ — $ 256 $ — The following table summarizes the Company’s derivative positions at March 31, 2016 : Position Notional Amount Weighted Average Remaining Maturity In Years Average Exchange Rate Canadian Dollar/USD Sell $ 3,704,127 0.2 1.30 USD/British Pound Sell £ 4,595,000 0.2 1.44 EURO/British Pound Sell £ 8,000,000 0.2 0.79 Interest Rate Swap $ 255,937,500 4.6 The Company had no transfers between Level 1, 2 or 3 inputs during the quarter ended March 31, 2016 . Certain financial instruments are required to be recorded at fair value. Changes in assumptions or estimation methods could affect the fair value estimates; however, the Company does not believe any such changes would have a material impact on its financial condition, results of operations or cash flows. Other financial instruments including cash and cash equivalents and short-term borrowings, including notes payable, are recorded at cost, which approximates fair value, which are based on Level 2 inputs as previously defined.

Accounting Policies (Policies)

Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Revenues	Revenues Revenues include construction, engineering and installation revenues that are recognized using the percentage-of-completion method of accounting in the ratio of costs incurred to estimated final costs. Revenues from change orders, extra work and variations in the scope of work are recognized when it is probable that they will result in additional contract revenue and when the amount can be reliably estimated. Contract costs include all direct material and labor costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools and equipment costs. The Company expenses all pre-contract costs in the period these costs are incurred. Since the financial reporting of these contracts depends on estimates, which are assessed continually during the term of these contracts, recognized revenues and profit are subject to revisions as the contract progresses to completion. Revisions in profit estimates are reflected in the period in which the facts that give rise to the revision become known. If material, the effects of any changes in estimates are disclosed in the notes to the consolidated financial statements. When estimates indicate that a loss will be incurred on a contract, a provision for the expected loss is recorded in the period in which the loss becomes evident. Any revenue recognized is only to the extent costs have been recognized in the period. Additionally, the Company expenses all costs for unpriced change orders in the period in which they are incurred. Revenues from the Company’s Energy Services segment are derived mainly from multiple engineering and construction type contracts, as well as maintenance contracts, under multi-year long-term master service agreements and alliance contracts. Businesses within the Company’s Energy Services segment enter into customer contracts that contain three principal types of pricing provisions: time and materials, cost plus fixed fee and fixed price. Although the terms of these contracts vary, most are made pursuant to cost reimbursable contracts on a time and materials basis under which revenues are recorded based on costs incurred at agreed upon contractual rates. These businesses also perform services on a cost plus fixed fee basis under which revenues are recorded based upon costs incurred at agreed upon rates and a proportionate amount of the fixed fee or percentage stipulated in the contract.
Foreign Currency Translation	Foreign Currency Translation Net foreign exchange transaction losses of $1.1 million and $0.2 million for the quarters ended March 31, 2016 and 2015, respectively, are included in other income (expense) in the Consolidated Statements of Operations. For the Company’s international subsidiaries, the local currency is generally the functional currency. Assets and liabilities of these subsidiaries are translated into U.S. dollars using rates in effect at the balance sheet date while revenues and expenses are translated into U.S. dollars using average exchange rates. The cumulative translation adjustment resulting from changes in exchange rates are included in the Consolidated Balance Sheets as a component of accumulated other comprehensive income (loss) in total stockholders’ equity. The Company’s accumulated other comprehensive income is comprised of three main components: (i) currency translation; (ii) derivatives; and (iii) gains and losses associated with the Company’s defined benefit plan in the United Kingdom.
Taxation	Taxation The Company provides for estimated income taxes payable or refundable on current year income tax returns as well as the estimated future tax effects attributable to temporary differences and carryforwards, based upon enacted tax laws and tax rates, and in accordance with FASB ASC 740, Income Taxes (“FASB ASC 740”). FASB ASC 740 also requires that a valuation allowance be recorded against any deferred tax assets that are not likely to be realized in the future. Refer to Note 9 for additional information regarding taxes on income.
Purchase Price Accounting	Purchase Price Accounting The Company accounts for its acquisitions in accordance with FASB ASC 805, Business Combinations . The base cash purchase price plus the estimated fair value of any non-cash or contingent consideration given for an acquired business is allocated to the assets acquired (including identified intangible assets) and liabilities assumed based on the estimated fair values of such assets and liabilities. The excess of the total consideration over the aggregate net fair values assigned is recorded as goodwill. Contingent consideration, if any, is recognized as a liability as of the acquisition date with subsequent adjustments recorded in the consolidated statements of operations. Indirect and general expenses related to business combinations are expensed as incurred. The Company typically determines the fair value of tangible and intangible assets acquired in a business combination using independent valuations that rely on management’s estimates of inputs and assumptions that a market participant would use. Key assumptions include cash flow projections, growth rates, asset lives, and discount rates based on an analysis of weighted average cost of capital.
Long-Lived Assets	Long-Lived Assets Property, plant and equipment and other identified intangibles (primarily customer relationships, patents and acquired technologies, trademarks, licenses and non-compete agreements) are recorded at cost, net of accumulated depreciation and impairment, and, except for goodwill and certain trademarks, are depreciated or amortized on a straight-line basis over their estimated useful lives. Changes in circumstances such as technological advances, changes to the Company’s business model or changes in the Company’s capital strategy can result in the actual useful lives differing from the Company’s estimates. If the Company determines that the useful life of its property, plant and equipment or its identified intangible assets should be changed, the Company would depreciate or amortize the net book value in excess of the salvage value over its revised remaining useful life, thereby increasing or decreasing depreciation or amortization expense. Long-lived assets, including property, plant and equipment and other intangibles, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Such impairment tests are based on a comparison of undiscounted cash flows to the recorded value of the asset. The estimate of cash flow is based upon, among other things, assumptions about expected future operating performance. The Company’s estimates of undiscounted cash flow may differ from actual cash flow due to, among other things, technological changes, economic conditions, changes to its business model or changes in its operating performance. If the sum of the undiscounted cash flows (excluding interest) is less than the carrying value, the Company recognizes an impairment loss, measured as the amount by which the carrying value exceeds the fair value of the asset.
Goodwill	Goodwill Under FASB ASC 350, the Company assesses recoverability of goodwill on an annual basis or when events or changes in circumstances indicate that the carrying amount of goodwill may not be recoverable. An impairment charge will be recognized to the extent that the implied fair value of a reporting unit is less than its carrying value. Factors that could potentially trigger an impairment review include (but are not limited to): • significant underperformance of a reporting unit relative to expected, historical or forecasted operating results; • significant negative industry or economic trends; • significant changes in the strategy for a segment including extended slowdowns in the reporting unit’s market; • a decrease in market capitalization below the Company’s book value; and • a significant change in regulations. Whether during the annual impairment assessment or during a trigger-based impairment review, the Company determines the fair value of its reporting units and compares such fair value to the carrying value of those reporting units to determine if there are any indications of goodwill impairment. Fair value of reporting units is determined using a combination of two valuation methods: a market approach and an income approach with each method given equal weight in determining the fair value assigned to each reporting unit. Absent an indication of fair value from a potential buyer or similar specific transaction, the Company believes the use of these two methods provides a reasonable estimate of a reporting unit’s fair value. Assumptions common to both methods are operating plans and economic outlooks, which are used to forecast future revenues, earnings and after-tax cash flows for each reporting unit. These assumptions are applied consistently for both methods. The market approach estimates fair value by first determining earnings before interest, taxes, depreciation and amortization (“EBITDA”) multiples for comparable publicly-traded companies with similar characteristics of the reporting unit. The EBITDA multiples for comparable companies are based upon current enterprise value. The enterprise value is based upon current market capitalization and includes a control premium. The Company believes this approach is appropriate because it provides a fair value estimate using multiples from entities with operations and economic characteristics comparable to its reporting units. The income approach is based on forecasted future (debt-free) cash flows that are discounted to present value using factors that consider timing and risk of future cash flows. The Company believes this approach is appropriate because it provides a fair value estimate based upon the reporting unit’s expected long-term operating cash flow performance. Discounted cash flow projections are based on financial forecasts developed from operating plans and economic outlooks, growth rates, estimates of future expected changes in operating margins, terminal value growth rates, future capital expenditures and changes in working capital requirements. Estimates of discounted cash flows may differ from actual cash flows due to, among other things, changes in economic conditions, changes to business models, changes in the Company’s weighted average cost of capital, or changes in operating performance. The discount rate applied to the estimated future cash flows is one of the most significant assumptions utilized under the income approach. The Company determines the appropriate discount rate for each of its reporting units based on the weighted average cost of capital (“WACC”) for each individual reporting unit. The WACC takes into account both the pre-tax cost of debt and cost of equity (a major component of the cost of equity is the current risk-free rate on twenty year U.S. Treasury bonds). As each reporting unit has a different risk profile based on the nature of its operations, including market-based factors, the WACC for each reporting unit may differ. Accordingly, the WACCs are adjusted, as appropriate, to account for company-specific risks associated with each reporting unit.
Investments in Affiliated Companies	Investments in Affiliated Companies Investments in entities in which the Company does not have control or is not the primary beneficiary of a variable interest entity, and for which the Company has 20% to 50% ownership or has the ability to exert significant influence, have historically been accounted for by the equity method. At March 31, 2016 and December 31, 2015 , the Company did not own any investments in affiliated companies.
Investments in Variable Interest Entities	Investments in Variable Interest Entities The Company evaluates all transactions and relationships with variable interest entities (“VIE”) to determine whether the Company is the primary beneficiary of the entities in accordance with FASB ASC 810, Consolidation. The Company’s overall methodology for evaluating transactions and relationships under the VIE requirements includes the following two steps: • determine whether the entity meets the criteria to qualify as a VIE; and • determine whether the Company is the primary beneficiary of the VIE. In performing the first step, the significant factors and judgments that the Company considers in making the determination as to whether an entity is a VIE include: • the design of the entity, including the nature of its risks and the purpose for which the entity was created, to determine the variability that the entity was designed to create and distribute to its interest holders; • the nature of the Company’s involvement with the entity; • whether control of the entity may be achieved through arrangements that do not involve voting equity; • whether there is sufficient equity investment at risk to finance the activities of the entity; and • whether parties other than the equity holders have the obligation to absorb expected losses or the right to receive residual returns. If the Company identifies a VIE based on the above considerations, it then performs the second step and evaluates whether it is the primary beneficiary of the VIE by considering the following significant factors and judgments: • whether the entity has the power to direct the activities of a variable interest entity that most significantly impact the entity’s economic performance; and • whether the entity has the obligation to absorb losses of the entity that could potentially be significant to the variable interest entity or the right to receive benefits from the entity that could potentially be significant to the variable interest entity.
Newly Issued Accounting Pronouncements	Newly Issued Accounting Pronouncements In March 2016, the FASB issued guidance that simplifies several aspects of the accounting for share-based payment awards to employees, including the accounting for income taxes, classification of awards as either equity or liabilities and classification in the statement of cash flows. The standard is effective for public companies for annual periods beginning after December 15, 2016, including interim periods within those fiscal years. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations. In February 2016, the FASB issued guidance that requires lessees to present right-of-use assets and lease liabilities on the balance sheet. The standard is effective for public companies for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations. In November 2015, the FASB issued guidance that requires all deferred tax assets and liabilities, along with any related valuation allowance, to be presented as non-current within the Consolidated Balance Sheet. It is effective for annual reporting periods beginning after December 15, 2016, but early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its presentation of financial condition. In September 2015, the FASB issued guidance that requires acquirers in a business combination to recognize measurement period adjustments in the reporting period in which the adjustment amounts are determined. This is a change from the previous requirement that the adjustments be recorded retrospectively. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations. In August 2014, the FASB issued guidance that requires management to assess the Company’s ability to continue as a going concern and to provide related disclosures in certain circumstances. The standard is effective for public companies for annual periods beginning after December 15, 2016 and early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company’s presentation of its consolidated financial statements. In May 2014, the FASB issued guidance that supersedes revenue recognition requirements regarding contracts with customers to transfer goods or services or for the transfer of non-financial assets. Under the new guidance, entities are required to recognize revenue in order to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides a five-step analysis to be performed on transactions to determine when and how revenue is recognized. This new guidance is effective retroactively in fiscal years beginning after December 15, 2017. The Company is currently evaluating the effect the guidance will have on its financial condition and results of operations.

General (Tables)

General (Tables)	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business acquisition, pro forma information	Underground Solutions and Schultz made the following contribution to the Company’s revenues and profits (in thousands): Quarter Ended March 31, 2016 Quarter Ended March 31, 2015 Underground Solutions (1) Schultz Schultz Revenues $ 4,666 $ 4,710 $ 517 Net loss (124 ) (341 ) (7 ) _____________________ (1) The reported net loss for the period includes inventory step up expense of $1.2 million recognized as part of the accounting for business combinations. The following unaudited pro forma summary presents combined information of the Company as if the Underground Solutions and Schultz acquisitions had occurred at the beginning of the year preceding their acquisition (in thousands): Quarters Ended March 31, 2016 2015 Revenues $ 297,532 $ 314,753 Net income (1) (3,850 ) 569 _____________________ (1) Includes pro-forma adjustments for depreciation and amortization associated with acquired tangible and intangible assets, as if those assets were recorded at the beginning of the year preceding the acquisition date.
Schedule of fair value of assets acquired and liabilities assumed	The following table summarizes the fair value of identified assets and liabilities of the Underground Solutions and Schultz acquisitions at their respective acquisition dates (in thousands): Underground Solutions Schultz Cash $ 3,630 $ — Receivables and cost and estimated earnings in excess of billings 6,373 1,086 Inventories 12,839 — Prepaid expenses and other current assets 777 19 Property, plant and equipment 2,755 162 Identified intangible assets 34,400 3,060 Deferred income tax assets 12,212 — Other assets 29 — Accounts payable (4,653 ) (663 ) Accrued expenses (5,011 ) — Billings in excess of cost and estimated earnings (2,943 ) — Deferred income tax liabilities (15,232 ) — Total identifiable net assets $ 45,176 $ 3,664 Total consideration recorded $ 88,797 $ 7,662 Less: total identifiable net assets 45,176 3,664 Goodwill at March 31, 2016 $ 43,621 $ 3,998

Accounting Policies (Tables)

Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Financial data for consolidated variable interest entities	Financial data for consolidated variable interest entities are summarized in the following table (in thousands): Balance sheet data March 31, (1) December 31, (2) Current assets $ 39,951 $ 60,730 Non-current assets 25,791 26,316 Current liabilities 18,203 24,784 Non-current liabilities 25,258 25,728 __________________________ (1) Amounts exclude the assets and liabilities of BPPC, which was sold in February 2016. (2) Amounts include $21.1 million of current assets and $7.0 million of current liabilities classified as held for sale. See Note 5. Quarters Ended March 31, Income statement data 2016 (1) 2015 Revenue $ 14,736 $ 18,240 Gross profit 639 2,206 Net income (loss) (2,940 ) 130 __________________________ (1) Includes the results of BPPC through the date of its sale in February 2016.

Restructuring (Tables)

Restructuring (Tables)	3 Months Ended
	Mar. 31, 2016
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs	The following tables summarize all charges related to the 2014 Restructuring recognized in the quarters ended March 31, 2016 and 2015 as presented in their affected line in the Consolidated Statements of Operations (in thousands): Quarters Ended March 31, 2016 2015 Other Cash Restructuring Charges (Reversals) (1) Total Other Cash (1) Total Cost of revenues $ — $ (14 ) $ (14 ) $ (166 ) $ 180 $ 14 Operating expenses (341 ) (21 ) (362 ) (1,021 ) 1,153 132 Restructuring charges — 67 67 — 658 658 Other expense (2) 129 — 129 2,692 42 2,734 Total pre-tax restructuring charges (reversals) (3) $ (212 ) $ 32 $ (180 ) $ 1,505 $ 2,033 $ 3,538 __________________________ (1) Cash charges consist of charges incurred during the period that will be settled in cash, either during the current period or future periods. (2) Charges in the quarter ended March 31, 2015 primarily include the loss on sale of the CIPP contracting operation in France in February 2015, including the release of cumulative currency translation adjustments. (3) All charges relate to Infrastructure Solutions. The following tables summarize all charges related to the 2016 Restructuring recognized in the quarter ended March 31, 2016 as presented in their affected line in the Consolidated Statements of Operations (in thousands): Quarter Ended March 31, 2016 Cost of revenues $ 49 Operating expenses 2,963 Restructuring charges 6,730 Total pre-tax restructuring charges (1) $ 9,742 __________________________ (1) All charges incurred during the period will be settled in cash, either during the current period or future periods. During the quarter ended March 31, 2016, the Company recorded pre-tax expense related to the 2016 Restructuring as follows (in thousands): Quarter Ended March 31, 2016 Infrastructure Solutions Corrosion Protection Energy Services Total Severance and benefit related costs $ 1,912 $ 2,420 $ 1,309 $ 5,641 Lease termination costs — — 969 969 Relocation and other moving costs — — 120 120 Other restructuring costs (1) 241 317 2,454 3,012 Total pre-tax restructuring charges (2) $ 2,153 $ 2,737 $ 4,852 $ 9,742 __________________________ (1) Primarily includes charges related to the downsizing of the Company's upstream operations in California. (2) Includes $1.0 million of corporate-related restructuring charges that have been allocated to the reportable segments. During the quarters ended March 31, 2016 and 2015, the Company recorded pre-tax (income) expense related to the 2014 Restructuring as follows (in thousands): Quarters Ended March 31, 2016 2015 Severance and benefit related costs $ 67 $ 516 Lease termination costs — 141 Allowances for doubtful accounts (341 ) (999 ) Other restructuring costs (1) 94 3,880 Total pre-tax restructuring charges (reversals) (2) $ (180 ) $ 3,538 __________________________ (1) For the quarter ended March 31, 2015, includes charges related to the write-off of certain other assets, including the loss on the sale of the CIPP contracting operation in France in February 2015, including the release of cumulative currency translation adjustments, professional fees and certain other restructuring charges. (2) All charges for the quarters ended March 31, 2016 and 2015 relate to Infrastructure Solutions.
Schedule of Restructuring Reserve by Type of Cost	The following tables summarize the 2016 Restructuring activity during the first quarter of 2016 (in thousands): 2016 Utilized in 2016 Reserves at Cash (1) Non-Cash Severance and benefit related costs $ 5,641 $ 3,062 $ — $ 2,579 Lease termination costs 969 583 — 386 Relocation and other moving costs 120 120 — — Other restructuring costs 3,012 2,906 — 106 Total pre-tax restructuring charges $ 9,742 $ 6,671 $ — $ 3,071 __________________________ (1) Refers to cash utilized to settle charges during the first quarter of 2016. The following tables summarize the 2014 Restructuring activity during the first quarters of 2016 and 2015 (in thousands): Utilized Reserves at December 31, 2015 Charge (Credit) to Income Foreign Currency Translation Cash (1) Non-Cash Reserves at March 31, 2016 Severance and benefit related costs $ — $ 67 $ — $ — $ — $ 67 Lease termination expenses — — — — — — Allowances for doubtful accounts 6,605 (341 ) 49 — 235 6,078 Other restructuring costs 968 94 33 45 129 921 Total pre-tax restructuring charges (reversals) $ 7,573 $ (180 ) $ 82 $ 45 $ 364 $ 7,066 __________________________ (1) Refers to cash utilized to settle charges, either those reserved at December 31, 2015 or charged to income during the first quarter of 2016. Utilized Reserves at December 31, 2014 Charge Foreign Currency Translation Cash (1) Non-Cash Reserves at March 31, 2015 Severance and benefit related costs $ 466 $ 516 $ (2 ) $ 82 $ — $ 898 Lease termination expenses — 141 — 141 — — Allowances for doubtful accounts 11,464 (999 ) (1 ) — (124 ) 10,588 Other restructuring costs 2,496 3,880 (102 ) 1,297 2,572 2,405 Total pre-tax restructuring charges $ 14,426 $ 3,538 $ (105 ) $ 1,520 $ 2,448 $ 13,891 __________________________ (1) Refers to cash utilized to settle charges, either those reserved at December 31, 2014 or charged to income during the first quarter of 2015.

Share Information (Tables)

Share Information (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares	Earnings per share have been calculated using the following share information: Quarters Ended March 31, 2016 2015 Weighted average number of common shares used for basic EPS 35,488,580 37,309,829 Effect of dilutive stock options and restricted and deferred stock unit awards — 231,720 Weighted average number of common shares and dilutive potential common stock used in dilutive EPS 35,488,580 37,541,549

Assets Held For Sale (Tables)

Assets Held For Sale (Tables)	3 Months Ended
	Mar. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Summary of Components of Assets and Liabilities Held-for-sale	The following table provides the components of assets and liabilities held for sale (in thousands): December 31, 2015 Assets held for sale: Total current assets $ 8,559 Property, plant & equipment, less accumulated depreciation 12,501 Total assets held for sale $ 21,060 Liabilities held for sale: Total current liabilities $ 944 Debt 1,924 Deferred income tax liabilities 1,473 Other liabilities 2,620 Total liabilities held for sale $ 6,961 Non-controlling interests $ 7,142

Goodwill and Identified Intan27

Goodwill and Identified Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill The following table presents a reconciliation of the beginning and ending balances of the Company’s goodwill at January 1, 2016 and March 31, 2016 (in thousands): Infrastructure Corrosion Energy Total Balance, January 1, 2016 Goodwill, gross $ 190,525 $ 73,345 $ 80,246 $ 344,116 Accumulated impairment losses (16,069 ) (45,400 ) (33,527 ) (94,996 ) Goodwill, net 174,456 27,945 46,719 249,120 Acquisitions (1) 43,621 — — 43,621 Foreign currency translation 1,138 600 — 1,738 Balance, March 31, 2016 Goodwill, gross 235,284 73,945 80,246 389,475 Accumulated impairment losses (16,069 ) (45,400 ) (33,527 ) (94,996 ) Goodwill, net $ 219,215 $ 28,545 $ 46,719 $ 294,479 __________________________ (1) During the first quarter of 2016, the Company recorded goodwill of $43.6 million related to the acquisition of Underground Solutions (see Note 1).
Schedule of Identified Intangible Assets	Identified Intangible Assets Identified intangible assets consisted of the following (in thousands): (in thousands) March 31, 2016 December 31, 2015 Weighted Average Useful Lives (Years) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount License agreements 4.1 $ 3,898 $ (3,320 ) $ 578 $ 3,893 $ (3,275 ) $ 618 Leases 11.3 2,065 (801 ) 1,264 2,065 (764 ) 1,301 Trademarks (1) 15.0 24,079 (6,649 ) 17,430 22,519 (6,262 ) 16,257 Non-competes 2.2 1,210 (972 ) 238 1,210 (945 ) 265 Customer relationships (1) 12.5 185,222 (44,779 ) 140,443 164,779 (41,967 ) 122,812 Patents and acquired technology (1) 13.7 68,492 (22,947 ) 45,545 55,260 (22,395 ) 32,865 $ 284,966 $ (79,468 ) $ 205,498 $ 249,726 $ (75,608 ) $ 174,118 __________________________ (1) During the first quarter of 2016, the Company recorded trademarks, customer relationships and acquired technology of $20.2 million , $1.5 million and $12.8 million , respectively, related to the acquisition of Underground Solutions (see Note 1).
Schedule of Estimated Amortization Expense	Estimated amortization expense by year is as follows (in thousands): 2016 $ 16,544 2017 17,040 2018 16,937 2019 16,749 2020 16,715

Long-Term Debt and Credit Fac28

Long-Term Debt and Credit Facility (Tables)	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt, term note and notes payable consisted of the following (in thousands): March 31, December 31, Term note, due October 30, 2020, annualized rates of 2.63% and 2.61%, respectively $ 341,250 $ 345,625 Line of credit, 2.44% 34,000 — Other notes with interest rates from 3.3% to 6.5% 9,852 9,797 Subtotal 385,102 355,422 Less – Current maturities and notes payable 17,649 17,648 Less – Unamortized loan costs 4,072 4,294 Total $ 363,381 $ 333,480

Stockholders' Equity and Equi29

Stockholders' Equity and Equity Compensation (Tables)	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Summary of all stock award activity	A summary of the stock award activity is as follows: Quarter Ended March 31, 2016 Stock Awards Weighted Average Award Date Fair Value Outstanding at January 1, 2016 1,275,707 $ 19.60 Restricted shares awarded — — Restricted stock units awarded 274,058 18.20 Performance stock units awarded 234,776 18.24 Restricted shares distributed (143,993 ) 23.65 Restricted stock units distributed (9,733 ) 21.58 Performance stock units distributed — — Restricted shares forfeited (14,528 ) 23.40 Restricted stock units forfeited (45,340 ) 17.33 Performance stock units forfeited (41,484 ) 18.68 Outstanding at March 31, 2016 1,529,463 $ 18.80
Summary of all deferred stock unit activity	A summary of deferred stock unit activity is as follows: Quarter Ended March 31, 2016 Deferred Stock Units Weighted Average Award Date Fair Value Outstanding at January 1, 2016 247,219 $ 19.92 Awarded 1,062 19.07 Distributed — — Outstanding at March 31, 2016 248,281 $ 19.91
Summary of stock option activity	A summary of stock option activity is as follows: Quarter Ended March 31, 2016 Shares Weighted Average Exercise Price Outstanding at January 1, 2016 288,383 $ 21.78 Granted — — Exercised (18,193 ) 16.80 Canceled/Expired — — Outstanding at March 31, 2016 270,190 $ 22.06 Exercisable at March 31, 2016 270,190 $ 22.06
Financial data for stock option exercises	Financial data for stock option exercises are summarized as follows (in thousands): Quarters Ended March 31, 2016 2015 Amount collected from stock option exercises $ 306 $ 1,299 Total intrinsic value of stock option exercises 352 273 Tax shortfall of stock option exercises recorded in additional paid-in-capital 18 100 Aggregate intrinsic value of outstanding stock options 320 543 Aggregate intrinsic value of exercisable stock options 320 543

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Financial Information by Segment	Financial information by segment was as follows (in thousands): Quarters Ended March 31, 2016 (1) 2015 (2) Revenues: Infrastructure Solutions $ 125,762 $ 122,473 Corrosion Protection 92,446 101,743 Energy Services 75,700 84,950 Total revenues $ 293,908 $ 309,166 Gross profit: Infrastructure Solutions $ 29,744 $ 28,615 Corrosion Protection 17,199 20,829 Energy Services 7,471 9,746 Total gross profit $ 54,414 $ 59,190 Operating income (loss): Infrastructure Solutions (3) $ 5,808 $ 7,332 Corrosion Protection (4) (5,670 ) 500 Energy Services (5) (4,277 ) 1,293 Total operating income (loss) $ (4,139 ) $ 9,125 _______________________ (1) Results include: (i) $9.7 million of 2016 Restructuring charges (see Note 3), (ii) $0.2 million of 2014 Restructuring expense reversals (see Note 3); (iii) $1.0 million of costs incurred related to the acquisition of Underground Solutions and other acquisition targets; and (iv) inventory step up expense of $1.2 million recognized as part of the accounting for business combinations (see Note 1). (2) Results include: (i) $0.8 million of 2014 Restructuring charges (see Note 3); and (ii) $0.3 million of costs incurred related to the acquisition of Schultz and other acquisition targets. (3) Operating income for the quarter ended March 31, 2016 includes: (i) $2.2 million of 2016 Restructuring charges (see Note 3), (ii) $0.2 million of 2014 Restructuring expense reversals (see Note 3); (iii) $1.0 million of costs incurred related to the acquisitions of Underground Solutions and other acquisition targets; and (iv) inventory step up expense of $1.2 million recognized as part of the accounting for business combinations (see Note 1). Operating income for the quarter ended March 31, 2015 includes $0.8 million of 2014 Restructuring charges (see Note 3). (4) Operating loss for the quarter ended March 31, 2016 includes: (i) $2.7 million of 2016 Restructuring charges (see Note 3). (5) Operating loss for the quarter ended March 31, 2016 includes: (i) $4.9 million of 2016 Restructuring charges (see Note 3). Operating income for the quarter ended March 31, 2015 includes $0.3 million of costs incurred related to the acquisition of Schultz and other acquisition targets.
Summary of Revenues, Gross Profit, and Operating Income by Geographic Region	The following table summarizes revenues, gross profit and operating income by geographic region (in thousands): Quarters Ended March 31, 2016 2015 Revenues (1) : United States $ 223,569 $ 223,141 Canada 27,619 46,651 Europe 13,821 14,118 Other foreign 28,899 25,256 Total revenues $ 293,908 $ 309,166 Gross profit: United States $ 39,862 $ 37,854 Canada 5,414 12,188 Europe 2,789 4,225 Other foreign 6,349 4,923 Total gross profit $ 54,414 $ 59,190 Operating income (loss): United States $ (7,552 ) $ (2,913 ) Canada 1,569 8,599 Europe 159 1,471 Other foreign 1,685 1,968 Total operating income (loss) $ (4,139 ) $ 9,125 __________________________ (1) Revenues are attributed to the country of origin for the Company’s legal entities. For a significant majority of its legal entities, the country of origin relates to the country or geographic area that it services.

Derivative Financial Instrume31

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of fair value amounts of derivative instruments	The following table provides a summary of the fair value amounts of our derivative instruments, all of which are Level 2 inputs as defined below (in thousands): Designation of Derivatives Balance Sheet Location March 31, December 31, Derivatives Designated as Hedging Instruments: Forward Currency Contracts Prepaid expenses and other current assets $ — $ 18 Total Assets $ — $ 18 Forward Currency Contracts Accrued expenses $ 1,148 $ 243 Interest Rate Swaps Other non-current liabilities 5,055 13 Total Liabilities $ 6,203 $ 256 Derivatives Not Designated as Hedging Instruments: Forward Currency Contracts Prepaid expenses and other current assets $ — $ 91 Total Assets $ — $ 91 Forward Currency Contracts Accrued expenses $ 151 $ — Total Liabilities $ 151 $ — Total Derivative Assets $ — $ 109 Total Derivative Liabilities 6,354 256 Total Net Derivative Liability $ (6,354 ) $ (147 )
Schedule of assets and liabilities measured at fair value on a recurring basis	The following table represents assets and liabilities measured at fair value on a recurring basis and the basis for that measurement at March 31, 2016 and December 31, 2015 (in thousands): Total Fair Value at Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Forward Currency Contracts $ — $ — $ — $ — Total $ — $ — $ — $ — Liabilities: Forward Currency Contracts $ 1,299 $ — $ 1,299 $ — Interest Rate Swap 5,055 — 5,055 — Total $ 6,354 $ — $ 6,354 $ — Total Fair Value at Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Forward Currency Contracts $ 109 $ — $ 109 $ — Total $ 109 $ — $ 109 $ — Liabilities: Forward Currency Contracts $ 243 $ — $ 243 $ — Interest Rate Swap 13 — 13 — Total $ 256 $ — $ 256 $ —
Summary of derivative positions	The following table summarizes the Company’s derivative positions at March 31, 2016 : Position Notional Amount Weighted Average Remaining Maturity In Years Average Exchange Rate Canadian Dollar/USD Sell $ 3,704,127 0.2 1.30 USD/British Pound Sell £ 4,595,000 0.2 1.44 EURO/British Pound Sell £ 8,000,000 0.2 0.79 Interest Rate Swap $ 255,937,500 4.6

General - Additional Informatio

General - Additional Information (Details) - USD ($) $ in Thousands	Feb. 18, 2016	Feb. 01, 2016	Mar. 01, 2015	Feb. 28, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
General [Line Items]
Sale of interest in Bayou Perma-Pipe Canada, Ltd., net of cash disposed					$ 4,599	$ 0
Schultz Mechanical Contractors, Inc.
General [Line Items]
Total consideration recorded			$ 7,700		7,662
Cash payments to acquire business			6,700
Purchase price			7,100
Working capital adjustment			(400)
Adjustment to account for deferred consideration			$ 1,000
Contingent consideration paid					500
Underground Solutions
General [Line Items]
Total consideration recorded					88,797
Cash payments to acquire business	$ 85,000
Discounted value of net operating loss tax assets	5,300
Consideration transferred, funds held in escrow	6,300
Foreign earnings repatriated	30,400
Foreign earnings repatriated, tax impact	$ 3,500
Working capital adjustment					$ (1,500)
Video Injection - Instituform SAS
General [Line Items]
Loss on disposition of business				$ 2,900
Bayou Perma-Pipe Canada, Ltd
General [Line Items]
Ownership interest		51.00%
Consideration received		$ 9,600
Proceeds from divestiture		7,600
Disposal, note receivable		$ 2,000
Expected loss from disposal, before tax							$ 600

General - Contributions to Reve

General - Contributions to Revenues and Profits Since Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Underground Solutions
Business Acquisition [Line Items]
Revenues	$ 4,666
Net loss	(124)
Inventory step up expense	1,200
Schultz Mechanical Contractors, Inc.
Business Acquisition [Line Items]
Revenues	4,710	$ 517
Net loss	$ (341)	$ (7)

General - Pro Forma Information

General - Pro Forma Information (Details) - Underground Solutions and Schultz - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Business Acquisition [Line Items]
Revenues	$ 297,532	$ 314,753
Net income	$ (3,850)	$ 569

General - Fair Value of Identif

General - Fair Value of Identified Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 01, 2015	Mar. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill at March 31, 2016		$ 294,479	$ 249,120
Underground Solutions
Business Acquisition [Line Items]
Cash		3,630
Receivables and cost and estimated earnings in excess of billings		6,373
Inventories		12,839
Prepaid expenses and other current assets		777
Property, plant and equipment		2,755
Identified intangible assets		34,400
Deferred income tax assets		12,212
Other assets		29
Accounts payable		(4,653)
Accrued expenses		(5,011)
Billings in excess of cost and estimated earnings		(2,943)
Deferred income tax liabilities		(15,232)
Total identifiable net assets		45,176
Total consideration recorded		88,797
Less: total identifiable net assets		45,176
Goodwill at March 31, 2016		43,621
Schultz Mechanical Contractors, Inc.
Business Acquisition [Line Items]
Cash		0
Receivables and cost and estimated earnings in excess of billings		1,086
Inventories		0
Prepaid expenses and other current assets		19
Property, plant and equipment		162
Identified intangible assets		3,060
Deferred income tax assets		0
Other assets		0
Accounts payable		(663)
Accrued expenses		0
Billings in excess of cost and estimated earnings		0
Deferred income tax liabilities		0
Total identifiable net assets		3,664
Total consideration recorded	$ 7,700	7,662
Less: total identifiable net assets		3,664
Goodwill at March 31, 2016		$ 3,998

Accounting Policies - Additiona

Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accounting Policies [Abstract]
Net foreign exchange transaction gains (loss)	$ (1,131)	$ (216)
Accumulated income (loss) related to currency translation adjustments	(58,100)	(38,800)
Accumulated income (loss) related to derivative transactions	(6,200)	0
Accumulated income (loss) related to pension activity	$ 500	$ (500)

Accounting Policies - VIE Balan

Accounting Policies - VIE Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Current assets	$ 39,951	$ 60,730
Non-current assets	25,791	26,316
Current liabilities	18,203	24,784
Non-current liabilities	$ 25,258	25,728
Held-for-sale
Schedule of Equity Method Investments [Line Items]
Assets held for sale		21,060
Liabilities held for sale		$ 6,961

Accounting Policies - VIE Incom

Accounting Policies - VIE Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accounting Policies [Abstract]
Revenue	$ 14,736	$ 18,240
Gross profit	639	2,206
Net income (loss)	$ (2,940)	$ 130

Restructuring - Additional Info

Restructuring - Additional Information (Details) $ in Thousands	3 Months Ended		18 Months Ended
	Mar. 31, 2016USD ($)position	Mar. 31, 2015USD ($)	Mar. 31, 2016USD ($)	Jan. 04, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6,797	$ 658
Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Impact on earnings	$ 15,000
Expected number of positions eliminated | position	900
Number of positions eliminated, percent	14.50%
Number of terminations during period | position	705
Utilized - Non-Cash	$ 0
Utilized - Cash	6,671
Restructuring charges	9,742
Restructuring charges, net of tax	6,600
Restructuring Plan 2016 | Corrosion Protection
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,737
Restructuring Plan 2016 | Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,153
Restructuring Plan 2016 | Minimum
Restructuring Cost and Reserve [Line Items]
Impact on earnings	15,000
Estimated remaining restructuring costs to be incurred	11,000		$ 11,000	$ 7,000
Restructuring Plan 2016 | Maximum
Restructuring Cost and Reserve [Line Items]
Impact on earnings	16,000
Estimated remaining restructuring costs to be incurred	$ 13,000		13,000	$ 9,000
Restructuring Plan 2014
Restructuring Cost and Reserve [Line Items]
Number of terminations during period | position	86
Utilized - Non-Cash	$ 364	2,448	48,300
Utilized - Cash	45	1,520	12,000
Restructuring charges	(200)	800
Estimated annual savings			10,800
Pre-tax charges (reversals) related to restructuring	(180)	3,538	60,300
Restructuring costs, after tax results			44,800
Restructuring Plan 2014 | Corrosion Protection
Restructuring Cost and Reserve [Line Items]
Estimated annual savings			2,400
Total pre-tax restructuring charges to date	22,200		22,200
Restructuring Plan 2014 | Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(200)	800
Estimated annual savings			8,400
Total pre-tax restructuring charges to date	26,100		$ 26,100
Employee Severance and Lease Termination | Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6,700
Employee Severance and Lease Termination | Restructuring Plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100	$ 700

Restructuring - Restructuring C

Restructuring - Restructuring Costs by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	$ 6,797	$ 658
Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	9,742
Restructuring Plan 2016 | Severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	5,641
Restructuring Plan 2016 | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	969
Restructuring Plan 2016 | Relocation and other moving costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	120
Restructuring Plan 2016 | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	3,012
Restructuring Plan 2016 | Corporate
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	1,000
Restructuring Plan 2016 | Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	2,153
Restructuring Plan 2016 | Infrastructure Solutions | Severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	1,912
Restructuring Plan 2016 | Infrastructure Solutions | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	0
Restructuring Plan 2016 | Infrastructure Solutions | Relocation and other moving costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	0
Restructuring Plan 2016 | Infrastructure Solutions | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	241
Restructuring Plan 2016 | Corrosion Protection
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	2,737
Restructuring Plan 2016 | Corrosion Protection | Severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	2,420
Restructuring Plan 2016 | Corrosion Protection | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	0
Restructuring Plan 2016 | Corrosion Protection | Relocation and other moving costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	0
Restructuring Plan 2016 | Corrosion Protection | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	317
Restructuring Plan 2016 | Energy Services
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	4,852
Restructuring Plan 2016 | Energy Services | Severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	1,309
Restructuring Plan 2016 | Energy Services | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	969
Restructuring Plan 2016 | Energy Services | Relocation and other moving costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	120
Restructuring Plan 2016 | Energy Services | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	$ 2,454

Restructuring - Restructuring R

Restructuring - Restructuring Reserve by Type of Cost (Details) - USD ($) $ in Thousands	3 Months Ended		18 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6,797	$ 658
Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9,742
Restructuring Plan 2016 | Cost of revenues
Restructuring Cost and Reserve [Line Items]
Restructuring charges	49
Restructuring Plan 2016 | Operating expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,963
Restructuring Plan 2016 | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6,730
Restructuring Plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(200)	800
Other Non-Cash Restructuring Charges (Reversals)	(212)	1,505
Cash Restructuring Charges (Reversals)	32	2,033
Pre-tax charges (reversals) related to restructuring	(180)	3,538	$ 60,300
Restructuring Plan 2014 | Cost of revenues
Restructuring Cost and Reserve [Line Items]
Other Non-Cash Restructuring Charges (Reversals)	0	(166)
Cash Restructuring Charges (Reversals)	(14)	180
Pre-tax charges (reversals) related to restructuring	(14)	14
Restructuring Plan 2014 | Operating expenses
Restructuring Cost and Reserve [Line Items]
Other Non-Cash Restructuring Charges (Reversals)	(341)	(1,021)
Cash Restructuring Charges (Reversals)	(21)	1,153
Pre-tax charges (reversals) related to restructuring	(362)	132
Restructuring Plan 2014 | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Other Non-Cash Restructuring Charges (Reversals)	0	0
Cash Restructuring Charges (Reversals)	67	658
Pre-tax charges (reversals) related to restructuring	67	658
Restructuring Plan 2014 | Other expense
Restructuring Cost and Reserve [Line Items]
Other Non-Cash Restructuring Charges (Reversals)	129	2,692
Cash Restructuring Charges (Reversals)	0	42
Pre-tax charges (reversals) related to restructuring	$ 129	$ 2,734

Restructuring - Restructuring P

Restructuring - Restructuring Plan Activity (Details) - USD ($) $ in Thousands	3 Months Ended		18 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6,797	$ 658
Restructuring Plan 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9,742
Restructuring Reserve [Roll Forward]
Utilized - Cash	6,671
Utilized - Non-Cash	0
Ending balance	3,071		$ 3,071
Restructuring Plan 2016 | Severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5,641
Restructuring Reserve [Roll Forward]
Utilized - Cash	3,062
Utilized - Non-Cash	0
Ending balance	2,579		2,579
Restructuring Plan 2016 | Lease termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	969
Restructuring Reserve [Roll Forward]
Utilized - Cash	583
Utilized - Non-Cash	0
Ending balance	386		386
Restructuring Plan 2016 | Relocation and other moving costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	120
Restructuring Reserve [Roll Forward]
Utilized - Cash	120
Utilized - Non-Cash	0
Ending balance	0		0
Restructuring Plan 2016 | Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,012
Restructuring Reserve [Roll Forward]
Utilized - Cash	2,906
Utilized - Non-Cash	0
Ending balance	106		106
Restructuring Plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(200)	800
Restructuring Reserve [Roll Forward]
Beginning balance	7,573	14,426
Charge (Credit) to Income	(180)	3,538	60,300
Foreign Currency Translation	82	(105)
Utilized - Cash	45	1,520	12,000
Utilized - Non-Cash	364	2,448	48,300
Ending balance	7,066	13,891	7,066
Restructuring Plan 2014 | Severance and benefit costs
Restructuring Reserve [Roll Forward]
Beginning balance	0	466
Charge (Credit) to Income	67	516
Foreign Currency Translation	0	(2)
Utilized - Cash	0	82
Utilized - Non-Cash	0	0
Ending balance	67	898	67
Restructuring Plan 2014 | Lease termination costs
Restructuring Reserve [Roll Forward]
Beginning balance	0	0
Charge (Credit) to Income	0	141
Foreign Currency Translation	0	0
Utilized - Cash	0	141
Utilized - Non-Cash	0	0
Ending balance	0	0	0
Restructuring Plan 2014 | Allowance for doubtful accounts
Restructuring Reserve [Roll Forward]
Beginning balance	6,605	11,464
Charge (Credit) to Income	(341)	(999)
Foreign Currency Translation	49	(1)
Utilized - Cash	0	0
Utilized - Non-Cash	235	(124)
Ending balance	6,078	10,588	6,078
Restructuring Plan 2014 | Other restructuring costs
Restructuring Reserve [Roll Forward]
Beginning balance	968	2,496
Charge (Credit) to Income	94	3,880
Foreign Currency Translation	33	(102)
Utilized - Cash	45	1,297
Utilized - Non-Cash	129	2,572
Ending balance	$ 921	$ 2,405	$ 921

Share Information - Additional

Share Information - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from calculation of earnings per share (in shares)	391,885
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from calculation of earnings per share (in shares)	164,014	270,061

Share Information - Earnings Pe

Share Information - Earnings Per Share Calculation, Share Information (Details) - shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Weighted average number of common shares used for basic EPS (in shares)	35,488,580	37,309,829
Effect of dilutive stock options and restricted and deferred stock unit awards (in shares)	0	231,720
Weighted average number of common shares and dilutive potential common stock used in dilutive EPS (in shares)	35,488,580	37,541,549

Assets Held For Sale - Addition

Assets Held For Sale - Additional Information (Details)	Dec. 31, 2015
Bayou Perma-Pipe Canada, Ltd | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage	51.00%

Assets Held For Sale - Componen

Assets Held For Sale - Components of Assets and Liabilities Held-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets held for sale:
Total current assets	$ 0	$ 21,060
Liabilities held for sale:
Total current liabilities	$ 0	6,961
Held-for-sale
Assets held for sale:
Total current assets		8,559
Property, plant & equipment, less accumulated depreciation		12,501
Total assets held for sale		21,060
Liabilities held for sale:
Total current liabilities		944
Debt		1,924
Deferred income tax liabilities		1,473
Other liabilities		2,620
Total liabilities held for sale		6,961
Non-controlling interests		$ 7,142

Goodwill and Identified Intan47

Goodwill and Identified Intangible Assets - Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)
Goodwill [Roll Forward]
Goodwill, gross	$ 344,116
Accumulated impairment losses	(94,996)
Goodwill, beginning balance	249,120
Additions to goodwill through acquisitions	43,621
Foreign currency translation	1,738
Goodwill, gross	389,475
Accumulated impairment losses	(94,996)
Goodwill, ending balance	294,479
Infrastructure Solutions
Goodwill [Roll Forward]
Goodwill, gross	190,525
Accumulated impairment losses	(16,069)
Goodwill, beginning balance	174,456
Additions to goodwill through acquisitions	43,621
Foreign currency translation	1,138
Goodwill, gross	235,284
Accumulated impairment losses	(16,069)
Goodwill, ending balance	219,215
Corrosion Protection
Goodwill [Roll Forward]
Goodwill, gross	73,345
Accumulated impairment losses	(45,400)
Goodwill, beginning balance	27,945
Additions to goodwill through acquisitions	0
Foreign currency translation	600
Goodwill, gross	73,945
Accumulated impairment losses	(45,400)
Goodwill, ending balance	28,545
Energy Services
Goodwill [Roll Forward]
Goodwill, gross	80,246
Accumulated impairment losses	(33,527)
Goodwill, beginning balance	46,719
Additions to goodwill through acquisitions	0
Foreign currency translation	0
Goodwill, gross	80,246
Accumulated impairment losses	(33,527)
Goodwill, ending balance	46,719
Underground Solutions
Goodwill [Roll Forward]
Additions to goodwill through acquisitions	43,600
Goodwill, ending balance	$ 43,621

Goodwill and Identified Intan48

Goodwill and Identified Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 284,966	$ 249,726
Accumulated Amortization	(79,468)	(75,608)
Net Carrying Amount	$ 205,498	174,118
License Agreements
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives (Years)	4 years 1 month 10 days
Gross Carrying Amount	$ 3,898	3,893
Accumulated Amortization	(3,320)	(3,275)
Net Carrying Amount	$ 578	618
Leases
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives (Years)	11 years 3 months
Gross Carrying Amount	$ 2,065	2,065
Accumulated Amortization	(801)	(764)
Net Carrying Amount	$ 1,264	1,301
Trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives (Years)	15 years 8 days
Gross Carrying Amount	$ 24,079	22,519
Accumulated Amortization	(6,649)	(6,262)
Net Carrying Amount	$ 17,430	16,257
Non-competes
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives (Years)	2 years 2 months 9 days
Gross Carrying Amount	$ 1,210	1,210
Accumulated Amortization	(972)	(945)
Net Carrying Amount	$ 238	265
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives (Years)	12 years 5 months 25 days
Gross Carrying Amount	$ 185,222	164,779
Accumulated Amortization	(44,779)	(41,967)
Net Carrying Amount	$ 140,443	122,812
Patents and acquired technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Lives (Years)	13 years 8 months 10 days
Gross Carrying Amount	$ 68,492	55,260
Accumulated Amortization	(22,947)	(22,395)
Net Carrying Amount	45,545	$ 32,865
Underground Solutions | Trademarks
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets acquired	20,200
Underground Solutions | Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets acquired	1,500
Underground Solutions | Patents and acquired technology
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets acquired	$ 12,800

Goodwill and Identified Intan49

Goodwill and Identified Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 3.7	$ 3.1

Goodwill and Identified Intan50

Goodwill and Identified Intangible Assets - Estimated Future Amortization Expense (Details) $ in Thousands	Mar. 31, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,016	$ 16,544
2,017	17,040
2,018	16,937
2,019	16,749
2,020	$ 16,715

Long-Term Debt and Credit Fac51

Long-Term Debt and Credit Facility - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Other notes with interest rates from 3.3% to 6.5%	$ 9,852	$ 9,797
Subtotal	385,102	355,422
Less – Current maturities and notes payable	17,649	17,648
Less – Unamortized loan costs	4,072	4,294
Total	363,381	333,480
Term Note
Debt Instrument [Line Items]
Term note, due October 30, 2020, annualized rates of 2.63% and 2.61%, respectively	$ 341,250	$ 345,625
Current annualized interest rate	2.63%	2.61%
Line of Credit
Debt Instrument [Line Items]
Line of credit, 2.44%	$ 34,000	$ 0
Current annualized interest rate	2.40%	2.40%
Other notes | Minimum
Debt Instrument [Line Items]
Current annualized interest rate	3.30%	3.30%
Other notes | Maximum
Debt Instrument [Line Items]
Current annualized interest rate	6.50%	6.50%

Long-Term Debt and Credit Fac52

Long-Term Debt and Credit Facility - Additional Information (Details)	Oct. 30, 2015USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2015USD ($)	Mar. 31, 2017	Dec. 31, 2015USD ($)
Debt Instrument [Line Items]
Amount retired under prior credit facility	$ 344,700,000
Proceeds from line of credit			$ 34,000,000	$ 26,000,000
Debt designated as third-party debt		$ 9,600,000	9,600,000			$ 9,600,000
Third-party notes and bank debt held		200,000	200,000			100,000
Unamortized loan costs		(4,072,000)	(4,072,000)			(4,294,000)
Long-term debt, fair value		$ 388,700,000	$ 388,700,000			$ 349,100,000
2015 Interest Rate Swap
Debt Instrument [Line Items]
Notional Amount	$ 262,500,000
Fixed interest rate	1.46%
Annualized borrowing rate		3.46%	3.46%
2015 Credit Facility
Debt Instrument [Line Items]
Senior secured credit facility	$ 650,000,000
Maximum borrowing capacity	$ 300,000,000	$ 350,000,000	$ 350,000,000
Term of revolving line of credit	5 years
Term of term loan facility			5 years
Term note, due October 30, 2020, annualized rates of 2.63% and 2.61%, respectively		341,300,000	$ 341,300,000
Proceeds from line of credit		4,000,000	34,000,000
Letters of credit issued and outstanding		$ 31,800,000	$ 31,800,000
Actual financial leverage ratio		3.42	3.42
Portion of amortization of term loan	$ 262,500,000
Initial maximum financial leverage ratio						3.75
Remaining borrowing capacity		$ 65,900,000	$ 65,900,000
Minimum permitted fixed charge coverage ratio		1.25	1.25
Actual fixed charge coverage ratio		1.57	1.57
2015 Credit Facility | Insurance Carriers Collateral
Debt Instrument [Line Items]
Letters of credit issued and outstanding		$ 16,600,000	$ 16,600,000
2015 Credit Facility | Work Performance Obligations
Debt Instrument [Line Items]
Letters of credit issued and outstanding		$ 15,200,000	$ 15,200,000
2015 Credit Facility | LIBOR
Debt Instrument [Line Items]
Interest rate at period end		2.48%	2.48%
2015 Credit Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate			1.25%
2015 Credit Facility | LIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate			2.25%
2015 Credit Facility | Underground Solutions
Debt Instrument [Line Items]
Proceeds from line of credit			$ 30,000,000
Initial maximum financial leverage ratio		4	4
2013 Credit Facility
Debt Instrument [Line Items]
Term note, due October 30, 2020, annualized rates of 2.63% and 2.61%, respectively						$ 345,600,000
Line of credit, 2.44%						0
Held-for-sale
Debt Instrument [Line Items]
Debt listed as held for sale						$ 1,924,000
Scenario, Forecast | 2015 Credit Facility
Debt Instrument [Line Items]
Initial maximum financial leverage ratio					3.75

Stockholders' Equity and Equi53

Stockholders' Equity and Equity Compensation - Additional Information (Details)	3 Months Ended
	Mar. 31, 2016USD ($)plan$ / sharesshares	Mar. 31, 2015USD ($)$ / shares	Nov. 30, 2015USD ($)
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share repurchase program, authorized amount	$ 20,000,000		$ 20,000,000
Number of equity based compensation plans | plan	2
Closing stock price (in dollars per share) | $ / shares	$ 21.09	$ 18.05
Stock Options [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share based compensation expense	$ 0	$ 100,000
Stock Options [Member] | Minimum
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Award vesting period	7 years
Stock Options [Member] | Maximum
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Award vesting period	10 years
Stock Awards [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share based compensation expense	$ 2,300,000	$ 1,500,000
Unrecognized share based compensation expense	$ 18,800,000
Weighted average recognition period	2 years 3 months 2 days
2013 Employee Plan [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Number of shares of common stock reserved for issuance | shares	2,895,000
Number of shares available for issuance | shares	350,022
2011 Director Plan [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Number of shares of common stock reserved for issuance | shares	250,000
Number of shares available for issuance | shares	69,264
Open Market Repurchase Program [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Stock repurchased during period, shares | shares	858,582
Stock repurchased during period, value	$ 15,300,000
Shares repurchased, average price per share (in Dollars per share) | $ / shares	$ 17.83
Equity Compensation Programs [Member]
Stockholders' Equity and Equity Compensation (Details) [Line Items]
Share repurchase program, authorized amount	$ 10,000,000
Stock repurchased during period, shares | shares	52,074
Stock repurchased during period, value	$ 1,000,000
Shares repurchased, average price per share (in Dollars per share) | $ / shares	$ 19.61

Stockholders' Equity and Equi54

Stockholders' Equity and Equity Compensation - Summary of Stock Award Activity (Details)	3 Months Ended
	Mar. 31, 2016$ / sharesshares
Number of Awards
Outstanding, beginning balance | shares	1,275,707
Outstanding, ending balance | shares	1,529,463
Weighted Average Award Date Fair Value (in dollars per share)
Outstanding, beginning balance (in Dollars per share) | $ / shares	$ 19.60
Outstanding, ending balance (in Dollars per share) | $ / shares	$ 18.80
Restricted Stock
Number of Awards
Awarded | shares	0
Distributed | shares	(143,993)
Forfeited | shares	(14,528)
Weighted Average Award Date Fair Value (in dollars per share)
Awarded (in Dollars per share) | $ / shares	$ 0
Distributed (in Dollars per share) | $ / shares	23.65
Forfeited (in Dollars per share) | $ / shares	$ 23.40
Restricted Stock Units
Number of Awards
Awarded | shares	274,058
Distributed | shares	(9,733)
Forfeited | shares	(45,340)
Weighted Average Award Date Fair Value (in dollars per share)
Awarded (in Dollars per share) | $ / shares	$ 18.20
Distributed (in Dollars per share) | $ / shares	21.58
Forfeited (in Dollars per share) | $ / shares	$ 17.33
Performance Stock Units
Number of Awards
Awarded | shares	234,776
Distributed | shares	0
Forfeited | shares	(41,484)
Weighted Average Award Date Fair Value (in dollars per share)
Awarded (in Dollars per share) | $ / shares	$ 18.24
Distributed (in Dollars per share) | $ / shares	0
Forfeited (in Dollars per share) | $ / shares	$ 18.68

Stockholders' Equity and Equi55

Stockholders' Equity and Equity Compensation - Summary of Deferred Stock Unit Activity (Details)	3 Months Ended
	Mar. 31, 2016$ / sharesshares
Number of Awards
Outstanding, beginning balance | shares	1,275,707
Outstanding, ending balance | shares	1,529,463
Weighted Average Award Date Fair Value (in dollars per share)
Outstanding, beginning balance (in Dollars per share) | $ / shares	$ 19.60
Outstanding, ending balance (in Dollars per share) | $ / shares	$ 18.80
Deferred Stock Units [Member]
Number of Awards
Outstanding, beginning balance | shares	247,219
Awarded | shares	1,062
Distributed | shares	0
Outstanding, ending balance | shares	248,281
Weighted Average Award Date Fair Value (in dollars per share)
Outstanding, beginning balance (in Dollars per share) | $ / shares	$ 19.92
Awarded (in Dollars per share) | $ / shares	19.07
Distributed (in Dollars per share) | $ / shares	0
Outstanding, ending balance (in Dollars per share) | $ / shares	$ 19.91

Stockholders' Equity and Equi56

Stockholders' Equity and Equity Compensation - Summary of Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2016$ / sharesshares
Shares
Outstanding, beginning balance (in shares) | shares	288,383
Granted (in shares) | shares	0
Exercised (in shares) | shares	(18,193)
Canceled/Expired (in shares) | shares	0
Outstanding, ending balance (in shares) | shares	270,190
Exercisable (in shares) | shares	270,190
Weighted Average Exercise Price (in Dollars per share)
Outstanding, beginning balance (in Dollars per share) | $ / shares	$ 21.78
Granted (in Dollars per share) | $ / shares	0
Exercised (in Dollars per share) | $ / shares	16.80
Canceled/Expired (in Dollars per share) | $ / shares	0
Outstanding, ending balance (in Dollars per share) | $ / shares	22.06
Exercisable (in Dollars per share) | $ / shares	$ 22.06

Stockholders' Equity and Equi57

Stockholders' Equity and Equity Compensation - Financial Data for Stock Option Exercises (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Equity [Abstract]
Amount collected from stock option exercises	$ 306	$ 1,299
Total intrinsic value of stock option exercises	352	273
Tax shortfall of stock option exercises recorded in additional paid-in-capital	18	100
Aggregate intrinsic value of outstanding stock options	320	543
Aggregate intrinsic value of exercisable stock options	$ 320	$ 543

Taxes on Income (Details)

Taxes on Income (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective income tax rate	54.60%	57.60%
Change in valuation allowance	$ 1.9

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Conditional Agreement
Loss Contingencies [Line Items]
Loss contingency accrual		$ 2,700,000
Pre-Acquisition Related Contingencies | Brinderson LP
Loss Contingencies [Line Items]
Loss contingency accrual	$ 10,500,000	10,500,000
Minimum | Pre-Acquisition Related Contingencies | Brinderson LP
Loss Contingencies [Line Items]
Range of possible loss		0
Maximum | Pre-Acquisition Related Contingencies | Brinderson LP
Loss Contingencies [Line Items]
Range of possible loss		$ 24,000,000

Segment Reporting - Additional

Segment Reporting - Additional Information (Details)	3 Months Ended
	Mar. 31, 2016segment
Segment Reporting [Abstract]
Number of operating segments	3
Number of reportable segments	3

Segment Reporting - Financial I

Segment Reporting - Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 293,908	$ 309,166
Gross profit	54,414	59,190
Operating income	(4,139)	9,125
Restructuring charges	6,797	658
Acquisition-related expenses	1,031	323
Restructuring Plan 2014
Segment Reporting Information [Line Items]
Restructuring charges	(200)	800
Restructuring Plan 2016
Segment Reporting Information [Line Items]
Restructuring charges	9,742
Underground Solutions
Segment Reporting Information [Line Items]
Acquisition-related expenses	1,000
Inventory step up expense	1,200
Schultz Mechanical Contractors, Inc.
Segment Reporting Information [Line Items]
Acquisition-related expenses		300
Infrastructure Solutions
Segment Reporting Information [Line Items]
Revenues	125,762	122,473
Gross profit	29,744	28,615
Operating income	5,808	7,332
Infrastructure Solutions | Restructuring Plan 2014
Segment Reporting Information [Line Items]
Restructuring charges	(200)	800
Infrastructure Solutions | Restructuring Plan 2016
Segment Reporting Information [Line Items]
Restructuring charges	2,153
Corrosion Protection
Segment Reporting Information [Line Items]
Revenues	92,446	101,743
Gross profit	17,199	20,829
Operating income	(5,670)	500
Corrosion Protection | Restructuring Plan 2016
Segment Reporting Information [Line Items]
Restructuring charges	2,737
Energy Services
Segment Reporting Information [Line Items]
Revenues	75,700	84,950
Gross profit	7,471	9,746
Operating income	(4,277)	$ 1,293
Energy Services | Restructuring Plan 2016
Segment Reporting Information [Line Items]
Restructuring charges	$ 4,852

Segment Reporting - Summary of

Segment Reporting - Summary of Revenues, Gross Profit and Operating Income (Loss) by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 293,908	$ 309,166
Gross profit	54,414	59,190
Operating income (loss)	(4,139)	9,125
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	223,569	223,141
Gross profit	39,862	37,854
Operating income (loss)	(7,552)	(2,913)
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	27,619	46,651
Gross profit	5,414	12,188
Operating income (loss)	1,569	8,599
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	13,821	14,118
Gross profit	2,789	4,225
Operating income (loss)	159	1,471
Other Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	28,899	25,256
Gross profit	6,349	4,923
Operating income (loss)	$ 1,685	$ 1,968

Derivative Financial Instrume63

Derivative Financial Instruments - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Oct. 30, 2015
Debt Instrument [Line Items]
Gain upon settlement of cash flow hedges, (less than $0.1 million)	$ 100,000	$ 100,000
2015 Credit Facility
Debt Instrument [Line Items]
Amount of hedged item			$ 262,500,000
Maximum borrowing capacity	350,000,000		300,000,000
Recurring
Debt Instrument [Line Items]
Derivative Liability	6,354,000	256,000
Recurring | Level 2
Debt Instrument [Line Items]
Derivative Liability	6,354,000	256,000
Recurring | Designated as Hedging Instrument | Level 2
Debt Instrument [Line Items]
Derivative Liability	$ 6,203,000	$ 256,000
2015 Interest Rate Swap
Debt Instrument [Line Items]
Notional Amount			$ 262,500,000
Fixed interest rate			1.46%
Annualized borrowing rate	3.46%

Derivative Financial Instrume64

Derivative Financial Instruments - Summary of the Fair Value Amounts of Derivative Instruments (Details) - Recurring - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative assets	$ 0	$ 109
Derivative liabilities	6,354	256
Forward Currency Contracts
Derivatives, Fair Value [Line Items]
Derivative assets	0	109
Derivative liabilities	1,299	243
Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative liabilities	5,055	13
Level 2
Derivatives, Fair Value [Line Items]
Derivative assets	0	109
Derivative liabilities	6,354	256
Net derivative asset (liability)	(6,354)	(147)
Level 2 | Forward Currency Contracts
Derivatives, Fair Value [Line Items]
Derivative assets	0	109
Derivative liabilities	1,299	243
Level 2 | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative liabilities	5,055	13
Designated as Hedging Instrument | Level 2
Derivatives, Fair Value [Line Items]
Derivative assets	0	18
Derivative liabilities	6,203	256
Designated as Hedging Instrument | Level 2 | Forward Currency Contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	18
Designated as Hedging Instrument | Level 2 | Forward Currency Contracts | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	1,148	243
Designated as Hedging Instrument | Level 2 | Interest Rate Swaps | Other non-current liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	5,055	13
Not Designated as Hedging Instrument | Level 2
Derivatives, Fair Value [Line Items]
Derivative assets	0	91
Derivative liabilities	151	0
Not Designated as Hedging Instrument | Level 2 | Forward Currency Contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	91
Not Designated as Hedging Instrument | Level 2 | Forward Currency Contracts | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 151	$ 0

Derivative Financial Instrume65

Derivative Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets:
Derivative assets	$ 0	$ 109
Liabilities:
Derivative liabilities	6,354	256
Level 1
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Level 2
Assets:
Derivative assets	0	109
Liabilities:
Derivative liabilities	6,354	256
Level 3
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Forward Currency Contracts
Assets:
Derivative assets	0	109
Liabilities:
Derivative liabilities	1,299	243
Forward Currency Contracts | Level 1
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Forward Currency Contracts | Level 2
Assets:
Derivative assets	0	109
Liabilities:
Derivative liabilities	1,299	243
Forward Currency Contracts | Level 3
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Interest Rate Swaps
Liabilities:
Derivative liabilities	5,055	13
Interest Rate Swaps | Level 1
Liabilities:
Derivative liabilities	0	0
Interest Rate Swaps | Level 2
Liabilities:
Derivative liabilities	5,055	13
Interest Rate Swaps | Level 3
Liabilities:
Derivative liabilities	$ 0	$ 0

Derivative Financial Instrume66

Derivative Financial Instruments - Summary of Derivative Positions (Details)	3 Months Ended
	Mar. 31, 2016USD ($)	Mar. 31, 2016GBP (£)
Canadian Dollar/USD | Sell
Derivative [Line Items]
Notional Amount | $	$ 3,704,127
Weighted Average Remaining Maturity In Years	2 months
Average Exchange Rate	1.30	1.30
USD/British Pound | Sell
Derivative [Line Items]
Notional Amount | £		£ 4,595,000
Weighted Average Remaining Maturity In Years	2 months 15 days
Average Exchange Rate	1.44	1.44
EURO/British Pound | Sell
Derivative [Line Items]
Notional Amount | £		£ 8,000,000
Weighted Average Remaining Maturity In Years	2 months 15 days
Average Exchange Rate	0.79	0.79
Interest Rate Swaps
Derivative [Line Items]
Notional Amount | $	$ 255,937,500
Weighted Average Remaining Maturity In Years	4 years 7 months

Uncategorized Items - aegn-2016

Label	Element	Value
Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations	us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	$ 211,696,000