Entity Central Index Key Impact of common stock equivalents arising from share based payment arrangements on earnings per share basic. Document and entity information. Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Restricted cash Restricted Cash And Cash Equivalents Accounts receivable, net Accounts Receivable Net Current Costs and estimated earnings in excess of billings on uncompleted contracts Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year Inventories, net Inventory Net Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Prepaid income taxes Prepaid Taxes Assets held for sale Assets Of Disposal Group Including Discontinued Operation Current Total current assets Assets Current Property, plant and equipment, net Property Plant And Equipment Net Goodwill Goodwill Intangible assets – finite life, net Finite Lived Intangible Assets Net Intangible assets – indefinite life Indefinite Lived Intangible Assets Excluding Goodwill Deferred charges and other assets Deferred Costs And Other Assets Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Current portion of debt Long Term Debt Current Accounts payable and accrued expenses Accounts Payable And Accrued Liabilities Current Billings in excess of costs and estimated earnings on uncompleted contracts Billings In Excess Of Cost Current Note payable Notes Payable Current Income taxes payable Accrued Income Taxes Current Total current liabilities Liabilities Current Other liabilities Other Liabilities Noncurrent Debt, less current portion Long Term Debt Noncurrent Deferred income tax liability, net Deferred Tax Liabilities Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments And Contingencies Shareholders’ equity: Stockholders Equity [Abstract] Preferred stock, $.01 par value; 10,000 shares authorized, none issued Preferred Stock Value Common stock, $.01 par value; 100,000,000 shares authorized, 34,740,933 and 34,707,924 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively Common Stock Value Capital in excess of par value Additional Paid In Capital Common Stock Accumulated loss Retained Earnings Accumulated Deficit Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Stockholders' equity before treasury stock Stockholders Equity Before Treasury Stock Less treasury stock, at cost, 137,920 shares at March 31, 2018 and December 31, 2017 Treasury Stock Value Total shareholders’ equity Stockholders Equity Total liabilities and shareholders' equity Liabilities And Stockholders Equity Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, shares issued Preferred Stock Shares Issued Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares authorized Common Stock Shares Authorized Common stock, shares issued Common Stock Shares Issued Common Stock, shares outstanding Common Stock Shares Outstanding Treasury stock, shares Treasury Stock Shares Income Statement [Abstract] Net sales Sales Revenue Net Cost of sales Cost Of Goods And Services Sold Gross profit Gross Profit Selling and administrative expenses Selling General And Administrative Expense Amortization and earnout expenses Other Cost And Expense Operating Gain on divestitures, net of selling costs Gain Loss On Sale Of Business Restructuring expenses Restructuring Charges Income from operations Operating Income Loss Other expense, net Other Nonoperating Income Expense Interest expense Interest Expense Income (loss) before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax expense (benefit) Income Tax Expense Benefit Net income Profit Loss Earnings per share: Earnings Per Share [Abstract] Basic Earnings Per Share Basic Diluted Earnings Per Share Diluted Weighted average number of common shares outstanding: Weighted Average Number Of Shares Outstanding [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Diluted Weighted Average Number Of Diluted Shares Outstanding Statement Of Income And Comprehensive Income [Abstract] Net income Other comprehensive income, net of tax: Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract] Interest rate swap Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent Foreign currency translation Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent Comprehensive income Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Payments of contingent consideration related to acquisitions operating activities. Inventory reserve expense benefit. Increase (Decrease) in Deferred Charges And Other Assets Payments of contingent consideration related to acquisitions. Payments on capital leases and sale-leaseback transactions. Statement Of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Adjustment to reconcile net income to net cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation and amortization Depreciation Depletion And Amortization Unrealized foreign currency gain Foreign Currency Transaction Gain Loss Unrealized Net gain on interest rate swaps Derivative Gain Loss On Derivative Net Fair value adjustments to earnout liabilities Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 Earnout payments Payments Of Contingent Consideration Related To Acquisitions Operating Activities (Gain) / loss on sale of property and equipment Gain Loss On Sale Of Property Plant Equipment Gain on divestitures Debt discount amortization Amortization Of Debt Discount Premium Share-based compensation expense Share Based Compensation Bad debt expense Provision For Doubtful Accounts Inventory reserve expense Inventory Reserve Expense Benefit Deferred income tax expense Deferred Income Tax Expense Benefit Changes in operating assets and liabilities, net of divestitures: Increase Decrease In Operating Capital [Abstract] Accounts receivable Increase Decrease In Accounts Receivable Costs and estimated earnings in excess of billings on uncompleted contracts Increase Decrease In Cost In Excess Of Billing On Uncompleted Contract Inventories Increase Decrease In Inventories Prepaid expense and other current assets Increase Decrease In Prepaid Deferred Expense And Other Assets Deferred charges and other assets Increase Decrease In Deferred Charges And Other Assets Accounts payable and accrued expenses Increase Decrease In Accounts Payable And Accrued Liabilities Billings in excess of costs and estimated earnings on uncompleted contracts Increase Decrease In Billing In Excess Of Cost Of Earnings Income taxes payable Increase Decrease In Accrued Income Taxes Payable Other liabilities Increase Decrease In Other Operating Liabilities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Cash flows from investing activities: Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Acquisitions of property and equipment Payments To Acquire Property Plant And Equipment Net cash proceeds from divestitures Proceeds From Divestiture Of Businesses Net Of Cash Divested Proceeds from sale of property and equipment Proceeds From Sale Of Property Plant And Equipment Net cash provided by (used in) investing activities Net Cash Provided By Used In Investing Activities Continuing Operations Cash flows from financing activities: Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Net repayments on revolving credit lines Proceeds From Repayments Of Lines Of Credit Repayments of debt Repayments Of Debt Earnout payments Payments Of Contingent Consideration Related To Acquisitions Payments on capital leases and sale-leaseback transactions Payments On Capital Leases And Sale Leaseback Transactions Proceeds from employee stock purchase plan, exercise of stock options, and dividend reinvestment plan Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Dividends paid to common shareholders Payments Of Dividends Common Stock Net cash used in financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Net increase (decrease) in cash, cash equivalents and restricted cash Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash, cash equivalents and restricted cash at beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Cash paid during the period for: Supplemental Cash Flow Information [Abstract] Interest Interest Paid Income taxes Income Taxes Paid Net Non-cash transaction: Noncash Investing And Financing Items [Abstract] Net consideration receivable from divestiture Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 Organization Consolidation And Presentation Of Financial Statements [Abstract] Basis of Reporting for Consolidated Financial Statements Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Accounting Changes And Error Corrections [Abstract] New Financial Accounting Pronouncements New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Receivables [Abstract] Accounts Receivable Loans Notes Trade And Other Receivables Disclosure [Text Block] Costs and estimated earnings on uncompleted contracts disclosure. Text Block [Abstract] Costs and Estimated Earnings on Uncompleted Contracts Costs And Estimated Earnings On Uncompleted Contracts Disclosure [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill And Intangible Assets Disclosure [Text Block] Payables And Accruals [Abstract] Accounts Payable and Accrued Expenses Accounts Payable And Accrued Liabilities Disclosure [Text Block] Debt Disclosure [Abstract] Senior Debt Debt Disclosure [Text Block] Earnings and Dividends per Share Earnings Per Share [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Share-Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Compensation And Retirement Disclosure [Abstract] Pension and Employee Benefit Plans Pension And Other Postretirement Benefits Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Investments All Other Investments [Abstract] Financial Instruments Financial Instruments Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies - Legal Matters Commitments And Contingencies Disclosure [Text Block] Segment Reporting [Abstract] Business Segment Information Segment Reporting Disclosure [Text Block] Discontinued Operations And Disposal Groups [Abstract] Divestitures Disposal Groups Including Discontinued Operations Disclosure [Text Block] Accounting Policies [Abstract] Significant Accounting Policy Updates Significant Accounting Policies [Text Block] Accounting Standards Adopted in Fiscal 2018 New Accounting Pronouncements Policy Policy [Text Block] New accounting standards not yet adopted policy. Accounting Standards Yet to be Adopted New Accounting Standards Not Yet Adopted Policy [Text Block] Revenue Recognition Revenue Recognition Policy [Text Block] Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash Reported within Condensed Consolidated Statements of Cash Flows Schedule Of Restricted Cash And Cash Equivalents [Text Block] Summary of Accounts Receivable Schedule Of Accounts Notes Loans And Financing Receivable [Text Block] Costs and Estimated Earnings on Uncompleted Contracts Costs In Excess Of Billings And Billings In Excess Of Costs Table [Text Block] Summary of Inventories Schedule Of Inventory Current Table [Text Block] Goodwill / Tradename Schedule Of Intangible Assets And Goodwill Table [Text Block] Intangible Assets - Finite Life Schedule Of Finite Lived Intangible Assets Table [Text Block] Summary of Finite Lived Intangible Assets Activities Finite Lived Intangible Assets Amortization Expense Table [Text Block] Summary of Accounts Payable and Accrued Expenses Schedule Of Accounts Payable And Accrued Liabilities Table [Text Block] Schedule of current portion of earn out liability and long term portion of earn out liability. Schedule of Current and Long term Portion of Earnout Liability Schedule Of Current Portion Of Earn Out Liability And Long Term Portion Of Earn Out Liability [Text Block] Summary of Debt Schedule Of Debt Table [Text Block] Number of Shares Outstanding for Calculation of Earnings Per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Components of Pension and Employee Benefit Expenses Schedule Of Net Benefit Costs Table [Text Block] Net Sales and Income from Operation by Business Segment Schedule Of Segment Reporting Information By Segment [Text Block] Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets Reconciliation Of Other Significant Reconciling Items From Segments To Consolidated [Text Block] Goodwill Schedule Of Goodwill [Text Block] Intra segment and inter segment elimination by revenue. Intra-Segment and Inter-Segment Revenues Intra Segment And Inter Segment Elimination By Revenue Table [Text Block] New accounting pronouncements or change in accounting principle increase in accumulated income loss. New accounting pronouncements or change in accounting principle increase decrease in accumulated other comprehensive income loss. New Accounting Pronouncements Or Change In Accounting Principle [Table] New Accounting Pronouncements Or Change In Accounting Principle [Table] Prospective Adoption of New Accounting Pronouncements Prospective Adoption Of New Accounting Pronouncements [Axis] Accounting Guidance Accounting Guidance [Member] Accounting Standards Update 2018-02. ASU 2018-02 [Member] Accounting Standards Update201802 [Member] Scenario Statement Scenario [Axis] Scenario, Unspecified Scenario Unspecified [Domain] Scenario Forecast [Member] Scenario Forecast [Member] Accounting Standards Update 2017-01. ASU 2017-01 [Member] Accounting Standards Update201701 [Member] Adjustments for New Accounting Pronouncements Adjustments For New Accounting Pronouncements [Axis] Type of Adoption Type Of Adoption [Member] ASU 2016-15 [Member] Accounting Standards Update201615 [Member] ASU 2014-09 [Member] Accounting Standards Update201409 [Member] Range Range [Axis] Range Range [Member] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Segments Statement Business Segments [Axis] Segments Segment [Domain] Energy solutions and industrial solutions segments. Energy Solutions and Industrial Solutions Segments [Member] Energy Solutions And Industrial Solutions Segments [Member] New Accounting Pronouncements Or Change In Accounting Principle [Line Items] New Accounting Pronouncements Or Change In Accounting Principle [Line Items] Increase in Accumulated loss New Accounting Pronouncements Or Change In Accounting Principle Increase In Accumulated Deficit Decrease in accumulated other comprehensive loss New Accounting Pronouncements Or Change In Accounting Principle Increase Decrease In Accumulated Other Comprehensive Income Loss U.S. federal corporate statutory tax rate Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Number of divestitures. Number of divestitures Number Of Divestitures Cash And Cash Equivalents Highly Liquid Investments Maximum Maturity Period Cash equivalents and restricted cash, original maturities of highly liquid investments Cash And Cash Equivalents Highly Liquid Investments Maximum Maturity Period ASU 2016-18 [Member] Accounting Standards Update201618 [Member] Restricted cash Restricted Cash And Cash Equivalents At Carrying Value Restricted cash included within deferred charges and other assets Restricted Cash And Cash Equivalents Noncurrent Total cash, cash equivalents and restricted cash New accounting pronouncement or change in accounting principle reclassification of cash flow activities. Reclassification of certain cash receipts and payments from financing activity to investing activity New Accounting Pronouncement Or Change In Accounting Principle Reclassification Of Cash Flow Activities Revenue recognition number of performance obligations. Revenue recognition contracts life cycle period. Revenue performance obligation, description of timing Revenue Performance Obligation Description Of Timing Contracts life Revenue Recognition Contracts Life Cycle Period Number of performance obligation Revenue Recognition Number Of Performance Obligations Schedule Of Accounts Notes Loans And Financing Receivable [Table] Schedule Of Accounts Notes Loans And Financing Receivable [Table] Receivable Type Accounts Notes Loans And Financing Receivable By Receivable Type [Axis] Receivable Receivable Type [Domain] Trade Accounts Receivable [Member] Trade Accounts Receivable [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Notes And Loans Receivable [Line Items] Contract receivables Receivables Long Term Contracts Or Programs Trade receivables Accounts Receivable Gross Current Allowance for doubtful accounts Allowance For Doubtful Accounts Receivable Current Total accounts receivable Retainage receivables on contracts period. Amount billed but not received under retainage provisions in contracts Contract Receivable Retainage Retainage receivables on contracts period Retainage Receivables On Contracts Period The cost component of contract revenues earned during the period arising under the terms of a contract. May include government contracts, construction contracts, and any other contract related to a particular project or product. The estimated earnings component of contract revenues earned during the period arising under the terms of a contract. May include government contracts, construction contracts, and any other contract related to a particular project or product. The increase (decrease) in the amount of contract billed receivables. Billings on uncompleted contracts Under or (Over) costs and estimated earnings. Included in accompanying balance sheets under captions. Costs In Excess Of Billings On Uncompleted Contracts Or Programs [Abstract] Costs incurred on uncompleted contracts Contracts Revenue Cost Uncompleted Contracts Component Estimated earnings Contracts Revenue Estimated Earnings Uncompleted Contracts Component Total costs and estimated earnings on uncompleted contracts, gross Contracts Revenue Less billings to date Contract Billed Receivables Increase Decrease Total costs and estimated earnings on uncompleted contracts, net Net Under Over Contract Billing Uncompleted Contracts Included in the accompanying condensed consolidated balance sheets under the following captions: Included In Accompanying Balance Sheets Under Captions [Abstract] Billings in excess of costs and estimated earnings on uncompleted contracts Total costs and estimated earnings on uncompleted contracts, net Provision for estimated losses on uncompleted contracts Loss On Contracts Inventory Net [Abstract] Raw materials Inventory Raw Materials Work in process Inventory Work In Process Finished goods Inventory Finished Goods Obsolescence allowance Inventory Valuation Reserves Total inventories Amounts credited to the allowance for obsolete inventory Inventory Write Down Goodwill during period divestitures. Goodwill, beginning balance Goodwill, divestitures Goodwill During Period Divestitures Goodwill, impairment Goodwill Impairment Loss Goodwill, foreign currency translation Goodwill Foreign Currency Translation Gain Loss Goodwill, ending balance Indefinite lived intangible assets excluding goodwill during period divestitures. Tradename, beginning balance Tradename, divestitures Indefinite Lived Intangible Assets Excluding Goodwill During Period Divestitures Tradename, impairment Impairment Of Intangible Assets Indefinitelived Excluding Goodwill Tradename, foreign currency translation Indefinite Lived Intangible Assets Foreign Currency Translation Gain Loss Tradename, ending balance Schedule Of Finite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Technology [Member] Technology Based Intangible Assets [Member] Customer Lists [Member] Customer Lists [Member] Non-compete Agreements [Member] Noncompete Agreements [Member] Tradename [Member] Trade Names [Member] Foreign currency translation adjustment. Foreign Currency Adjustments [Member] Foreign Currency Translation Adjustment [Member] Finite-Lived Intangible Assets [Line Items] Finite Lived Intangible Assets [Line Items] Cost Finite Lived Intangible Assets Gross Accumulated Amortization Finite Lived Intangible Assets Accumulated Amortization Finite lived intangible assets divestitures. Intangible assets – finite life, net at beginning of period Amortization expense Amortization Of Intangible Assets Divestitures Finite Lived Intangible Assets Divestitures Foreign currency adjustments Finite Lived Intangible Assets Foreign Currency Translation Gain Loss Intangible assets – finite life, net at end of period Amortization expense of finite life intangible assets Amortization expense of finite life intangibles for 2018 Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year Amortization expense of finite life intangibles for 2019 Finite Lived Intangible Assets Amortization Expense Year Two Amortization expense of finite life intangibles for 2020 Finite Lived Intangible Assets Amortization Expense Year Three Amortization expense of finite life intangibles for 2021 Finite Lived Intangible Assets Amortization Expense Year Four Amortization expense of finite life intangibles for 2022 Finite Lived Intangible Assets Amortization Expense Year Five Goodwill or indefinite life intangible asset charges Asset Impairment Charges Trade accounts payable, including due to subcontractors Accounts Payable Trade Current Compensation and related benefits Employee Related Liabilities Current Current portion of earnout liability Business Combination Contingent Consideration Liability Current Accrued warranty Product Warranty Accrual Classified Current Contract liabilities Contract With Customer Liability Current Other accrued expenses Other Accrued Liabilities Current Total accounts payable and accrued expenses Business combination contingent consideration current portion of compensation expense adjustment. Business combination contingent consideration current portion of earn out payment. Business combination contingent consideration long term portion of foreign currency translation adjustment. Schedule Of Business Acquisitions By Acquisition Contingent Consideration [Table] Schedule Of Business Acquisitions By Acquisition Contingent Consideration [Table] Energy solutions segment. Energy Solutions Segment [Member] Energy Solutions Segment [Member] Business Acquisition Contingent Consideration [Line Items] Business Acquisition Contingent Consideration [Line Items] Earnout accrued at beginning of period Business Combination Contingent Consideration Liability Fair value adjustment Compensation expense adjustment Business Combination Contingent Consideration Current Portion Of Compensation Expense Adjustment Payment Business Combination Contingent Consideration Current Portion Of Earn Out Payment Foreign currency translation adjustment Business Combination Contingent Consideration Long Term Portion Of Foreign Currency Translation Adjustment Total earnout liability at end of period Less: current portion of earnout Balance of long term portion of earnout recorded in other liabilities at end of period Business Combination Contingent Consideration Liability Noncurrent Debt Instrument [Table] Debt Instrument [Table] Legal Entity Legal Entity [Axis] Entity Entity [Domain] Aarding Thermal Acoustics BV. Aarding Thermal Acoustics B.V. ("Aarding") [Member] Aarding Thermal Acoustics B V [Member] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] US dollar borrowings. US Dollar Borrowings [Member] Us Dollar Borrowings [Member] Term Debt [Member] Term Debt [Member] Term Debt [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Senior secured term loan. Term Loan [Member] Senior Secured Term Loan [Member] U.S. Dollar Revolving Loans [Member] Revolving Credit Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Total outstanding borrowings Long Term Debt Total outstanding borrowings under Credit Facility Line Of Credit Unamortized debt discount Debt Instrument Unamortized Discount Less: current portion Total debt, less current portion Debt instruments maturity month year. Term loans, year of maturity Debt Instruments Maturity Month Year Line Of Credit Facility [Table] Line Of Credit Facility [Table] Letters of Credit [Member] Standby Letters Of Credit [Member] Credit agreement. Credit Agreement [Member] Credit Agreement [Member] ING Bank NV. ING Bank N.V. ("Aarding") [Member] I N G Bank N V Aarding [Member] Bank guarantees. Bank Guarantee Facility [Member] Bank Guarantees [Member] Short-term Debt, Type Short Term Debt Type [Axis] Short-term Debt, Type Short Term Debt Type [Domain] Bank Overdrafts [Member] Bank Overdrafts [Member] Line Of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Prepayment of outstanding debt Early Repayment Of Senior Debt Scheduled payments of debt Debt Instrument Periodic Payment Repayments of debt Final scheduled principal payment due in September 2020 Debt Instrument Periodic Payment Terms Balloon Payment To Be Paid Aggregate principal amount outstanding under the credit facilities Letters Of Credit Outstanding Amount Unused credit availability under credit facility Debt Instrument Unused Borrowing Capacity Amount Weighted average stated interest rate on outstanding borrowings Debt Weighted Average Interest Rate Interest rate swap, fair value, asset Interest Rate Cash Flow Hedge Asset At Fair Value Credit facility, date of amendment. Maximum consolidated leverage ratio. Credit facility, date of amendment Credit Facility Date Of Amendment Maximum consolidated leverage ratio Maximum Consolidated Leverage Ratio Total borrowing capacity Line Of Credit Facility Maximum Borrowing Capacity Aggregate principal amount outstanding under the credit facilities Basic net income and earnings per share, Numerator (Income) Net Income Loss Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan, Numerator (Income) Amount Of Dilutive Securities Stock Options And Restrictive Stock Units Diluted earnings and earnings per share, Numerator (Income) Net Income Loss Available To Common Stockholders Diluted Basic net income and earnings per share, Denominator (Shares) Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan, Denominator (Shares) Incremental Common Shares Attributable To Share Based Payment Arrangements Diluted earnings and earnings per share, Denominator (Shares) Basic net income and earnings per share, Per Share Amount Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan, Per Share Amount Impact Of Common Stock Equivalents Arising From Share Based Payment Arrangements On Earnings Per Share Basic Diluted earnings and earnings per share, Per Share Amount Earnings And Dividends Per Share [Abstract] Earnings And Dividends Per Share [Abstract] Shares not included in computation of diluted Earning per share Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Restricted Stock Units [Member] Restricted Stock Units R S U [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Recognized share-based compensation awards Allocated Share Based Compensation Expense Number of stock option granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Number of restricted stock awards granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted-average fair value of restricted stock unit granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Cash received from employees stock option exercised Proceeds From Stock Options Exercised Intrinsic value of option exercised Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value Number of options exercised Stock Issued During Period Shares Stock Options Exercised Schedule Of Defined Benefit Plans Disclosures [Table] Schedule Of Defined Benefit Plans Disclosures [Table] Retirement Plan Type Retirement Plan Type [Axis] Retirement Plan Type Retirement Plan Type [Domain] Pension Plan [Member] Pension Plans Defined Benefit [Member] Health Care Plan [Member] Other Pension Plans Postretirement Or Supplemental Plans Defined Benefit [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Service cost Defined Benefit Plan Service Cost Interest cost Defined Benefit Plan Interest Cost Amortization of loss Defined Benefit Plan Amortization Of Prior Service Cost Credit Expected return on plan assets Defined Benefit Plan Expected Return On Plan Assets Amortization of net actuarial loss Defined Benefit Plan Amortization Of Gains Losses Net periodic benefit cost (gain) Defined Benefit Plan Net Periodic Benefit Cost Schedule Of Sale Of Subsidiary [Abstract] Schedule Of Sale Of Subsidiary [Abstract] Defined benefit plan contributions Defined Benefit Plan Contributions By Employer Anticipated contribution to fund the pension plan during the reminder of the fiscal year Defined Benefit Plan Expected Future Employer Contributions Remainder Of Fiscal Year Unfunded liability plans Defined Benefit Pension Plan Liabilities Noncurrent Liability for uncertain tax positions totaled Liability For Uncertain Tax Positions Noncurrent Fair Value Disclosures [Abstract] Fair value of financial instruments. Schedule Of Fair Value Of Financial Instruments [Table] Schedule Of Fair Value Of Financial Instruments [Table] Schedule Of Fair Value Of Financial Instruments [Table] Credit facility. Credit Facility [Member] Credit Facility [Member] Fair Value Of Financial Instruments [Line Items] Fair Value Of Financial Instruments [Line Items] Fair value of debt issued Debt Instrument Fair Value Fair value of note payable Notes Payable Fair Value Disclosure Cash held outside domestic territory. Cash held outside United States, principally in Netherlands, United Kingdom, China, and Canada Cash Held Outside Domestic Territory Litigation and settlement awarded from insurers. The weighted average cost per settled claim based on the number of claims settled and the amount paid in aggregate for asbestos related claims. Cumulative settlement payments for cases involving asbestos-related claims Litigation Settlement Amount Awarded From Other Party Cumulative settlement payments made for cases involving asbestos-related claims with all legal fees other than corporate counsel expenses Litigation And Settlement Awarded From Insurers Average cost per settled claim excluding legal fees Average Cost Per Settled Claim Number of claims pending Loss Contingency Pending Claims Number Number of new cases filed Loss Contingency New Claims Filed Number Number of cases dismissed Loss Contingency Claims Dismissed Number Number of cases settled Loss Contingency Claims Settled Number Assessment regarding Loss contingency impact Description Loss Contingency Managements Assessment And Process Schedule Of Segment Reporting Information By Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] CECO Group Inc. CECO Group, Inc. [Member] C E C O Group Inc [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of reportable segments Number Of Reportable Segments Consolidation Items Consolidation Items [Axis] Consolidation Items Consolidation Items [Domain] Corporate reconciling items and eliminations. Corporate and Other [Member] Corporate Reconciling Items And Eliminations [Member] Industrial solutions segment. Industrial Solutions Segment [Member] Industrial Solutions Segment [Member] Fluid handling solutions segment. Fluid Handling Solutions Segment [Member] Fluid Handling Solutions Segment [Member] Inter-segment Elimination [Member] Intersegment Elimination [Member] Income from Operations Corporate and Other [Member] Corporate Non Segment [Member] Property and equipment additions Property Plant And Equipment Additions Identifiable Assets Operating Segments [Member] Operating Segments [Member] Subsegments Consolidation Items Subsegments Consolidation Items [Axis] Subsegments Consolidation Items Subsegments Consolidation Items [Domain] Intra - Segment Sales [Member] Intersubsegment Eliminations [Member] Corporate and Other [Member] Corporate And Other [Member] Corporate And Other Inter-Segment Sales [Member] Major Customers [Axis] Customer Name Of Major Customer [Domain] Industrial inter segment sales. Industrial Inter-Segment Sales [Member] Industrial Inter Segment Sales [Member] Energy Inter Segment Sales [Member] Energy Inter-Segment Sales [Member] Energy Inter Segment Sales [Member] Fluid Handling Filtration inter segment sales. Fluid Inter-Segment Sales [Member] Fluid Handling Filtration Inter Segment Sales [Member] Corporate and other Inter segment sales. Corporate And Other Inter-Segment Sales [Member] Corporate And Other Inter Segment Sales [Member] Proceeds from divestiture of businesses gross. Disposal group including discontinued operation transaction costs. Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table] Disposal Group Name Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Axis] Disposal Group Name Disposal Groups Including Discontinued Operations Name [Domain] Strobic Air Corporation. Strobic Air Corporation [Member] Strobic Air Corporation [Member] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Definite-Lived Intangible Assets [Member] Finite Lived Intangible Assets [Member] Indefinite-Lived Intangible Assets [Member] Indefinitelived Intangible Assets [Member] Keystone Filter Brand. Keystone Filter [Member] Keystone Filter Brand [Member] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] Sale price, subject to post-close purchase price adjustments Proceeds From Divestiture Of Businesses Gross Estimated gain on disposal Net proceeds after adjustments Proceeds From Divestiture Of Businesses Net assets disposed Assets Of Disposal Group Including Discontinued Operation Transaction-related cost Disposal Group Including Discontinued Operation Transaction Costs Goodwill Disposal Group Including Discontinued Operation Goodwill1 Intangible assets Disposal Group Including Discontinued Operation Intangible Assets Noncurrent Net sales Disposal Group Including Discontinued Operation Revenue Income from operations Discontinued Operation Income Loss From Discontinued Operation Before Income Tax Consideration receivable from divestiture Disposal Group Including Discontinued Operation Consideration