Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Finite-Lived Intangible Assets, Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Total Lease, Liability, Payments, Year Three Total Lease, Liability, Payments, Year Three Total Lease, Liability, Payments, Year Three Significant Accounting Policies [Text Block] Significant Accounting Policies [Text Block] Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Statistical Measurement [Domain] Statistical Measurement [Domain] Borrowings of debt Proceeds from Issuance of Long-Term Debt and Capital Securities, Net Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Business Combination [Abstract] Business Combination [Abstract] Lessee, Operating Lease, Liability, Payments, Due after Year Five Lessee, Operating Lease, Liability, to be Paid, after Year Five Fixed Charge Coverage Ratio Fixed Charge Coverage Ratio Fixed Charge Coverage Ratio Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Business Combination, Recognized Liability Assumed, Liability, Current Business Combination, Recognized Liability Assumed, Liability, Current Award Timing Predetermined Award Timing Predetermined [Flag] Defined Benefit Plan, Funded Percentage Defined Benefit Plan, Funded Percentage Related Party Transaction [Axis] Related Party Transaction [Axis] Business Combination, Goodwill, Expected Tax Deductible, Amount Business Combination, Goodwill, Expected Tax Deductible, Amount Deferred Tax Assets, Investment in Subsidiaries Deferred Tax Assets, Investment in Subsidiaries Entity File Number Entity File Number Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Total Lease, Liability Total Lease, Liability Total Lease, Liability Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Income (Loss) from Equity Method Investments Income (Loss) from Equity Method Investments Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Leases [Abstract] Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Machinery and Equipment, Gross Machinery and Equipment, Gross Redeemable Noncontrolling Interest, Equity, Redemption Value Redeemable Noncontrolling Interest, Equity, Redemption Value Goodwill [Line Items] Goodwill [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Period Increase (Decrease), Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Period Increase (Decrease), Weighted Average Exercise Price Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Earnings (loss) per share, basic Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Related Party Transactions Disclosure [Text Block] Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Common Stock, Capital Shares Reserved for Future Issuance Common Stock, Capital Shares Reserved for Future Issuance Revenue from External Customers by Products and Services [Table Text Block] Revenue from Contract with Customer [Text Block] Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Deferred Tax Assets, Gross Deferred Tax Assets, Gross Unbilled Receivables, Current Unbilled Receivables, Current Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Amount Other Other Assets, Miscellaneous, Noncurrent Adjustment to Compensation, Amount Adjustment to Compensation Amount Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Non-cash compensation Share-Based Payment Arrangement, Noncash Expense Finance Lease, Liability, Payments, Due Year Three Finance Lease, Liability, to be Paid, Year Three Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest [Table] Proceeds from sale of assets Proceeds from Sale of Productive Assets Cash and Cash Equivalents, Policy Cash and Cash Equivalents, Policy [Policy Text Block] Grantee Status [Domain] Grantee Status [Domain] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Debt Securities, Trading, and Equity Securities, FV-NI Debt Securities, Trading, and Equity Securities, FV-NI Payments to Acquire Equity Method Investments Payments to Acquire Equity Method Investments Payments to Acquire Equity Method Investments Total stockholders' equity Stockholders' Equity Attributable to Parent, Beginning Balance Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Share-based Payment Arrangement, Expense Share-Based Payment Arrangement, Expense Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment [Table Text Block] Common Stock, Shares Authorized Common Stock, Shares Authorized Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Total liabilities and stockholders' equity Liabilities and Equity Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Line of Credit Facility, Interest Rate at Period End Line of Credit Facility, Interest Rate at Period End Total Lease, Liability, Payments, Due After Year Five Total Lease, Liability, Payments, Due After Year Five Total Lease, Liability, Payments, Due After Year Five Concentration Risk, Credit Risk, Policy Concentration Risk, Credit Risk, Policy [Policy Text Block] State and Local Jurisdiction [Member] State and Local Jurisdiction [Member] Cover page. Cover [Abstract] Deferred Tax Assets, Other Deferred Tax Assets, Other Maximum [Member] Maximum [Member] Finite-Lived Intangible Asset, Useful Life Finite-Lived Intangible Asset, Useful Life Equity Method Investment [Table] Equity Method Investment [Table] Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest Accounting Policies [Abstract] Accounting Policies [Abstract] Revenue Recognition and Deferred Revenue [Abstract] Revenue Recognition and Deferred Revenue [Abstract] Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Restricted Stock [Member] Restricted Stock [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation 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] Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Treasury Stock, Common Treasury Stock, Common [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Operating Lease, Liability Operating Lease, Liability Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Business Combination [Text Block] Business Combination [Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Finance Lease, Right-of-Use Asset, Amortization Finance Lease, Right-of-Use Asset, Amortization Entity Shell Company Entity Shell Company Other non-current liabilities Other Liabilities, Noncurrent Fixed Charge Coverage Ratio, C Fixed Charge Coverage Ratio, Maximum Fixed Charge Coverage Ratio, Maximum Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Self Insurance Reserve Self Insurance Reserve [Policy Text Block] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Goodwill impairment expense Goodwill, Impairment Loss Schedule of Cash Flow, Supplemental Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Accounts payable and accrued expenses Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Payments for Repurchase of Redeemable Noncontrolling Interest Payments for Repurchase of Redeemable Noncontrolling Interest Payments for Repurchase of Redeemable Noncontrolling Interest Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Lessee, Operating Lease, Liability, Payments, Due Year Three Lessee, Operating Lease, Liability, to be Paid, Year Three Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Line of Credit Facility [Table] Line of Credit Facility [Table] Other non-current liabilities Increase (Decrease) in Other Noncurrent Liabilities Name Measure Name Gulf Island Gulf Island [Member] Gulf Island Current operating lease liabilities Operating Lease, Liability, Current Finance Lease, Interest Expense Finance Lease, Interest Expense Software and Software Development Costs [Member] Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Intangible Assets, Net (Including Goodwill) Intangible Assets, Net (Including Goodwill) Increase in Unrecognized Tax Benefits is Reasonably Possible Increase in Unrecognized Tax Benefits is Reasonably Possible Award Timing Method Award Timing Method [Text Block] Furniture and Fixtures [Member] Furniture and Fixtures [Member] Award Type [Axis] Award Type [Axis] Business Combination, Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] Total assets Assets Investment, Name [Domain] Investment, Name [Domain] Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Finite-Lived Intangible Asset, Expected Amortization, Year One Trading Symbol Trading Symbol Lessee, Operating Lease, Liability, Payments, Due Year Four Lessee, Operating Lease, Liability, to be Paid, Year Four Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Finance lease payment Proceeds from (Repayments of) Other Long-Term Debt Income Tax, Policy Income Tax, Policy [Policy Text Block] Issuances under compensation plans, shares Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town Noncash or Part Noncash Acquisition, Other Liabilities Assumed Noncash or Part Noncash Acquisition, Other Liabilities Assumed Custom Power Solutions [Member] Custom Power Solutions [Member] Custom Power Solutions [Member] Finance Lease, Weighted Average Discount Rate, Percent Finance Lease, Weighted Average Discount Rate, Percent Debt Securities, Trading, Unrealized Gain (Loss) Debt Securities, Trading, Unrealized Gain (Loss) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Deferred Tax Assets, Net of Valuation Allowance Deferred Tax Assets, Net of Valuation Allowance Noncontrolling Interest Policy Noncontrolling Interest Policy [Policy Text Block] Noncontrolling Interest Policy Inventory Disclosure [Text Block] Inventory Disclosure [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Noncontrolling Interest, Decrease from Deconsolidation Noncontrolling Interest, Decrease from Deconsolidation Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy Credit Loss, Financial Instrument [Policy Text Block] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Business Combination, Consideration Transferred Business Combination, Consideration Transferred Finite-Lived Intangible Assets, Amortization Expense, Year Four Finite-Lived Intangible Asset, Expected Amortization, Year Four Entity Emerging Growth Company Entity Emerging Growth Company Finance Lease, Liability, Payments, Due Year One Finance Lease, Liability, to be Paid, Year One Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Weighted Average Remaining Lease Term Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Accrued Insurance, Current Accrued Insurance, Current Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Income Tax Examination [Line Items] Income Tax Examination [Line Items] Equity Method Investments Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Business Combination [Domain] Business Combination [Domain] Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Finance Lease, Liability, Undiscounted Excess Amount Finance Lease, Liability, Undiscounted Excess Amount Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding Bad debt expense Accounts Receivable, Credit Loss Expense (Reversal) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Deferred Tax Asset, Tax Deferred Expense, Reserve and Accrual, Accounts Receivable, Allowance for Credit Loss Property, Plant and Equipment, Policy Property, Plant and Equipment, Policy [Policy Text Block] PEO PEO [Member] Tontine Tontine [Member] Tontine Liquidity Liquidity Liquidity Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table Text Block] Debt Securities, Trading Debt Securities, Trading Acquiree, Greiner Acquiree, Greiner [Member] Acquiree, Greiner Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Fair Value, Net Asset (Liability) Fair Value, Net Asset (Liability) Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Options exercised Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Deferred Tax Liabilities, Property, Plant and Equipment Deferred Tax Liabilities, Property, Plant and Equipment Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Intangible Assets, Finite-Lived, Policy Intangible Assets, Finite-Lived, Policy [Policy Text Block] Retained Earnings [Member] Retained Earnings [Member] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Income Tax Authority [Axis] Income Tax Jurisdiction [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date CASH, CASH EQUIVALENTS and RESTRiCTED CASH, beginning of period CASH, CASH EQUIVALENTS and RESTRICTED CASH, end of period Cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Stockholders' Equity, Period Increase (Decrease) Stockholders' Equity, Period Increase (Decrease) Investments, Fair Value Disclosure Investments, Fair Value Disclosure Repayments of debt Repayment of Long-Term Debt, Long-Term Lease Obligation, and Capital Security Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill) Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross Parent Parent [Member] Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Business Combination [Table] Business Combination [Table] Financial and Nonfinancial Liabilities, Fair Value Disclosure Liabilities, Fair Value Disclosure Loss Contingency Accrual, Insurance-related Assessment, Discount Rate Loss Contingency Accrual, Insurance-related Assessment, Discount Rate Prepaid expenses and other current assets Increase (Decrease) in Other Current Assets Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Goodwill, Acquired During Period Goodwill, Acquired During Period Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill, Less Noncontrolling Interest Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill, Less Noncontrolling Interest Issuance of shares Proceeds from Stock Options Exercised City Area Code City Area Code Cash received (paid) in conjunction with business combinations Cash received (paid) in conjunction with business combinations Payments to Acquire Businesses, Net of Cash Acquired Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Building and Building Improvements [Member] Building and Building Improvements [Member] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Deferred Tax Assets, Goodwill and Intangible Assets Deferred Tax Assets, Goodwill and Intangible Assets Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Buildings and Improvements, Gross Buildings and Improvements, Gross Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Total Lease, Liability, Payments, Year Five Total Lease, Liability, Payments, Year Five Total Lease, Liability, Payments, Year Five Related Party Transactions [Abstract] Related Party Transactions [Abstract] Equity Method Investments and Joint Ventures [Abstract] Noncontrolling Interest, Period Increase (Decrease) Noncontrolling Interest, Period Increase (Decrease) Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Preferred Stock, Par or Stated Value Per Share Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Business Combination, Recognized Asset Acquired, Other Asset, Current Lease, Cost Lease, Cost Equity Securities Equity Securities, FV-NI Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Goodwill Goodwill, beginning Goodwill, ending Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Lease, Cost Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Depreciation Depreciation Line of Credit Facility, Covenant Terms, Minimum Liquidity Amount Line of Credit Facility, Covenant Terms, Minimum Liquidity Amount Line of Credit Facility, Covenant Terms, Minimum Liquidity Amount Finance Lease, Liability, Payments, Due Year Four Finance Lease, Liability, to be Paid, Year Four Deferred Federal Income Tax Expense (Benefit) Deferred Federal Income Tax Expense (Benefit) Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Decrease (increase) in noncontrolling interest Noncontrolling Interest, Change in Redemption Value Noncontrolling Interest, Change in Redemption Value Noncontrolling Interest, Change in Redemption Value Auditor Name Auditor Name Auditor Information [Abstract] Auditor Information [Abstract] Auditor Information Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Trade Accounts Receivable Trade Accounts Receivable [Member] Total Lease, Liability, Payments Due Total Lease, Liability, Payments Due Total Lease, Liability, Payment, Due Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Compensation and Employee Benefit Plans [Text Block] Compensation and Employee Benefit Plans [Text Block] Business Combination, Recognized Asset Acquired, Inventory, Current Business Combination, Recognized Asset Acquired, Inventory, Current Loans Payable Loans Payable Total Lease, Liability, Undiscounted Excess Amount Total Lease, Liability, Undiscounted Excess Amount Total Lease, Liability, Undiscounted Excess Amount Business Combination, Recognized Asset Acquired, Receivable, Current Business Combination, Recognized Asset Acquired, Receivable, Current Goodwill, Impaired, Accumulated Impairment Loss Goodwill, Impaired, Accumulated Impairment Loss Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province Marketable Securities, Policy Marketable Securities, Policy [Policy Text Block] Cumulative Effect of New Accounting Principle Cumulative Effect of New Accounting Principle Cumulative Effect of New Accounting Principle Total current liabilities Liabilities, Current Individual: Individual [Axis] Defined Contribution Plan, Cost Defined Contribution Plan, Cost Fair Value of Financial Instruments, Policy Fair Value of Financial Instruments, Policy [Policy Text Block] Equity Method Investment, Aggregate Cost Equity Method Investment, Aggregate Cost Income Tax Authority [Domain] Income Tax Jurisdiction [Domain] Lessee, Finance Leases Lessee, Finance Leases [Text Block] Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Document Annual Report Document Annual Report Entities [Table] Entities [Table] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Single Family Contracts [Member] Single Family Contracts [Member] Single Family Type Customer Contracts Document Fiscal Year Focus Document Fiscal Year Focus Operating right of use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Subsidiary, Ownership Percentage, Noncontrolling Owner Executive Savings Plan assets Deferred Compensation Plan Assets Entity Interactive Data Current Entity Interactive Data Current Operating Lease, Cost Operating Lease, Cost Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Performance Obligation Next 12 Months Performance Obligation Next 12 Months Performance Obligation Next 12 Months Multi Family and Other [Member] Multi Family and Other [Member] Multi Family and Other Customer Contract Type Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Options exercised, shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Deferred Tax Assets, Valuation Allowance Deferred Tax Assets, Valuation Allowance Equity [Abstract] Equity [Abstract] Revenue from Contract with Customer Revenue from Contract with Customer [Policy Text Block] Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Segment Reporting Disclosure [Text Block] Segment Reporting Disclosure [Text Block] Schedule of Goodwill [Table] Goodwill [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Deferred Tax Assets, Operating Loss Carryforwards Deferred Tax Assets, Operating Loss Carryforwards Current Federal Tax Expense (Benefit) Current Federal Tax Expense (Benefit) Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Ownership [Domain] Ownership [Domain] Distribution to noncontrolling interests Proceeds from (Payments to) Noncontrolling Interests Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Business Combination, Contingent Consideration, Liability Business Combination, Contingent Consideration, Liability Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Stock Repurchase Program, Number of Shares Authorized to be Repurchased Share Repurchase Program, Authorized, Number of Shares Finance Lease, Liability, Payments, Due Year Two Finance Lease, Liability, to be Paid, Year Two Amortization of Intangible Assets Amortization of Intangible Assets Lessee, Leases Lessee, Leases [Policy Text Block] Goodwill and Intangible Assets, Goodwill, Policy Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Selling, general and administrative expenses Selling, General and Administrative Expense Fixed Charge Coverage Ratio, Minimum Fixed Charge Coverage Ratio, Minimum Fixed Charge Coverage Ratio, Minimum Fixed Charge Coverage Ratio, Minimum Deferred tax assets Deferred Income Tax Assets, Net Stock Repurchased During Period, Value Stock Repurchased During Period, Value Purchases of property and equipment Capital expenditures Payments to Acquire Productive Assets Depreciation and amortization Depreciation, Depletion and Amortization Redeemable Noncontrolling Interest [Line Items] Redeemable Noncontrolling Interest [Line Items] Other non-current assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key Accrued insurance liabilities Accrued Insurance PEO Name PEO Name Revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Inventory, Finished Goods, Gross Inventory, Finished Goods, Gross Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fixed-price Contract [Member] Fixed-Price Contract [Member] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Communications [Member] Communications [Member] Communications [Member] Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Business Combination, Contingent Consideration, Liability, Noncurrent Business Combination, Contingent Consideration, Liability, Noncurrent Finance Lease, Liability Finance Lease, Liability Arrangement Duration Trading Arrangement Duration Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Lessee, Total Lease, Liability, Payments, Due Year One Lessee, Total Lease, Liability, Payments, Due in Next Twelve Months Lessee, Total Lease, Liability, Payments, Due in Next Twelve Months Billings in excess of costs and estimated earnings Contract with Customer, Liability, Current Segments [Axis] Segments [Axis] Owner Owner [Member] Owner Exercise Price Award Exercise Price Business Combination, Series of Individually Immaterial Business Combinations Business Combination, Series of Individually Immaterial Business Combinations [Member] Entity Filer Category Entity Filer Category Class of Stock [Domain] Class of Stock [Domain] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Long-term debt Long-Term Debt, Excluding Current Maturities Underlying Security Market Price Change Underlying Security Market Price Change, Percent Finite-Lived Intangible Assets, Amortization Expense, Year Three Finite-Lived Intangible Asset, Expected Amortization, Year Three Operating Loss Carryforwards Attributable To Goodwill Amortization Operating Loss Carryforwards Attributable To Goodwill Amortization Operating Loss Carryforwards Attributable To Goodwill Amortization Payments for Rent Payments for Rent Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Fair Value Disclosures [Text Block] Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] Finite-Lived Intangible Assets, Gross Finite-Lived Intangible Assets, Gross Debt and Equity Securities, Unrealized Gain (Loss) Debt and Equity Securities, Unrealized Gain (Loss) Minimum payments for leases not yet commenced Minimum payments for leases not yet commenced Minimum payments for leases not yet commenced Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address 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Assets Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Text Block] Use of Estimates, Policy Use of Estimates, Policy [Policy Text Block] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Finance Lease, Interest Payment on Liability Finance Lease, Interest Payment on Liability Entity Public Float Entity Public Float Construction in Progress, Gross Construction in Progress, Gross Jett Texas Jett Texas [Member] Jett Texas Schedule of Goodwill [Table Text Block] Schedule of Goodwill [Table Text Block] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Subsequent Event, Description Subsequent Event, Description Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Phantom Share Units, Employee PSUs Phantom Share Units, Employee PSUs [Member] Phantom Share Units, Employee PSUs Security Exchange Name Security Exchange Name Related Party Transaction, Purchases from Related Party Related Party Transaction, Purchases from Related Party Commercial and Industrial [Member] Commercial and Industrial [Member] Commercial and Industrial [Member] Controlling Shareholder [Text Block] Controlling Shareholder [Text Block] Controlling Shareholder [Text Block] Inventory, Raw Materials, Gross Inventory, Raw Materials, Gross Total liabilities Liabilities Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount Finance Lease, Liability, Payments, Due Year Five Finance Lease, Liability, to be Paid, Year Five Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Purchase Commitment, Remaining Minimum Amount Committed Purchase Commitment, Remaining Minimum Amount Committed Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent Stock Repurchased During Period, Shares Stock Repurchased During Period, Shares Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Business Combination, Date of Acquisition Agreement Business Combination, Date of Acquisition Agreement Line of Credit Facility, Covenant Terms, Minimum Liquidity Excess Availability Percentage Line of Credit Facility, Covenant Terms, Minimum Liquidity Excess Availability Percentage Line of Credit Facility, Covenant Terms, Minimum Liquidity Excess Availability Percentage Trademarks and Trade Names [Member] Trademarks and Trade Names [Member] Phantom Share Units (PSUs) [Member] Phantom Share Units (PSUs) [Member] Time-and-materials Contract [Member] Time-and-Materials Contract [Member] Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent Statement [Line Items] Statement [Line Items] Line of Credit Facility, Covenant Terms, Minimum Liquidity Percentage Line of Credit Facility, Covenant Terms, Minimum Liquidity Percentage Line of Credit Facility, Covenant Terms, Minimum Liquidity Percentage Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and Cash Equivalent Cash and Cash Equivalent Subsequent Event [Line Items] Subsequent Event [Line Items] Increase (Decrease) in Deferred Income Taxes Increase (Decrease) in Deferred Income Taxes Common Stock [Member] Common Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Construction Contracts [Member] Customer Contracts [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Summary of Income Tax Contingencies [Table Text Block] Summary of Income Tax Contingencies [Table Text Block]