Intangible assets, accumulated amortization Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Changes in net contract assets (liabilities) Increase decrease in Net Contract Assets Liabilities The amount of increase(decrease)in net contract assets(liabilities) during the year. Award Timing Predetermined Award Timing Predetermined [Flag] Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Stock compensation excess tax benefits Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Percent Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Tabular List, Table Tabular List [Table Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Finance Lease Obligations Finance Lease, Liability [Abstract] Bonds outstanding Guarantor Obligations, Maximum Exposure, Undiscounted Number of equity stock based compensation plans (plan) Number Of Equity Stock Based Compensation Represents the number of equity stock based compensation. Adjustment to Compensation: Adjustment to Compensation [Axis] Percentage of capital stock from direct foreign subsidiaries Percentage of Capital Stock From Direct Foreign Subsidiaries Percentage of capital stock from direct foreign subsidiaries pledged as collateral for a debt. Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Revenue Recognition Revenue from Contract with Customer [Text Block] Stock-based awards Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Kern County Electrical Workers Pension Fund Kern County Electrical Workers Pension Fund [Member] Kern County Electrical Workers Pension Fund Joint Venture Corporate Joint Venture [Member] Intangible Asset, Indefinite-Lived [Table] Intangible Asset, Indefinite-Lived [Table] Current income tax expense Current Income Tax Expense (Benefit) Percentage of potential target shares awarded Share Based Compensation Arrangement By Share Based Payment Award Potential Payout As Percentage Of Target Shares The percentage of target shares, an employee can earn, under the plan. Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk Concentration Risk, Percentage Multiemployer Plans, Pension Pension Plan [Member] Remaining performance obligations, percent Revenue, Remaining Performance Obligation, Percentage Prepaid expenses and other assets Increase (Decrease) in Other Operating Assets Payroll and incentive compensation Accrued Payroll And Incentive Compensation Current Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided, including obligations incurred and payable for incentive compensation awarded to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Consolidation Consolidation, Policy [Policy Text Block] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Stock Options Share-Based Payment Arrangement, Option [Member] Operating lease liabilities Deferred Tax Assets Operating Lease Liabilities A amount of deferred tax assets operating lease liabilities Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Income taxes payments Income Taxes Paid Grantee Status [Domain] Grantee Status [Domain] Percent Effective Income Tax Rate Reconciliation, Percent [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Intrinsic value of common stock at the time of vesting Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Total shareholders’ equity Balance, beginning of period Balance, end of period Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Schedule of property and equipment Property, Plant and Equipment [Table Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized IBEW Local 769 Management Pension Plan A Ibew Local769 Management Pension Plan [Member] Ibew Local 769 Management Pension Plan Member Concentrations Concentration Risk, Credit Risk, Policy [Policy Text Block] State and Local Jurisdiction State and Local Jurisdiction [Member] Cover [Abstract] Maximum Maximum [Member] Estimated useful life Finite-Lived Intangible Asset, Useful Life Net Carrying Amount Finite-Lived Intangible Assets, Net Number of subsidiaries which incurred a cumulative pre-tax loss Cumulative Pre-Tax Loss Incurred, Number Of Subsidiaries Cumulative Pre-Tax Loss Incurred, Number Of Subsidiaries Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Lease amortization period Lessee, Operating Lease, Remaining Lease Term Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Letter of Credit Letter of Credit [Member] Insurance expense General Insurance Expense Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Current portion of operating lease obligations Operating lease obligations Less: current portion of operating lease obligations Operating Lease, Liability, Current Interest on lease liabilities Finance Lease, Interest Expense Schedule of income tax paid Schedule of Components of Income Tax Paid [Table Text Block] Schedule of Components of Income Tax Paid Document Fiscal Period Focus Document Fiscal Period Focus San Mateo Country Electrical Construction Industry Retirement Plan San Mateo Country Electrical Construction Industry Retirement Plan [Member] San Mateo Country Electrical Construction Industry Retirement Plan Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Increase (decrease) in consolidated gross margin Cost Estimate Revision Gross Margin Increase Decrease Percentage Percentage of increase (decrease) cost estimate revision gross margin. Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Schedule of goodwill and intangible assets Schedule of Intangible Assets and Goodwill [Table Text Block] Stock issued under compensation plans, net (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town Weighted-average discount rate – finance leases Finance Lease, Weighted Average Discount Rate, Percent Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Total deferred income tax assets Deferred Tax Assets, Net of Valuation Allowance Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Weighted-average remaining lease term – finance leases Finance Lease, Weighted Average Remaining Lease Term Equipment Note 10 Equipment Note Ten [Member] Equipment Note Ten Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Repayments under revolving lines of credit Repayments of Lines of Credit 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] Indefinite-lived Intangible Assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Electrical construction Market Type Electrical Construction [Member] Financing component Finance Lease, Liability, Undiscounted Excess Amount Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Insurance Claims Insurance Claims [Member] Labor employees covered by collective bargaining agreements Workforce Subject to Collective-Bargaining Arrangements [Member] Accounts Receivable Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of revenue by contact and market type Disaggregation of Revenue [Table Text Block] Current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Accrued income taxes Accrued Income Taxes, Current 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] Schedule of estimated future intangible asset amortization expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Prepaid expenses and other current assets Total prepaid expense and other current assets Prepaid Expense and Other Assets, Current Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Income tax expense Income tax expense Income Tax Expense (Benefit) Interest rate margin Debt Instrument, Basis Spread on Variable Rate Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Total property and equipment, gross Property, Plant and Equipment, Gross Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Number of equipment notes (equipment note) Debt Instrument Number Of Debt Instruments The number of debt instruments. Property and equipment, accumulated depreciation Less: accumulated depreciation and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Federal Income Tax Paid, Federal, after Refund Received Buildings and improvements 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] Profit Sharing and Thrift Employee Benefit Plan Profit Sharing And Thrift Employee Benefit Plan [Member] U.S. operating loss Deferred Tax Assets, Operating Loss Carryforwards, Domestic Other Adjustments Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) 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] Schedule of allowance for doubtful accounts Schedule Of Roll Forward Activity Of Allowance For Doubtful Accounts [Table Text Block] Tabular disclosure of the roll forward activity of allowance for doubtful accounts. Non-U.S. operating loss Deferred Tax Assets, Operating Loss Carryforwards, Foreign Net cash flows provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Term (years) Debt instrument term Debt Instrument, Term Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Estimated Useful Life in Years Property, Plant and Equipment, Useful Life Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Multiemployer Plan [Table] Multiemployer Plan [Table] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation and amortization of property and equipment Depreciation and amortization expense Depreciation 2029 Lease, Liability, To Be Paid, Year Four Lease, Liability, To Be Paid, Year Four 2029 Finance Lease, Liability, to be Paid, Year Four Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Number of business segments (segment) Number of Reportable Segments Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Assets Servicing Asset [Abstract] Advertising Advertising Cost [Policy Text Block] Entity Address, State or Province Entity Address, State or Province Payment of principal obligations under finance leases Finance Lease, Principal Payments Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Total current liabilities Liabilities, Current Individual: Individual [Axis] Contributions to benefit plans Defined Contribution Plan, Cost Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Gross decreases in current period tax positions Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions Right-of-use asset obtained in exchange for new finance lease obligations Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Document Annual Report Document Annual Report Non-performance Letters Of Credit Nonperformance Letters Of Credit [Member] Contract Performance Obligations Contract Performance Obligations [Member] National Electrical Benefit Fund National Electrical Benefit Fund [Member] National Electrical Benefit Fund Member Time-vested stock awards Time Vested Stock Awards [Member] Time Vested Stock Awards Member Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Line Items] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Components Of Deferred Tax Assets And Liabilities [Table] Components Of Deferred Tax Assets And Liabilities [Table] Components Of Deferred Tax Assets And Liabilities Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] 2027 Finance Lease, Liability, to be Paid, Year Two Other assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of remaining principal payments for long term obligations Schedule of Maturities of Long-Term Debt [Table Text Block] 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] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Distribution Market Type Distribution [Member] Summary of supplemental cash flow information Schedule Of Lease Supplemental Cash Flow And Other Disclosures [Table Text Block] Tabular disclosure of lease supplemental cash flow and other disclosures. Defined Benefit Plan [Table] Defined Benefit Plan [Table] Total right-of-use lease assets Operating and Finance Lease Right of Use Asset Represent the operating and finance lease right-of-use asset. Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Contract liabilities, net Contract liabilities, net Contract liabilities, net Contract with Customer, Liability, Current Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Board of Trustees IBEW Local 40 - NECA Variable Annuity Pension Plan Board of Trustees IBEW Local 40 - NECA Variable Annuity Pension Plan [Member] Board of Trustees IBEW Local 40 - NECA Variable Annuity Pension Plan U.S federal statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Contingencies Excluding Wildfire and Health Insurance Contingencies Excluding Wildfire And Health Insurance [Member] Contingencies Excluding Wildfire and Health Insurance [Member] Adjusted for performance above target Performance Share Above Target, Net [Member] Performance Share Above Target, Net Long-term debt Long-term principal obligations Long-Term Debt, Excluding Current Maturities 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Three Earned (forfeited) for performance above or below target (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Period Increase (Decrease) Unit price Unit Price Contract [Member] Deferred income tax assets: Deferred Tax Assets, Net [Abstract] Gross Carrying Amount Finite-Lived Intangible Assets, Gross 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] Current portion of accrued self-insurance Self Insurance Reserve, Current Entity Address, Address Line One Entity Address, Address Line One Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Accounts receivable, allowance Less: allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Non-deductible meals and entertainment Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Percent Shares repurchased related to tax withholding for stock-based compensation (in shares) Shares repurchased related to tax withholding for stock-based compensation (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Total minimum lease payments Lease, Liability, To Be Paid Lease, Liability, To Be Paid U.S. State rate true up Income Tax Reconciliation, Change In State and Local Tax Rate, True Up, Amount Income Tax Reconciliation, Change In State and Local Tax Rate, True Up, Amount Fair Value as of Grant Date Award Grant Date Fair Value Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Schedule of total debt Schedule of Long-Term Debt Instruments [Table Text Block] Granted (in shares) Granted at target (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Relationship to Entity [Domain] Title and Position [Domain] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unrecognized stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Deferred income taxes Deferred Income Taxes and Tax Credits Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Weighted- Average Remaining Contractual Term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Non-PEO NEO Non-PEO NEO [Member] Aggregate Intrinsic Value (in thousands) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Letters of credit outstanding Letters of Credit Outstanding, Amount Schedule of prepaid expense and other current assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Total liability for unrecognized tax benefits Unrecognized Tax Benefit Including Tax Interest Accrued The gross amount of unrecognized tax benefits, including interest, pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. 2027 Lease, Liability, To Be Paid, Year Two Lease, Liability, To Be Paid, Year Two Eighth District Electrical Pension Fund Annuity Plan Eighth District Electrical Pension Fund Annuity Plan [Member] Eighth District Electrical Pension Fund Annuity Plan Member Land Land [Member] Equity Award [Domain] Award Type [Domain] 2026 Lessee, Operating Lease, Liability, to be Paid, Year One Equity Awards Adjustments Equity Awards Adjustments [Member] Advertising cost Advertising Expense Other non-cash items Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Uncertain tax positions Effective Income Tax Rate Reconciliation, Tax Settlement, Other, Percent Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Canada CANADA Compensation Amount Outstanding Recovery Compensation Amount Deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenues recognized during period Contract with Customer, Liability, Revenue Recognized Retirement Plan Type [Domain] Retirement Plan Type [Domain] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Tax differential on foreign earnings Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Gross Carrying Amount Goodwill, Gross Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] 2026 Long-Term Debt, Maturity, Year One Adjusted for performance below target Performance Share Below Target, Net [Member] Performance Share Below Target, Net Total deferred income tax liabilities Deferred Tax Liabilities, Gross 2030 Long-Term Debt, Maturity, Year Five Performance awards Performance Shares [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Contract retention provision Contract with Customer Retention Provision The rate of retention provision on a contract with customer. Other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] IBEW Local Union 1249 Pension Fund IBEW Local Union 1249 Pension Fund [Member] IBEW Local Union 1249 Pension Fund Foreign currency translation, Accumulated Amortization Finite Lived Intangible Assets Foreign Currency Translation Gain (Loss), Adjusments Finite Lived Intangible Assets Foreign Currency Translation Gain (Loss), Adjusments Payment of principal obligations under equipment notes Repayments of Notes Payable Company Selected Measure Name Company Selected Measure Name Short termination notice of master service agreements Master Service Agreements, Term of Short Termination Notice Short termination notice of master service agreements ("MSAs"), in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact Debt Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Deferred income tax liabilities: Deferred Tax Liabilities, Net [Abstract] Operating cash flows used for operating leases Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Foreign Current Foreign Tax Expense (Benefit) Diluted (in shares) Weighted average common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Schedule of Contractors [Table] Schedule of Contractors [Table] n/a Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Less: retainage receivables Construction Contractor, Receivable, Retainage, Liability, Net Construction Contractor, Receivable, Retainage, Liability, Net Summary of the lease-related assets and liabilities Schedule of Supplemental Balance Sheet Information Related to Leases [Table Text Block] Schedule of supplemental balance sheet information related to leases. Foreign currency translation, Net Carrying Amount Finite Lived Intangible Assets Foreign Currency Translation Gain (Loss), Net of Adjustments Finite Lived Intangible Assets Foreign Currency Translation Gain (Loss), Net of Adjustments Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Interest and penalties charged or credited to income tax expense Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Contract revenue adjustment Deferred Tax Liabilities, Undistributed Foreign Earnings Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding State Current State and Local Tax Expense (Benefit) Document Transition Report Document Transition Report Net contract assets (liabilities) Net Contract Assets Liabilities The amount of net contract assets(liabilities) as at balance sheet period. Total minimum lease payments Finance Lease, Liability, to be Paid Preferred stock – $0.01 par value per share; 4,000,000 authorized shares; none issued and outstanding at December 31, 2025 and December 31, 2024 Preferred Stock, Value, Outstanding Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Income Taxes Income Tax Disclosure [Text Block] Balance at beginning of period Balance at end of period Accounts Receivable, Allowance for Credit Loss Borrowings under revolving lines of credit Proceeds from Lines of Credit Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] T&E Te Contract [Member] Weighted average price for stock repurchase (in dollars per share) Shares Acquired, Average Cost Per Share Document Type Document Type Schedule of assets allocation by segment Reconciliation of Assets from Segment to Consolidated [Table Text Block] Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Non-U.S. intangible assets — tax over book amortization Deferred Tax Liabilities, Goodwill And Intangible Assets, Foreign Intangible Assets Deferred Tax Liabilities, Goodwill And Intangible Assets, Foreign Intangible Assets Office equipment Office Equipment [Member] Revenue from Contract with Customer Revenue from Contract with Customer Benchmark [Member] Variable lease costs Variable Lease, Cost Contract revenues Revenue from Contract with Customer, Excluding Assessed Tax Effect of Change in Accounting Estimate, Type [Domain] Effect of Change in Accounting Estimate, Type [Domain] Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Share repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Balance at beginning of period Balance at end of period Loss Contingency Accrual Commitment fee on unused capacity Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount All other plans Other Pension, Postretirement and Supplemental Plans [Member] Intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Payments related to tax withholding for stock-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Current liabilities Current Liabilities, Current [Abstract] Term and Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Operating costs Operating Expenses Borrowings under line of credit Long-Term Line of Credit Balance, beginning of period (in shares) Balance, end of period (in shares) Shares, Outstanding Classification of Contract Assets and Liabilities Construction Contractor [Policy Text Block] Diluted (in dollars per share) Increase (decrease) in diluted earnings per common share (in dollars per share) Earnings Per Share, Diluted Bonus Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Bonuses Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount Accounts receivable, net of allowances of $934 and $1,129, respectively Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Debt refinancing costs Payments of Debt Restructuring Costs State Income Tax Paid, State and Local, after Refund Received Consolidation Items [Domain] Consolidation Items [Domain] Option to extend lease term (up to) Lessee Operating and Finance Leases Option to Extend Term Lessee, operating and finance leases, option to extend, term. Auditor Location Auditor Location Other equipment note Other Equipment Note [Member] Other Equipment Note Gross profit Gross Profit Right-of-use operating lease assets Deferred Tax Liability Right-of-Use Operating Lease Assets Deferred Tax Liability Right-of-Use Operating Lease Assets Letters of Credit, Discretional Letters Of Credit, Discretional [Member] Letters Of Credit, Discretional Settlement of stock repurchase program Stock Repurchased and Retired During Period, Value Domestic Tax Jurisdiction Domestic Tax Jurisdiction [Member] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Financing component Lessee, Operating Lease, Liability, Undiscounted Excess Amount Earned (forfeited) for performance above or below target (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instrument Other Than Option, Period Increase (Decrease), Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instrument Other Than Option, Period Increase (Decrease), Weighted Average Grant Date Fair Value Other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Income tax paid Income Taxes Paid, Net Schedule of net asset position for contracts in process Long-Term Contract or Program Disclosure [Table Text Block] 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Two Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Minimum lease payments required Total minimum lease payments Lessee, Operating Lease, Liability, to be Paid Subsidiaries Subsidiaries [Member] Property and equipment, net of accumulated depreciation of $413,962 and $387,223, respectively Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Schedule of other current liabilities Other Current Liabilities [Table Text Block] Trade names Trade Names [Member] Expiration Date Trading Arrangement Expiration Date Other liabilities Increase (Decrease) in Other Operating Liabilities 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Five Foreign currency translation Indefinite-Lived Intangible Assets, Foreign Currency Translation Gain (Loss) Numerator: Net Income (Loss) Attributable to Parent [Abstract] Financing component Lease, Liability, Undiscounted Excess Amount Lease, Liability, Undiscounted Excess Amount Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable, net Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status Receivables [Abstract] Receivables [Abstract] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Accrued self-insurance Self Insurance Reserve, Noncurrent U.S. federal statutory tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Gain on sale of property and equipment Gain on sale of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] State and local income taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Current portion of finance lease obligations Finance lease obligations Less: current portion of operating lease obligations Finance Lease, Liability, Current Interest expense Interest Expense, Operating and Nonoperating Current Fiscal Year End Date Current Fiscal Year End Date Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Changes in contract liabilities Increase (Decrease) in Payables to Customers U.S. State net operating loss true up Income Tax Reconciliation, State And Local, Net Operating Loss True Up, Amount Income Tax Reconciliation, State And Local, Net Operating Loss True Up, Amount Schedule of accounts receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Per Share Weighted- Average Grant Date Fair Value Per Share Weighted-Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Net Period [Domain] Net Period [Domain] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Top Ten Customers Top Ten Customers [Member] Top Ten Customers Member Balance at beginning of period Balance at end of period Unrecognized Tax Benefits Contract receivables Construction Contractor, Receivable, Excluding Contract Retainage, Year One Antidilutive securities excluded from computation of earnings (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted average number of common shares and potential common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] 2027 Long-Term Debt, Maturity, Year Two Other Commitments [Table] Other Commitments [Table] Lease Obligations Lessee, Operating Leases [Text Block] Net cash flows used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net asset position for contracts in process Net Costs And Estimated Earnings In Excess Of Billings Represents the net costs and estimated earnings in excess of billings on uncompleted contracts accounted for under the percentage-of-completion method. Measure: Measure [Axis] Contract retainages, net Construction Contractor, Receivable, Retainage, Asset, Net Construction Contractor, Receivable, Retainage, Asset, Net Laborers Local Union 158 Pension Fund Laborers Local Union 158 Pension Fund [Member] Laborers Local Union 158 Pension Fund Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Funds available to repurchase Share Repurchase Program, Remaining Authorized, Amount Contract costs Cost of Product and Service Sold Schedule of depreciation and amortization by segment Schedule Of Segment Reporting Information Related To Allocation Of Depreciation And Amortization By Segment [Table Text Block] Tabular disclosure of total depreciation and amortization for each reportable segment. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Grantee Status [Axis] Grantee Status [Axis] Less: reduction in (provision for) allowances Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Percent 2026 Lease, Liability, To Be Paid, One Year Lease, Liability, To Be Paid, One Year Outstanding, beginning of period (in dollars per share) Outstanding, end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Common stock, shares issued (in shares) Common Stock, Shares, Issued 2029 Long-Term Debt, Maturity, Year Four Weighted-average remaining lease term – operating leases Operating Lease, Weighted Average Remaining Lease Term Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Receivable for insurance claims in excess of deductibles Insurance Settlements Receivable, Noncurrent Total current obligations Less: current portion of operating lease obligations Lease Liability Current Amount of lease liability classified as current. Entity Public Float Entity Public Float Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount 2030 Lease, Liability, To Be Paid, Year Five Lease, Liability, To Be Paid, Year Five Loss Contingencies [Line Items] Loss Contingencies [Line Items] General Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Foreign Income Tax Paid, Foreign, after Refund Received Thereafter Lease, Liability, To Be Paid, After Year Five Lease, Liability, To Be Paid, After Year Five Goodwill Goodwill, Impaired, Accumulated Impairment Loss [Abstract] Acquisition of property and equipment for which payment is pending Capital Expenditures Incurred but Not yet Paid Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Costs and estimated earnings on uncompleted contracts Aggregate Costs Incurred On Uncompleted Contracts And Estimated Earnings Represents the aggregate of costs incurred on uncompleted contracts and estimated earnings. Purchase orders outstanding Purchase Commitment, Remaining Minimum Amount Committed Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Prepaid expenses Prepaid Expense, Current Other current liabilities Total other current liabilities Other Liabilities, Current Weighted average interest rate Line of Credit Facility, Interest Rate During Period Statement [Line Items] Statement [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Common Stock Common Stock [Member] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period National Electrical Annuity Plan National Electrical Annuity Plan [Member] National Electrical Annuity Plan 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 Weighted average dilutive securities (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Total non-current obligations Lease Liability Noncurrent Amount of lease liability classified as noncurrent. Statistical Measurement [Domain] Statistical Measurement [Domain] Self insurance reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Self Insurance Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Labor Force Concentration Risk Labor Force Concentration Risk [Member] Schedule of performance share award activity Schedule of Nonvested Performance-Based Units Activity [Table Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Warranty reserves Standard and Extended Product Warranty Accrual Total intangible assets, Gross Carrying Amount Intangible Assets, Gross (Excluding Goodwill) Leases [Abstract] Leases [Abstract] Notes Payable to Banks Notes Payable to Banks [Member] Audit Information [Abstract] Audit Information Unbilled revenue, net Unbilled revenue, net Unbilled Contracts Receivable Employees Employees [Member] Accounts payable Increase (Decrease) in Accounts Payable Contract assets, net of allowances of $534 and $422, respectively Contract assets, net Contract assets, net Contract with Customer, Asset, after Allowance for Credit Loss, Current Retirement Plan Name [Axis] Retirement Plan Name [Axis] Schedule of accrued short and long term insurance liabilities Schedule of Loss Contingencies by Contingency [Table Text Block] Shares repurchased related to tax withholding for stock-based compensation Shares repurchased related to tax withholding for stock-based compensation Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Contributions to Plan Multiemployer Plan, Employer Contribution, Cost Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Insurance Program Obligations Insurance Program Obligations [Member] Insurance Program Obligations Basic (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Total deferred income tax assets before valuation allowances Deferred Tax Assets, Gross Other comprehensive income (loss) Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Schedule of segment's internal financial reports Schedule of Segment Reporting Information, by Segment [Table Text Block] Remaining performance obligations Revenue, Remaining Performance Obligation, Amount 2028 Finance Lease, Liability, to be Paid, Year Three Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Loss Contingency Accrual [Roll Forward] Loss Contingency Accrual [Roll Forward] Stock based compensation expense Share-Based Payment Arrangement, Expense Contract Assets and Liabilities Long-Term Contracts or Programs Disclosure [Text Block] Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Current assets Assets, Current [Abstract] Total liabilities and shareholders’ equity Liabilities and Equity Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Change in foreign currency translation Allowance For Doubtful Accounts Receivable Foreign Currency Translation Adjustments Amount of foreign currency translation adjustments of accounts receivable charged against the allowance. Other deferred tax asset Deferred Tax Assets, Other Southern California IBEW-NECA Pension Trust Fund Southern California Ibew Neca Pension Trust Fund [Member] Represents the information pertaining to Southern California IBEW-NECA Pension Trust Fund. Schedule of future minimum operating lease payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Pay vs Performance Disclosure [Line Items] Net present value of minimum lease payments Operating Lease, Liability LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities Liabilities [Abstract] Amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization Other liabilities Other Liabilities, Noncurrent Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Current portion of long-term debt Less: current portion of long-term debt Less: current portion of equipment notes Long-Term Debt, Current Maturities Company Selected Measure Amount Company Selected Measure Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Name Measure Name Schedule of income before income taxes by geographical area Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Number of local unions (union) Number Of Local Unions Represents the number of local unions. Secured Debt Secured Debt [Member] Deferred income tax liabilities Deferred Income Tax Liabilities, Net Organization Consolidation and Presentation of Financial Statements [Table] Organization Consolidation and Presentation of Financial Statements [Table] Total debt Long-Term Debt Total assets Identifiable assets Assets Schedule of time-vested stock awards activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year One Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Geographical [Domain] Geographical [Domain] Income Taxes Income Tax, Policy [Policy Text Block] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Supplemental Cash Flow Information: Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract] Concentration Risk Type [Axis] Concentration Risk Type [Axis] 2028 Lease, Liability, To Be Paid, Year Three Lease, Liability, To Be Paid, Year Three 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Four Backlog Order or Production Backlog [Member] 2026 Finance Lease, Liability, to be Paid, Year One Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Right-of-use asset obtained in exchange for new operating lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Lease cost: Lease, Cost [Abstract] Document Financial Statement Error Correction Flag Document Financial Statement Error Correction [Flag] State and local income taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Net Carrying Amount Finite Lived Intangible Assets, Net, At Foreign Currency Translation Rate At Acquisition Date Finite Lived Intangible Assets, Net, At Foreign Currency Translation Rate At Acquisition Date Operating Lease Obligations Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Below market lease Leases, Acquired-in-Place, Market Adjustment [Member] Schedule of income tax expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Plan Name [Axis] Plan Name [Axis] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] PEO PEO [Member] Noncash investing activities: Noncash Investing and Financing Items [Abstract] Interest income Investment Income, Interest Intangible assets — tax over book amortization Deferred Tax Liabilities, Intangible Assets Union dues and benefits Accrued Union Dues And Benefit Carrying value as of the balance sheet date of the obligations incurred through that date and payable for union dues and benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Income Tax Paid, by Individual Jurisdiction [Line Items] Income Tax Paid, by Individual Jurisdiction [Line Items] United States UNITED STATES Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] U.S. State valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Property and equipment — tax over book depreciation Deferred Tax Liabilities, Property, Plant and Equipment Retained Earnings Retained Earnings [Member] Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Total Lease Obligations Total Lease Obligations [Abstract] Total Lease Obligations Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Beginning of period End of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Performance Guarantee Performance Guarantee [Member] Payroll, sales and other taxes Taxes Payable, Current 162(m) limitation Effective Income Tax Reconciliation, Section 162m Limitation, Amount Effective Income Tax Reconciliation, Section 162m Limitation, Amount Revenue recognized, related to change orders and claims included as contract price adjustments Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Estimate of Transaction Price, Change Orders And Claims Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Estimate of Transaction Price, Change Orders And Claims Intangible assets, net of accumulated amortization of $39,967 and $34,573, respectively Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill) Customer Concentration Risk Customer Concentration Risk [Member] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Term of master service agreements Master Service Agreements, Term Term of master service agreements ("MSAs"), in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Income Tax Paid, by Individual Jurisdiction [Table] Income Tax Paid, by Individual Jurisdiction [Table] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Schedule Of Intangible Assets And Goodwill [Line Items] Schedule Of Intangible Assets And Goodwill [Line Items] Schedule of contract assets and liabilities from contracts with customers Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Net deferred income taxes Deferred Tax Liabilities, Net Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Total lease cost Lease, Cost Goodwill Net Carrying Amount Goodwill Schedule of lease costs Lease, Cost [Table Text Block] Receivable for insurance claims in excess of deductibles Increase (Decrease) in Insurance Settlements Receivable Federal Deferred Federal Income Tax Expense (Benefit) Summary of the lease terms and discount rates Schedule Of Summary Of The Lease Terms And Discount Rates [Table Text Block] Schedule of summary of the lease terms and discount rates. Unrecognized Tax Benefits [Roll Forward] Unrecognized Tax Benefits [Roll Forward] Auditor Name Auditor Name Organization, Business and Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Cash paid during the period for: Supplemental Cash Flow Information [Abstract] Long-Term Incentive Plan Longterm Incentive Plan [Member] Accumulated Amortization Goodwill, Impaired, Accumulated Impairment Loss Other Performance Measure, Amount Other Performance Measure, Amount Weighted- Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Organization Consolidation and Presentation of Financial Statements [Line Items] Organization Consolidation and Presentation of Financial Statements [Line Items] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Net Period [Axis] Net Period [Axis] Lease Obligations Lessee, Finance Leases [Text Block] Other current assets Other Assets, Current Additional paid-in capital Additional Paid in Capital, Common Stock Effect of Change in Accounting Estimate, Type [Axis] Effect of Change in Accounting Estimate, Type [Axis] Net cash flows used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Investment in joint venture Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 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] Interest payments Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Master Loan Agreement Master Loan Agreement [Member] Master Loan Agreement [Member]. Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Effective rate Effective Income Tax Rate Reconciliation, Percent Depreciation and amortization Depreciation, Depletion and Amortization [Abstract] Operating lease cost Operating Lease, Cost Profit sharing and thrift plan Other Employee-related Liabilities, Current Plan Name [Domain] Plan Name [Domain] Remaining weighted average vesting period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Less: Non-U.S. valuation allowances Deferred Tax Assets, Valuation Allowance Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Segment Information Segment Reporting Disclosure [Text Block] Trade names Trademarks [Member] Federal Current Federal Tax Expense (Benefit) Other Commitments [Line Items] Other Commitments [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Leases Lessee, Leases [Policy Text Block] Amortization of intangible assets Intangible asset amortization Amortization of Intangible Assets Selling, general and administrative expenses Selling, General and Administrative Expense Deferred income taxes Deferred Income Tax Assets, Net Depreciation and amortization Depreciation, Depletion and Amortization Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] Fixed price Fixed-Price Contract [Member] Revolving Credit Facility Revolving Credit Facility [Member] Accounts Receivable and Allowance for Doubtful Accounts Accounts Receivable [Policy Text Block] Foreign tax effects Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Net present value of minimum lease payments Finance Lease, Liability Arrangement Duration Trading Arrangement Duration Segments [Axis] Segments [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Accounts receivable, gross current Accounts Receivable, before Allowance for Credit Loss, Current Thereafter Long-Term Debt, Maturity, after Year Five Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Settlement of stock repurchase program (in shares) Shares repurchased (in shares) Stock Repurchased and Retired During Period, Shares ASSETS Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Employee Benefit Plans Retirement Benefits [Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Credit Facility [Domain] Credit Facility [Domain] Shareholders’ equity Equity, Attributable to Parent [Abstract] Debt instrument covenant leveraged debt ratio restriction Debt Instrument Covenant Leveraged Debt Ratio Restriction Threshold of debt coverage ration at which the credit agreement restricts certain types of payments. Stated Interest Rate (per annum) Debt Instrument, Interest Rate, Stated Percentage Operating lease obligations, net of current maturities Operating lease obligations Long-term operating lease obligations Operating Lease, Liability, Noncurrent Entity Voluntary Filers Entity Voluntary Filers Commitments and Contingencies Commitments Contingencies and Guarantees [Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Retirement Plan Name [Domain] Retirement Plan Name [Domain] IBEW Local 332 Pension Plan Part A IBEW Local 332 Pension Plan Part A [Member] IBEW Local 332 Pension Plan Part A Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Credit Agreement Credit Agreement [Member] Credit Agreement [Member]. State - All other states below 5% threshold State and Local Tax Jurisdiction, Other [Member] Current portion of receivable for insurance claims in excess of deductibles Insurance Settlements Receivable, Current Granted (in dollars per shares) Granted at target (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Related Party [Axis] Related and Nonrelated Parties [Axis] Restatement Determination Date: Restatement Determination Date [Axis] Multiemployer Plan [Line Items] Multiemployer Plan [Line Items] Stock issued under compensation plans, net Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Foreign Deferred Foreign Income Tax Expense (Benefit) Accounts Receivable Accounts Receivable [Member] T&D Transmission And Distribution [Member] Other financing activities Proceeds from (Payment for) Other Financing Activity Deferred revenue Deferred revenue, net Contract With Customer Liability Excluding Provision For Loss On Contracts Current Its represent the contract with customer, liability excluding provision for loss on contracts, current. Name Trading Arrangement, Individual Name Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Preferred Stock Preferred Stock [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Accrued Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Cash paid for amounts included in the measurement of lease liabilities Payments for Operating Activities [Abstract] Outstanding, beginning of period (in dollars per share) Outstanding, end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Schedule of future minimum finance lease payments Finance Lease, Liability, to be Paid, Maturity [Table Text Block] Liability Class [Axis] Liability Class [Axis] Canadian Federal Taxes Foreign Tax Jurisdiction [Member] Auditor Firm ID Auditor Firm ID Segments [Domain] Segments [Domain] Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Schedule of amount of the remaining performance obligations that the company reasonably estimates will not be recognized within the next twelve months Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] C&I Commercial And Industrial [Member] Contracts Accounted for under Percentage of Completion Contracts Accounted for under Percentage of Completion [Member] Earnings Per Share Earnings Per Share, Policy [Policy Text Block] All Executive Categories All Executive Categories [Member] Schedule of net deferred tax assets and (liabilities) Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Common stock – $0.01 par value per share; 100,000,000 authorized shares; 15,522,834 and 16,121,901 shares issued and outstanding at December 31, 2025 and December 31, 2024, respectively Common Stock, Value, Issued Finance lease right-of-use assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization Employee Share-Based Payment Arrangement, Employee [Member] Title and Position [Axis] Title and Position [Axis] Commitments and contingencies Commitments and Contingencies One Customer One Customer [Member] One Customer Health Insurance Health Insurance [Member] Health Insurance [Member] Joint Ventures and Noncontrolling Interests Equity Method Investments [Policy Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Estimated remaining costs for bonded projects Guarantor Obligations Expected Costs Its represents the guarantor obligations expected costs. Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Schedule of liability for unrecognized tax benefits reconciliation Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Performance letters of credit Performance Letters Of Credit [Member] 162(m) limitation Effective Income Tax Reconciliation, Section 162m Limitation Effective Income Tax Reconciliation, Section 162m Limitation Cash and cash equivalents: Cash and Cash Equivalent [Abstract] State - California CALIFORNIA Domestic Plan [Member] Domestic Plan [Member] Contractors [Line Items] Contractors [Line Items] n/a Revenue recognized revenues relative to significant variable consideration Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Estimate of Transaction Price Service period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Award expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Net Period Change Net Period Change [Member] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Foreign currency translation Goodwill, Foreign Currency Translation, Gain (Loss) Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Geographical [Axis] Geographical [Axis] Operating And Finance Leases [Line Items] Lessee, Lease, Description [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Foreign currency gain (loss) Gain (Loss), Foreign Currency Transaction, before Tax Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Schedule of Operating And Finance Leases, Disclosure [Table] Lessee, Lease, Description [Table] Contract loss reserves Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Accrued vacation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Compensated Absences Contract assets, allowance Allowance for doubtful accounts Contract with Customer, Asset, Allowance for Credit Loss, Current Income per common share: Earnings Per Share [Abstract] Earnings Per Share [Abstract] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Schedule of shares excluded from calculation of dilute securities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Net present value of minimum lease payments Lease Liability Amount of total lease liability. Contract liabilities, net Increase (Decrease) in Contract with Customer, Liability Accrued loss provision Provision for Loss on Contracts Thereafter Finance Lease, Liability, to be Paid, after Year Five Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Award Timing Disclosures [Line Items] State Deferred State and Local Income Tax Expense (Benefit) Construction equipment Construction Equipment [Member] Net income Net income Net income Net Income (Loss) Attributable to Parent Non-current Liabilities, Noncurrent [Abstract] Other Other Accrued Liabilities, Current Schedule of effective tax rate reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Multiemployer Plan, Employer Contribution, Cost [Abstract] Multiemployer Plan, Employer Contribution, Cost [Abstract] Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Other income, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Prepaid Expenses and Other Current Assets Other Current Assets [Text Block] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Less: billings to date Billings To Date Represents the billings to date on uncompleted contracts accounted for under the percentage-of-completion method. Repurchase of common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Base Rate Base Rate [Member] Customer [Axis] Customer [Axis] Customer relationships Customer Relationships [Member] Income from operations Increase (decrease) in operating income Income from operations Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Swingline Loan Swingline Loan [Member] Swingline Loan Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Insurance coverage deductible Insurance coverage deductible Loss Contingency Insurance Policy Deductible amount of Deductible Insurance Policy for Loss Contingency Amortizable Intangible Assets Finite-Lived Intangible Assets, Net [Abstract] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Other Deferred Tax Liabilities, Other Transmission Market Type Transmission [Member] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Statement [Table] Statement [Table] Other expense, net Other Nonoperating Income (Expense) Deferred income tax expense Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash flows provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Reductions in tax positions due to lapse of statutory limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue Benchmark Revenue Benchmark [Member] Canadian Provincial Taxes Foreign Tax Jurisdiction, Other [Member] Variable Rate [Domain] Variable Rate [Domain] Finance lease obligations, net of current maturities Finance lease obligations Finance Lease, Liability, Noncurrent Accrued self-insurance Net increases in accrued self-insurance Increase (Decrease) in Self Insurance Reserve Other Other Receivables, Gross, Current All Adjustments to Compensation All Adjustments to Compensation [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Number of shares permitted for granting (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Other Postretirement Benefits Plan Other Postretirement Benefits Plan [Member] Deferred debt issuance costs Debt Issuance Costs, Line of Credit Arrangements, Net Termination Date Trading Arrangement Termination Date Insurance Insurance Policy [Policy Text Block] Describes an entity's accounting policy for insurance. Contract assets, net Changes in contract assets Increase (Decrease) in Contract with Customer, Asset Warranty period Product Warranty Obligation, Term Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Remaining lease term Lessee Operating and Finance Leases Remaining Contract Term Lessee operating and finance leases remaining contract term. Weighted-average discount rate – operating leases Operating Lease, Weighted Average Discount Rate, Percent Schedule of stock option activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Accrued interest and penalties at end of period Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Basic (in shares) Weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Indefinite-lived Intangible Assets Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] Schedule of weighted average number of common shares used to compute basic and dilute earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Operating lease expense Operating Lease, Expense Debt Disclosure [Abstract] Debt Disclosure [Abstract] Other income (expense): Nonoperating Income (Expense) [Abstract] Nonemployee Share-Based Payment Arrangement, Nonemployee [Member] Leverage coverage ratio Leverage Coverage Ratio The Company has the option to expand the debt coverage ratio in the event of an acquisition. Less: write offs, net of recoveries Accounts Receivable, Allowance for Credit Loss, Writeoff Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Accrued profit sharing Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits Schedule of individually significant multi-employer plans and in aggregate other plans Multiemployer Plan [Table Text Block] Refundable income taxes Income Taxes Receivable, Current Use of Estimates Use of Estimates, Policy [Policy Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Foreign currency translation Finite-Lived Intangible Assets, Foreign Currency Translation Gain (Loss) Interest coverage ratio Debt Instrument Covenant Interest Coverage Ratio Represent the minimum interest coverage ratio under the credit agreement. Insider Trading Arrangements [Line Items] Provision to return adjustments, net Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Letter of credit facility commitment percentage Line of Credit Facility, Commitment Fee Percentage Product Concentration Risk Product Concentration Risk [Member] 2030 Finance Lease, Liability, to be Paid, Year Five Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Net payments made Loss Contingency Accrual, Payments Gross increases in current period tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions U.S. State rate true up Effective Income Tax Reconciliation, Change In State and Local Tax Rate, True Up, Percent Effective Income Tax Reconciliation, Change In State and Local Tax Rate, True Up, Percent Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Option to increase borrowing capacity Line Of Credit Facility Option To Increase Maximum Borrowing Capacity Represents the option to increase maximum borrowings on the credit facility. U.S. State net operating loss true up Effective Income Tax Reconciliation, State And Local, Net Operating Loss True Up, Percent Effective Income Tax Reconciliation, State And Local, Net Operating Loss True Up, Percent Customer Relationships, Amortizable Trade Names and Backlog Customer Relationships, Amortizable Trade Names And Backlog [Member] Consolidation Items [Axis] Consolidation Items [Axis] Variable Rate [Axis] Variable Rate [Axis] Eighth District Electrical Pension Fund Eighth District Electrical Pension Fund [Member] Eighth district electrical pension fund member. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Option to terminate leases, period Lessee Operating and Finance Leases Option to Terminate Period Lessee, operating and finance leases, option to terminate, period.