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Joint Ventures Disclosure [Text Block] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Residential Residential Construction [Member] Represents information pertaining to the Residential Construction segment. Treasury stock (in shares) Treasury Stock, Common, Shares Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Earn-out consideration Business Combination, Consideration Transferred, Earn Out Business Combination, Consideration Transferred, Earn Out Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Related Party Related Party [Member] Product and Service [Domain] Product and Service [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Cash paid (received) for income taxes Income Tax Paid, after Refund Received Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Current maturities of long-term debt Finance Lease, Liability, Current Revenues Net Income (Loss) Attributable to Noncontrolling Interest Deferred tax liability, net Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Shares withheld for taxes (in shares) Shares withheld for taxes (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Weighted Average Life (Years) Weighted Average Life (Years) Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Subsequent Events [Abstract] Subsequent Events [Abstract] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other current liabilities ($12 and $0 related to VIEs) Other current liabilities Other Liabilities, Current E-Infrastructure Solutions RPOs E-Infrastructure Solutions Revenues E-Infrastructure Solutions Segment [Member] E-Infrastructure Solutions Segment Penalties Unrecognized Tax Benefits, Income Tax Penalties Expense Other non-current assets, net Other Assets, Noncurrent 2029 Finance Lease, Liability, to be Paid, Year Three Contract liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities, Contract Liabilities Amount of billings in excess of costs and estimated earnings on uncompleted contracts, assumed at the acquisition date. Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Document Type Document Type Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Fixed-Unit Price Fixed-Price Contract [Member] Fair Value as of Grant Date Award Grant Date Fair Value Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Contract assets ($157 and $5,057 related to VIEs) Contract assets Capitalized Contract Cost, Gross Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Consolidation Items [Axis] Consolidation Items [Axis] Insurance premiums financed through short-term financing agreement Insurance Premiums Financed Through Short-term Financing Agreement Insurance Premiums Financed Through Short-term Financing Agreement Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income before tax Income before tax Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Road and Highway Builders, LLC Road and Highway Builders, LLC [Member] Road and Highway Builders, LLC Commitments and contingencies (Note 11) Commitments and Contingencies Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Revenues Revenues Finance lease, liability, noncurrent, statement of financial position [extensible list] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Total property and equipment Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Measurement Input, Royalty Rate Measurement Input, Royalty Rate [Member] Measurement Input, Royalty Rate Executive Category: Executive Category [Axis] Amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Trade names Trade Names [Member] Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Interest on lease liabilities Finance Lease, Interest Expense 2026 (excluding the six months ended June 30, 2026) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Repurchase of common stock (in shares) Repurchase of common stock (in shares) Treasury Stock, Shares, Acquired PEO Name PEO Name Accrued compensation and other liabilities Increase (Decrease) in Accrued Liabilities Restricted cash Restricted Cash Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Payments of earn-outs Payment for Contingent Consideration Liability, Financing Activities Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Less - Current maturities of long-term debt Long-Term Debt, Current Maturities, Gross Long-Term Debt, Current Maturities, Gross Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Repurchase of common stock Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Schedule of Identifiable Intangible Assets Acquired Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived [Table Text Block] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Cash consideration Payments to Acquire Businesses, Gross Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Total finance lease cost Lease, Cost ESPP (issued upon sale) Employee Stock [Member] Investment, Name [Domain] Investment, Name [Domain] LEASE OBLIGATIONS Lessee, Operating Leases [Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Schedule of Share Grants and Issuances Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Repurchase of common stock Payments for Repurchase of Common Stock Contract liabilities ($166,783 and $89,630 related to VIEs) Contract liabilities Contract with Customer, Liability, Current Total current assets Current assets - RHB’s Balance Sheets Current assets - Joint Ventures’ Balance Sheets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Acquired Indefinite-lived Intangible Assets [Line Items] Intangible Asset, Indefinite-Lived, Acquired [Line Items] Long-term debt Total long-term debt Long-Term Debt, Excluding Current Maturities RSAs Restricted Stock Awards (RSAs) [Member] Restricted Stock Awards (RSAs) Operating Leases Assets and Liabilities, Lessee [Abstract] Award Type [Axis] Award Type [Axis] Short-term lease cost Short-Term Lease, Cost Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Market Based Market Based [Member] Market Based Retained earnings Retained Earnings (Accumulated Deficit) Income before income taxes Income Before Income Taxes And Earnings Attributable To Noncontrolling Interests Sum of operating profit and non-operating income (expense) before income taxes, extraordinary items, cumulative effects of changes in accounting principles, and non-controlling interest. Line of credit facility additional borrowing capacity Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Product and Service [Axis] Product and Service [Axis] Changes in the fair value of earn-outs Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Business combination contingent consideration Business Combination, Contingent Consideration, Liability Operating lease cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Sterling’s noncontrolling interest: Noncontrolling Interest [Abstract] Joint Ventures Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Accounts Receivable Receivable [Policy Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders’ equity Liabilities and Equity EPS Based EPS Based [Member] EPS Based Interest income Interest Income, Other Employee Stock Option Share-Based Payment Arrangement, Option [Member] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Related Party [Domain] Related and Nonrelated Parties [Domain] D Wilson June 2026 Plan [Member] D Wilson June 2026 Plan Tabular List, Table Tabular List [Table Text Block] Additional paid in capital Additional Paid in Capital Construction and transportation equipment Construction Equipment [Member] Represents the construction equipment. Other debt Other Long-Term Debt Total Sterling Stockholders’ Equity Parent [Member] Other operating income, net Other operating income, net Other Operating Income (Expense), Net Name Awards Close in Time to MNPI Disclosures, Individual Name Transportation Solutions RPOs Transportation Solutions Revenues Transportation Solutions Segment [Member] Transportation Solutions Segment Stockholders’ equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Contract liability retainage Contract With Customer, Retainage Liability, Current Contract With Customer, Retainage Liability, Current 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] Percentage of receivables estimated to be collected in next fiscal year Contracts Receivable Retainage, Percentage Estimated To Be Collected In Next Fiscal Year Contracts Receivable Retainage, Percentage Estimated To Be Collected In Next Fiscal Year Receivables from and equity in construction joint ventures Receivables from and equity in construction joint ventures - Sterling's Balance Sheets Receivables From And Equity In Construction Joint Ventures Amounts due from minority-owned entities in which the reporting entity shares joint control with another party or group, due within 1 year (or 1 business cycle). Also, includes the entity's equity in minority-owned joint ventures. General and administrative expense General and Administrative Expense D Wilson Termination Of Trading Arrangement [Member] D Wilson Termination Of Trading Arrangement Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Commercial Commercial [Member] Commercial [Member] Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Contract assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Contract with Customer, Assets, Current Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Contract with Customer, Assets, Current Adjustment to Compensation: Adjustment to Compensation [Axis] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount 2031 Finance Lease, Liability, to be Paid, Year Five Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable ($75,071 and $22,104 related to VIEs) Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Total fair value of consideration transferred Business Combination, Consideration Transferred Additional Paid in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Name Trading Arrangement, Individual Name Cash and cash equivalents ($157,595 and $76,154 related to variable interest entities (“VIEs”)) Cash and cash equivalents Cash and cash equivalents at end of period Cash and Cash Equivalent Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Annual lease expense Operating Lease, Expense Company Selected Measure Amount Company Selected Measure Amount Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Table] Business Combination, Intangible Asset, Acquired, Indefinite-Lived [Table] Distribution of earnings from unconsolidated subsidiaries Proceeds from Equity Method Investment, Distribution Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Payments for general liability per occurrence Self Insurance, General Liability, Amount Per Occurrence Represents self insurance general liability, amount per occurrence. Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net income, including noncontrolling interests Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Current assets: Assets, Current [Abstract] Weighted average remaining lease term, operating leases Operating Lease, Weighted Average Remaining Lease Term Pro forma revenue Business Combination, Pro Forma Information, Pro Forma Revenue Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Income tax expense Income tax expense Income Tax Expense (Benefit) Cost of revenues Cost of revenues Cost of revenues Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Net change in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Net income attributable to Sterling common stockholders Net income attributable to Sterling common stockholders Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Corporate Joint Venture Corporate Joint Venture [Member] Swing Line Loan Bridge Loan [Member] Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Backlog by Segment Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Tax rate benefit for increased tax deductions related to stock compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Non-cash items: Other Noncash Investing and Financing Items [Abstract] BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]