Document and Entity Information Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Common Stock [Member] Common stock Represents the redeemable warrants. Redeemable Warrants [Member] Redeemable warrants Document Information [Line Items] Document and Entity Information Document Type Document Quarterly Report Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Condensed Consolidated Balance Sheets Statement [Table] Statement [Line Items] Statement Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and cash equivalents Restricted Cash Restricted cash at end of period Restricted cash at beginning of period Restricted cash Receivables, Net, Current Accounts receivable, net Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract. Retainage Receivables Retainage receivables Contract with Customer, Asset, after Allowance for Credit Loss, Current Contract assets Total contract assets Other Assets, Current Other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Operating Lease, Right-of-Use Asset Right-of-use assets Investments Unconsolidated Entities Investments - unconsolidated entities Investments Limited Liability Companies Investments - limited liability companies Marketable Securities, Noncurrent Investments - private equity Deferred Income Tax Assets, Net Deferred tax asset Goodwill Finite-Lived Intangible Assets, Net Intangible assets, net Other Assets, Noncurrent Other noncurrent assets Assets, Noncurrent Total noncurrent assets Assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND EQUITY Accounts Payable and Accrued Liabilities, Current [Abstract] Current liabilities Accounts Payable, Current Accounts payable Retainage Payable Retainage payable Accrued Liabilities, Current Accrued liabilities Long-Term Debt, Current Maturities Less: Current portion Current portion of long-term debt Operating Lease, Liability, Current Short-term operating lease liabilities Contract with Customer, Liability, Current Contract liabilities Contract liabilities Liabilities, Current Total current liabilities Long-Term Debt, Excluding Current Maturities Long-term debt Total long-term debt Operating Lease, Liability, Noncurrent Long-term operating lease liabilities Deferred Income Tax Liabilities, Net Deferred tax liabilities The carrying amount of financing obligations due after one year or beyond the operating cycle if longer Financing Obligations, Noncurrent Financing obligations, net Financing obligation, non-current The amount represents Long-term accrued liabilities. Long-term accrued liabilities Long-term accrued liabilities Amount of surety payable as a guarantee obligations which is classified as non-current. Guarantee Obligations, Surety Payable, Noncurrent Surety payable Aggregate advanced Other Liabilities, Noncurrent Other noncurrent liabilities Liabilities, Noncurrent Total long-term liabilities Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies (Note 6) Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stockholders' equity (deficit) Preferred Stock, Value, Issued Preferred stock, $0.0001 par value, authorized 50,000,000 shares, none issued and outstanding as of June 30, 2026 and December 31, 2025 Common Stock, Value, Issued Common stock, $0.0001 par value, authorized 500,000,000 shares, 54,435,257 and 54,113,036 issued and outstanding as of June 30, 2026 and December 31, 2025, respectively Additional Paid in Capital Additional paid-in-capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Equity, Attributable to Parent Total stockholders' equity (deficit) Equity, Attributable to Noncontrolling Interest Noncontrolling interest Equity, Including Portion Attributable to Noncontrolling Interest Ending balance Beginning balance Total equity (deficit) Liabilities and Equity Total liabilities and equity Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Common Stock, shares outstanding Condensed Consolidated Statements of Operations Revenues Revenue Cost of Goods and Services Sold Cost of construction Cost of Construction Gross Profit Decrease in gross profit Gross profit (loss) from segments Gross profit (loss) Gross Profit Selling, General and Administrative Expense Selling, general, and administrative expenses Operating Income (Loss) Total operating income (loss) Operating income (loss) Gain (Loss) on Investments Gain on investments, net Other Nonoperating Income (Expense) Other income, net Interest Expense, Nonoperating Interest expense Income (Loss) from Continuing Operations before Income Taxes, Domestic Losses before income taxes Losses before income taxes Income Tax Expense (Benefit) Income tax benefit Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Net loss Net loss Net Income (Loss) Attributable to Noncontrolling Interest Less net income (loss) attributable to noncontrolling interests Net income (loss) attributable to noncontrolling interests Net loss attributable to Southland Stockholders Loss per Share Net loss per share attributable to common stockholders Earnings Per Share, Basic Basic (in dollars per share) Net loss per share - basic (in dollars per shares) Earnings Per Share, Diluted Diluted (in dollars per share) Net loss per share - diluted (in dollars per shares) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average shares outstanding Denominator: Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding - basic (in shares) Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Weighted average common shares outstanding - diluted (in shares) Condensed Consolidated Statements of Comprehensive Loss Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation adjustment, net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss attributable to Southland Stockholders Condensed Consolidated Statements of Equity Equity Components [Axis] Equity Component [Domain] AOCI Attributable to Parent [Member] AOCI Additional Paid-in Capital [Member] Additional Paid-In Capital Retained Earnings [Member] Accumulated Deficit Noncontrolling Interest [Member] Noncontrolling Interest Shares, Outstanding Ending balance (shares) Beginning balance (shares) Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance of shares - RSUs, net of tax Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Issuance of shares - RSUs, net of tax (in shares) Stock Issued During Period, Shares, New Issues Issuance of common stock (in shares) Distributions To Members Distributions to members APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Share based compensation Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Condensed Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Amortization of Acquisition Costs Amortization of deferred financing costs Accounts Receivable, Allowance for Credit Loss, Writeoff Bad debt expense Deferred Income Tax Expense (Benefit) Deferred taxes Employee Benefit and Share-Based Payment Arrangement, Noncash Share based compensation Gain (Loss) on Disposition of Assets for Financial Service Operations Gain on sale of assets Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Foreign currency remeasurement (gain) loss Income (Loss) from Equity Method Investments Loss (earnings) from equity method investments Debt and Equity Securities, Gain (Loss) Gain on trading securities, net Increase (Decrease) in Operating Capital [Abstract] Changes in assets and liabilities: The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services and amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract. Increase (Decrease) in Accounts Receivable and Retainage Receivable Accounts and retainage receivables Increase (Decrease) in Contract with Customer, Asset Contract assets Increase (Decrease) in Other Current Assets Other current assets Increase (Decrease) in ROU Assets Right-of-use assets Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable, retainage payable and accrued liabilities Increase (Decrease) in Contract with Customer, Liability Contract liabilities Increase (Decrease) in Operating Lease Liability Operating lease liabilities Other Operating Activities, Cash Flow Statement Other Net Cash Provided by (Used in) Operating Activities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from sale of property and equipment Payments for (Proceeds from) Other Investing Activities Distributions from other investments Cash inflow received as distributions, returns of capital, or sale proceeds from limited liability companies held for investment purposes. Proceeds from Investments In Limited Liability Company Return of investment in limited liability company Net Cash Provided by (Used in) Investing Activities Net cash provided by investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Repayments of Notes Payable Payments on notes payable Payments of Financing Costs Payments of deferred financing costs The cash inflow from payments received from related parties. Payments From Related Parties Payments from related parties Payments to related parties. Payments To Related Parties Payments to related parties Amount of cash outflow for principal payment on finance lease and financing obligations. Finance Lease, Principal and Financing Obligation Payments Payments on finance lease and financing obligations Payments of Distributions to Affiliates Distribution to members Cash Outflow related to payments of taxes , net share settlement of RSUs. Payments of Taxes Related to Net Share Settlement of RSUs Payment of taxes related to net share settlement of RSUs Amount of proceeds from advancement of surety funds Proceeds From advancement of surety funds Proceeds from advancement of surety funds Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Effect of exchange rate on cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net decrease in cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents End of period Beginning of period Supplemental Cash Flow Information [Abstract] Supplemental cash flow information Income Taxes Paid Cash paid for income taxes Cash paid for interest Cash paid for interest Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash investing and financing activities: Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Lease assets obtained in exchange for new leases Capital Expenditures Incurred but Not yet Paid Assets obtained in exchange for notes payable Description of Business Business Description and Basis of Presentation [Text Block] Description of Business No definition available. Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Basis of Presentation Fair Value of Investments Fair Value Of Investments [Text Block] Fair Value of Investments Revenue Revenue from Contract with Customer [Text Block] Revenue Debt. Debt Disclosure [Text Block] Debt Commitments and Contingencies. Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Income Taxes Income Tax Disclosure [Text Block] Income Taxes Remaining Unsatisfied Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Remaining Unsatisfied Performance Obligations The entire disclosure for remaining unsatisfied performance obligations. Remaining Unsatisfied Performance Obligations [Text Block] Remaining Unsatisfied Performance Obligations Cost and Estimated Earnings on Uncompleted Contracts The entire disclosure for cost and estimated earnings on uncompleted contracts. Cost and Estimated Earnings on Uncompleted Contracts [Text Block] Cost and Estimated Earnings on Uncompleted Contracts Noncontrolling Interests Holders Noncontrolling Interest [Table] Noncontrolling Interest [Line Items] Noncontrolling Interests Holders Noncontrolling Interest Disclosure [Text Block] Noncontrolling Interests Holders Related Party Transactions Related Party Transactions Disclosure [Text Block] Related Party Transactions Share Based Compensation Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Share Based Compensation Earnings Per Share [Text Block] Loss per Share Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Consolidation, Policy [Policy Text Block] Consolidation Disclosure of accounting policy for determining liquidity and whether accounting needs to be on going concern basis. Liquidity, Going Concern [Policy Text Block] Liquidity Reclassification, Comparability Adjustment [Policy Text Block] Reclassifications Use of Estimates, Policy [Policy Text Block] Use of Estimates Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Cash, Cash Equivalents, and Restricted Cash Goodwill and Intangible Assets, Policy [Policy Text Block] Goodwill and Indefinite-Lived Intangibles Disclosure of accounting policy for the valuation of long-lived assets. Valuation Of Long Lived Assets [Policy Text Block] Valuation of Long-Lived Assets Receivable [Policy Text Block] Accounts Receivable, Net Disclosure of accounting policy for transactions involving real estate financing transaction. Real Estate, Financing Transaction [Policy Text Block] Real Estate Transaction New Accounting Pronouncements, Policy [Policy Text Block] Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements Significant Accounting Policies [Text Block] Significant Accounting Policies Disclosure of accounting policy pertaining to accounting for warrants. Accounting For Warrants [Policy Text Block] Warrants Schedule of Cash and Cash Equivalents [Table Text Block] Schedule of cash, cash equivalents, and restricted cash Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of fair value of investments measured on a recurring basis Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Schedule of revenue by segment Tabular disclosure of reconciliation of total cost of construction from reportable segments to the entity's consolidated cost of construction. Reconciliation of Cost of Construction from Segments to Consolidated [Table Text Block] Schedule of cost of construction by segment Tabular disclosure of gross profit by segment. Schedule of Revenue By Major Customers By Reporting Gross Profit Segments [Table Text Block] Schedule of gross profit (loss) by segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Schedule of reconciliation of segment gross profit (loss) Schedule of Debt [Table Text Block] Schedule of long-term debt and credit facilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Schedule of contract assets Tabular disclosure of costs and estimated earnings on uncompleted contracts. Schedule Of Costs And Estimated Earnings On Uncompleted Contracts [Table Text Block] Schedule of costs and estimated earnings on uncompleted contracts Tabular disclosure of net contract position. Schedule Of Net Contract Position [Table Text Block] Schedule of net contract position Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Schedule of changes in RSUs during the years Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] Schedule of changes in PSUs during the year Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of loss per share basic and diluted Disclosure of information pertaining to income taxes. Description Of Business [Table] Debt Instrument [Axis] Debt Instrument, Name [Domain] This member stands for promissory note. Promissory Note [Member] Promissory note Statistical Measurement [Axis] Statistical Measurement [Domain] Maximum [Member] Maximum Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Description Of Business [Line Items] Description of Business Represents the number of subsidiaries of the entity. Number Of Subsidiaries Number of subsidiaries Number of shares issued during period in exchange for membership interest. Stock Issued During Period, Shares, Exchange For Membership Interest Shares issued to former members Proceeds from Issuance of Common Stock Net proceeds received Business Combination, Acquisition Related Costs Transaction costs Dividends Payable Dividend payable to members Debt Instrument, Term Note expiration term Term of debt Debt Instrument, Interest Rate, Stated Percentage Interest rate (as a percent) Debt Conversion, Converted Instrument, Amount Amount of promissory notes converted to common stock Class of Warrant or Right, Outstanding Warrants outstanding Class of Warrant or Right, Exercise Price of Warrants or Rights Exercise price (in dollars per share) Nature of Operation, Product Information, Concentration of Risk [Table] Litigation Case [Axis] Litigation Case [Domain] Represents the information pertaining to Washington State Convention Center Project. Washington State Convention Center Project [Member] Washington State Convention Center Project Counterparty Name [Axis] Counterparty Name [Domain] Represents information related to Clark/Lewis Joint Venture ("CLJV"). Clark Lewis Joint Venture [Member] CLJV Product Information [Line Items] Basis of Presentation Working capital Working capital Loss Contingency, Damages Awarded, Value Principal amount awarded Guarantor Obligations, Current Carrying Value Aggregate value Number of Reporting Units Number of reporting units Allowance for Doubtful Accounts, Premiums and Other Receivables Allowance for credit losses Number of real estate properties sold. Number Of Real Estate Properties Sold Number of properties sold The amount of cash inflow from financing obligations. Proceeds from Financing Obligations Proceeds from financing obligations Represents the interest rate applied to the financing obligation recognized as a result of the failed sale-leaseback transaction. Financing Obligation, Interest Rate Financing obligation, interest rate (percentage) Represents the interest expenses on financing obligation recognized as a result of the failed sale-leaseback transaction. Financing Obligation, Interest Expenses Interest expenses related to real estate Number of warrants or rights issued. Class of Warrant or Right, Issued shares Warrants issued Cash, Cash Equivalents and Restricted Cash Fair Value, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Domain] Fair Value, Recurring [Member] Recurring Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 3 [Member] Level 3 Financial Instrument [Axis] Financial Instruments [Domain] Private Equity Funds [Member] Private equity Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value of Investments Investments, Fair Value Disclosure Investments Noncurrent Assets, Fair Value Disclosure Overall Total Disaggregation of Revenue [Table] Segments [Axis] Segments [Domain] Civil [Member] Civil Transportation [Member] Transportation Disaggregation of Revenue [Line Items] Revenue Segment revenue as in percentage Segment Revenue, Percentage % of Total Revenue Cost of construction expressed in percentage. Cost of Construction, Percentage % of Total Cost of Construction Gross profit, as percent of segment revenue. Gross Profit, as Percent of Segment Revenue % of Segment Revenue Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Revenue Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate, Type [Domain] Contracts Accounted for under Percentage of Completion [Member] Contracts Accounted for under Percentage of Completion Contract with Customer, Receivable, Allowance for Credit Loss Accrued loss provisions Number of Reportable Segments Number of reportable segments The percentage of revenues from outside of the United States. Percentage of Revenues From Outside United States Percentage of revenue earned outside of the US Line of Credit Facility [Table] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Secured Debt [Member] Secured notes Mortgages [Member] Mortgage notes Line of Credit Facility [Line Items] Debt Long-Term Debt, Gross Total debt Term loan balance Debt Issuance Costs, Net Unamortized deferred financing costs Long-Term Debt Total debt, net Long-Term Debt, Weighted Average Interest Rate, at Point in Time Weighted average interest rate on debt Minimum [Member] Minimum Schedule of Long-Term Debt Instruments [Table] Represents information pertaining to credit agreement. Credit Agreement [Member] Credit Agreement Represents information pertaining to term loan. Term Loan [Member] Term Loan Delayed Draw Term Loan (DDTL) [Member] Delayed Draw Term Loan Long-Term Debt, Type [Axis] Long-Term Debt, Type [Domain] Debt Instrument [Line Items] Debt Debt Instrument, Face Amount Debt instrument face amount Face amount The percent of principal amortization of long term debt in year one. Long-Term Debt, Maturity, Percentage of Principal Amortization in Year One Principal amortization in first year (as a percent) The percent of principal amortization of long term debt per quarter in year one. Long-Term Debt, Maturity, Percentage of Principal Amortization Per Quarter in Year One Principal amortization per quarter in first year (as a percent) The percent of principal amortization of long term debt in year two. Long-Term Debt, Maturity, Percentage of Principal Amortization in Year Two Principal amortization in second year (as a percent) The percent of principal amortization of long term debt per quarter in year two. Long-Term Debt, Maturity, Percentage of Principal Amortization Per Quarter in Year Two Principal amortization per quarter in second year (as a percent) The percent of principal amortization of long term debt in year three and four. Long-Term Debt, Maturity, Percentage of Principal Amortization in Year Three and Four Principal amortization in third and fourth year (as a percent) The percent of principal amortization of long term debt per quarter in year three and four. Long-Term Debt, Maturity, Percentage of Principal Amortization Per Quarter in Year Three and Four Principal amortization per quarter in third and fourth year (as a percent) Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Debt Instrument, Basis Spread on Variable Rate Basis spread (as a percent) Period of time which attracts additional fees for prepayments of principal other than mandatory prepayments, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Debt Instrument, Prepayment Term Subject to Additional Fees Prepayment term subject to additional fees Percentage of prepayment fee in year one. Debt Instrument, Percentage of Prepayment Fee, Year One Percentage of prepayment fee in year one Percentage of prepayment fee in year two. Debt Instrument, Percentage of Prepayment Fee, Year Two Percentage of prepayment fee in year two Percentage of prepayment fee in year three. Debt Instrument, Percentage of Prepayment Fee, Year Three Percentage of prepayment fee in year three Amount of the fee that accompanies borrowing for prepayments made in fourth year. Debt Instrument, Prepayment Fee Amount, Year Four Fees for prepayments in fourth year Threshold Liquidity to be maintained failing which must comply with TTM EBITDA Covenant. Debt Instrument, EBITDA Covenant Compliance, Threshold Liquidity Amount Threshold liquidity for EBITDA covenant compliance Period of compliance with TTM EBITDA Covenant if failed to maintain threshold liquidity. Debt Instrument, EBITDA Covenant Compliance, Threshold Liquidity Amount, Period Threshold liquidity for EBITDA covenant compliance, period Minimum liquidity amount to be maintained under credit agreement covenants. Debt Instrument, Covenant Compliance, Minimum Liquidity Amount Minimum liquidity Repayments of Long-Term Debt Repayments of long-term debt Debt Instrument, Repaid, Principal Principal repaid Amount of accrued interest of debt repaid. Debt Instrument, Repaid, Accrued Interest Accrued interest Amount of aggregate principal of loans transferred by the assignor to the new assignee under assignment and assumption agreement. Assigned Interest, Principal Of Loans Sold Principal of loans sold Aggregate purchase price paid by the new assignees to the assignors under the assignment and assumption agreement for the acquisition of loans. Loan Purchase Price Paid By Assignees Loan purchase price paid by assignees Represents information related to Berkshire, Zurich and Markel. Berkshire Zurich and Markel [Member] Berkshire, Zurich and Markel Represents information related to City of Charlotte. City of Charlotte [Member] City of Charlotte Litigation Status [Axis] Litigation Status [Domain] Pending Litigation [Member] Pending Litigation Project [Axis] Project [Domain] Represents information pertaining to City LYNX Gold line phase 2- Streetcar project. City LYNX Gold Line Phase 2 Streetcar Project [Member] City LYNX Gold Line Phase 2 Streetcar Amount of initial agreed contract price of a construction contract between the entity and the customer. Construction Contract Price Construction contract price Amount of consideration claimed by the entity under the construction project, subject to resolution. Contract Claim Value Contract claim value Amount of claim under construction contract that is collectible and recorded as a contract asset. Contract Asset From Claims Contract asset from claims Amount of retainage withheld under a construction contract, collectible upon completion or acceptance of work. Construction Contract, Retainage Receivable Construction contract, Retainage receivable Loss Contingency Accrual Loss contingency accrual Litigation Settlement, Amount Awarded to Other Party Litigation settlement, amount awarded to other party Amount of non-cash charge to revenue. Non Cash Charge To Revenue Non-cash charge to revenue Amount of a sanctions order awarded to other party in judgment or settlement of litigation. Litigation Settlement, Sanctions Order Awarded to Other Party Sanctions order awarded to other party Loss Contingency, Accrual, Noncurrent Surety payable The original length of streetcar system constructed as per the contract. Original Length Of Streetcar System Constructed Original length of streetcar system constructed Increase in the length of streetcar system previously constructed. Increase In Length Of Streetcar System, Previously Constructed Increase in length of streetcar system, previously constructed Loss Contingency, New Claims Filed, Number Number of claims Gain Contingency, Unrecorded Amount Damages sought Disclosure of information pertaining to income taxes. Income Tax Disclosure [Table] Geographical [Axis] Geographical [Domain] CANADA Canada UNITED KINGDOM United Kingdom Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Domain] Domestic Tax Jurisdiction [Member] Federal UNITED STATES United States Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Income Tax Disclosure [Line Items] Income Taxes Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Federal statutory tax rate Effective Income Tax Rate Reconciliation, Percent Effective tax rate Deferred Tax Assets, Valuation Allowance Valuation allowance Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Percentage of consolidated joint venture contracts included in unearned revenue calculation. Unearned Revenue Calculation, Percentage of Consolidated Joint Venture Contracts Included Percentage of consolidated joint venture contracts Revenue, Remaining Performance Obligation, Amount Remaining unsatisfied performance obligations Revenue, Remaining Performance Obligation, Percentage Percentage of revenue expects to recognize Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Expected timing of satisfaction Contract with Customer, Asset, Past Due [Table] Contract with Customer, Asset, Past Due [Line Items] Cost and Estimated Earnings on Uncompleted Contracts Costs In Excess of Billings Costs in excess of billings The amount of costs to fulfill contracts, net, as of balance sheet date. Costs To Fulfill Contracts, Net Costs to fulfill contracts, net Costs Incurred on Uncompleted Contracts Costs incurred on uncompleted contracts Estimated Earnings Estimated earnings (losses) Costs Incurred and Estimated Earnings Costs incurred and estimated earnings (losses) Less Billings To Date Less: billings to date The amount of contract assets net of contract liabilities, as of balance sheet date. Net Contract Position Net contract position Claims Claims Contract with Customer, Liability, Revenue Recognized Contract revenue recognized Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] Ownership [Axis] Ownership [Domain] Oscar Renda [Member] Oscar Renda Southland Astaldi [Member] Southland Astaldi American Bridge [Member] American Bridge Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] Noncontrolling Interests Holders Subsidiary, Ownership Percentage, Parent Noncontrolling Interests Represents the total percentage of the contractual work done by the entity due to an individual party. Percentage of Total Contract Work, Performed Total contracted work responsible for Related Party Transaction [Table] Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Related Party [Member] Related Party Persons with designation of chief executive officer and co-chief operating officer. Chief Executive Officer and Co-Chief Operating Officer [Member] Chief Executive Officer and co-Chief Operating Officer Investment, Name [Axis] Investment, Name [Domain] Entity that purchased real estate from the Company. Real Estate Entity [Member] Real estate entity Related Party Transaction [Axis] Related Party Transaction [Domain] Represents information pertaining to bonds secured by chief executive officer and co-chief operating officer. Bonds Secured by Chief Executive Officer and Co-Chief Operating Officers [Member] Bonds secured by Chief Executive Officer and Co-Chief Operating Officers Related Party Transaction [Line Items] Related Party Transactions Costs and Expenses, Related Party Cost of construction, related parties Equity Method Investment, Ownership Percentage Ownership percentage Related Party Transaction, Amounts of Transaction Total related party transactions Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Restricted Stock Units (RSUs) [Member] RSU Represents information pertaining to share-based payment arrangement awarded for meeting performance target. Performance Stock Units (PSUs) [Member] PSU Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share Based Compensation Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] RSU's and PSU's Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Outstanding, ending balance Outstanding, beginning balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited The number of equity-based payment instruments, excluding stock (or unit) options, that were canceled during the reporting period. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Canceled In Period Canceled Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted-Average Grant-Date Fair Value per RSU and PSU Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Outstanding, ending balance Outstanding, beginning balance Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Canceled Weighted Average Grant Date Fair Value Canceled Plan Name [Axis] Plan Name [Domain] Represents the information pertaining to Twenty Twenty Two Equity Incentive plan. Equity Incentive Plan 2022 [Member] Equity Incentive Plan 2022 Common Stock, Capital Shares Reserved for Future Issuance Shares reserved for future issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Number of shares available for grant (in shares) Share-Based Payment Arrangement, Expense Compensation cost Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Weighted average remaining period of recognition Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic Net loss attributable to common stockholders, basic Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Warrant [Member] Warrants Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Basic and Diluted Net Loss Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive securities excluded from computation of earnings per share (in shares)