Business Combinations - Additional Information (Details) - USD ($)				1 Months Ended		3 Months Ended		7 Months Ended	12 Months Ended
	Oct. 01, 2025	May 30, 2025	Jan. 03, 2025	Dec. 31, 2025	Jul. 31, 2023	Dec. 31, 2025	Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Sep. 29, 2025	May 29, 2025	Jan. 02, 2025
Business Combination [Line Items]
Cash acquired										$ 0
Amortization expense										$ 7,128,310	$ 85,840	$ 3,250
Purcell
Business Combination [Line Items]
Acquisition date			Jan. 03, 2025
Description of acquiree										On January 3, 2025 (the “Purcell Acquisition Date”), Cardinal Civil Contracting Charlotte, LLC (“CCCC”) acquired substantially all of the operating assets and certain liabilities of Purcell Construction, Inc., a North Carolina corporation, Purcell Construction Group, LLC, a South Carolina limited liability company, and Orange T, LLC, a North Carolina limited liability company (collectively referred to herein as “Purcell”). Purcell operated a turn‑key site work contracting business primarily in the Charlotte, North Carolina market.
Receivables, Contractual cash flows not expected to be collected			$ 0
Goodwill expected to be deductible for tax purposes, Amortization period			15 years
Revenue									$ 24,791,596
Net loss									$ 902,959
Purcell | Backlog
Business Combination [Line Items]
Amortization expense										$ 5,236,000
Purcell | Transition Services Agreement
Business Combination [Line Items]
Expense related to acquisition			$ 0
Purcell | Cardinal Civil Contracting Charlotte, LLC | Cardinal NC
Business Combination [Line Items]
Ownership interest, percentage			74.60%										100.00%		80.00%
Purcell | Class B Units | Cardinal Civil Contracting Charlotte, LLC | Purcell Construction, Inc.
Business Combination [Line Items]
Shares issued			52
Ownership interest of acquiree			4.60%
Purcell | Class B Units | Cardinal Civil Contracting Charlotte, LLC | Purcell Construction, Inc. | Maximum
Business Combination [Line Items]
Capital contributions			$ 0
Purcell | Class C Units | Cardinal Civil Contracting Charlotte, LLC | Named Individuals
Business Combination [Line Items]
Shares issued			24
Ownership interest of acquiree			2.10%
Purcell | Reduction to Liabilities Assumed Related to Accounts Payable
Business Combination [Line Items]
Measurement period adjustments to purchase consideration				$ 123,000
Purcell | Reduction to Backlog Intangible Asset
Business Combination [Line Items]
Measurement period adjustments to purchase consideration				$ 874,000
Page
Business Combination [Line Items]
Acquisition date		May 30, 2025
Description of acquiree										On May 30, 2025 (the “Page Acquisition Date”), the Company formed Cardinal Civil Contracting Triad, LLC (“Triad”), which acquired substantially all of the operating assets and certain liabilities of Page and Associates, Inc., a North Carolina corporation, and MJS & GCP, LLC, a North Carolina limited liability company (collectively referred to herein as “Page”). Page operated a turn‑key site work contracting business primarily in the Greensboro, North Carolina market.
Receivables, Contractual cash flows not expected to be collected		$ 0
Goodwill expected to be deductible for tax purposes, Amortization period		15 years
Increase in net working capital adjustment							$ 242,409
Increase in goodwill							$ 242,409
Revenue								$ 2,692,433
Net loss								$ 774,267
Page | Backlog
Business Combination [Line Items]
Amortization expense										$ 606,000
Page | Transition Services Agreement
Business Combination [Line Items]
Expense related to acquisition		$ 0
Page | CCC Triad | Cardinal NC
Business Combination [Line Items]
Ownership interest, percentage		80.00%												100.00%
Page | Civil Underground and Boring Company, LLC | Cardinal NC
Business Combination [Line Items]
Ownership interest, percentage		70.00%												100.00%
Page | Class B Units | CCC Triad | Page and Associates, Inc.
Business Combination [Line Items]
Shares issued		200
Ownership interest of acquiree		20.00%
Page | Class B Units | Civil Underground and Boring Company, LLC | MJS & GCP, LLC
Business Combination [Line Items]
Shares issued		300
Ownership interest of acquiree		30.00%
Red Clay
Business Combination [Line Items]
Acquisition date	Oct. 01, 2025
Description of acquiree										On October 1, 2025 (the "Red Clay Acquisition Date"), a subsidiary of the Company, Aviator Paving Company Charlotte ("APCC") acquired substantially all of the operation assets and certain liabilities of Red Clay Industries, Inc., a North Carolina corporation ("Red Clay"). Red Clay provides asphalt paving, curbing, resurfacing, and related services to commercial and municipal customers primarily in the Charlotte, North Carolina market.
Receivables, Contractual cash flows not expected to be collected	$ 0
Goodwill expected to be deductible for tax purposes, Amortization period	15 years
Lease agreement, Term	2 years
Unfavorable fair value adjustment, Reduction to operating lease right of use asset	$ 680,000
Revenue						$ 10,281,941
Net loss						$ 5,494,594
Stock based compensation expense										$ 5,765,487
Red Clay | Backlog and Other Intangible Assets
Business Combination [Line Items]
Amortization expense										$ 1,283,929
Red Clay | Transition Services Agreement
Business Combination [Line Items]
Expense related to acquisition	$ 0
Roadways
Business Combination [Line Items]
Description of acquiree										In July 2023, the Company acquired certain assets and assumed certain liabilities from Monroe Roadways Contractor, Inc. (“Roadways”) The total purchase price was $13,800,000 and was financed via a draw on the Company’s line of credit, a note payable with a financial institution and a $1,000,000 note payable to the seller. In addition, the Company made an additional payment of $164,939 related to the working capital settlement. Roadways is a grading contractor located in Monroe, NC. Acquisition costs related to the Monroe acquisition were $900,000 and are included in general and administrative costs in the statement of operations for the year ended December 31, 2023. The goodwill arising from the acquisitions consists largely of the expected synergies from combining operations as well as the value of the workforce. As a result of this asset acquisition, it is expected that all goodwill reported will be tax deductible.
Purchase price financed via draw of line of credit a note payable					$ 13,800,000
Note payable to seller					1,000,000
Additional payment related to working capital settlement					164,939
Roadways | General and Administrative Costs
Business Combination [Line Items]
Expense related to acquisition					$ 900,000