Contracts in progress (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Contract With Customer, In Progress, Revenue Recognized And Amounts Billed, Disclosure [Line Items]
Revenues recognized to date on contracts in process			$ 108,952,682	$ 25,469,014
Amounts billed to date on contracts in process			(101,724,459)	(33,407,182)
Retainage			8,087,823	2,047,969
Net contract asset (liability)			15,316,046	(5,890,199)
Net Income (Loss)			29,585,391	5,856,294
Income from operations			$ 37,167,627	$ 9,272,185
Increase in diluted earnings			$ 1.93	$ 0.54
Increase in basic earnings			$ 1.95	$ 0.54
Balance Sheet location
Contract assets			$ 21,553,057	$ 2,913,722
Contract liabilities			(6,237,011)	$ (8,803,921)
Change in Accounting Method Accounted for as Change in Estimate [Member]
Contract With Customer, In Progress, Revenue Recognized And Amounts Billed, Disclosure [Line Items]
Net Income (Loss)			1,750,750
Income from operations			$ 2,356,439
Increase in diluted earnings			$ 0.11
Increase in basic earnings			$ 0.11
Contracts in progress
Contract With Customer, In Progress, Revenue Recognized And Amounts Billed, Disclosure [Line Items]
Revenues recognized to date on contracts in process			$ 162,200,000
Contract with Customer, Liability, Revenue Recognized			$ 8,700,000
Contracts in progress | Forecast [Member]
Contract With Customer, In Progress, Revenue Recognized And Amounts Billed, Disclosure [Line Items]
Revenues recognized to date on contracts in process	$ 140,000,000	$ 22,200,000