Concentration of Risk and Enterprise-Wide Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Concentration Risk [Line Items]
Allowance for credit losses	$ (787)		$ (555)
Contract revenues	188,653	$ 160,672
Customer concentration risk \| Trade and contract retainage receivables
Concentration Risk [Line Items]
Gross receivables	178,153		142,492
Allowance for credit losses	(787)		(555)
Net receivables	$ 177,366		$ 141,937
Concentration risk, percentage	100.00%		100.00%
Customer concentration risk \| Contract revenues
Concentration Risk [Line Items]
Contract revenues	$ 188,653	$ 160,672
Concentration risk, percentage	100.00%	100.00%
Customer concentration risk \| Federal Government \| Trade and contract retainage receivables
Concentration Risk [Line Items]
Gross receivables	$ 43,336		$ 19,874
Concentration risk, percentage	24.00%		14.00%
Customer concentration risk \| Federal Government \| Trade and contract retainage receivables \| US Navy
Concentration Risk [Line Items]
Concentration risk, percentage	21.80%		11.10%
Customer concentration risk \| Federal Government \| Contract revenues
Concentration Risk [Line Items]
Contract revenues	$ 41,884	$ 53,382
Concentration risk, percentage	22.00%	33.00%
Customer concentration risk \| Federal Government \| Contract revenues \| US Navy
Concentration Risk [Line Items]
Concentration risk, percentage	17.70%	23.70%
Customer concentration risk \| State Governments \| Trade and contract retainage receivables
Concentration Risk [Line Items]
Gross receivables	$ 16,835		$ 9,553
Concentration risk, percentage	10.00%		7.00%
Customer concentration risk \| State Governments \| Contract revenues
Concentration Risk [Line Items]
Contract revenues	$ 28,961	$ 13,984
Concentration risk, percentage	15.00%	9.00%
Customer concentration risk \| Local Governments \| Trade and contract retainage receivables
Concentration Risk [Line Items]
Gross receivables	$ 28,977		$ 24,641
Concentration risk, percentage	16.00%		17.00%
Customer concentration risk \| Local Governments \| Contract revenues
Concentration Risk [Line Items]
Contract revenues	$ 37,037	$ 28,973
Concentration risk, percentage	20.00%	18.00%
Customer concentration risk \| Private Companies \| Trade and contract retainage receivables
Concentration Risk [Line Items]
Gross receivables	$ 89,005		$ 88,424
Concentration risk, percentage	50.00%		62.00%
Customer concentration risk \| Private Companies \| Contract revenues
Concentration Risk [Line Items]
Contract revenues	$ 80,771	$ 64,333
Concentration risk, percentage	43.00%	40.00%
Geographic concentration \| Contract revenues \| Foreign
Concentration Risk [Line Items]
Concentration risk, percentage	6.30%	6.00%

Trade Accounts Receivable and Contract Receivable Retainage, Gross

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Amount of allowance for credit loss on accounts receivable, classified as current.

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