Concentration of Risk and Enterprise-Wide Disclosures (Tables)

12 Months Ended

Dec. 31, 2023

Trade and contract retainage receivables

Concentration Risk [Line Items]

Schedules of concentration of risk, by risk factor

	December 31, 2023				December 31, 2022
Federal Government	$	8,885	6	%	$	4,612	3	%
State Governments		2,355	2	%		3,111	2	%
Local Governments		12,804	9	%		16,197	10	%
Private Companies		119,590	83	%		134,317	85	%
Gross receivables		143,634	100	%		158,237	100	%
Allowance for credit losses		(361)				(606)
Net receivables	$	143,273			$	157,631

Contract revenues

Concentration Risk [Line Items]

Schedules of concentration of risk, by risk factor

	2023		%		2022		%		2021		%
Federal Government	$	153,410	22	%	$	80,116	11	%	$	54,480	9	%
State Governments		59,354	8	%		62,516	8	%		4,790	1	%
Local Government		99,621	14	%		125,015	17	%		120,311	20	%
Private Companies		399,393	56	%		480,675	64	%		421,779	70	%
Total contract revenues	$	711,778	100	%	$	748,322	100	%	$	601,360	100	%