Segment Information - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($) segment
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2	2
Intersegment revenues accounted for at current market prices and not eliminated	$ 1,000	$ 600
Contract revenues	188,653	160,672
Marine
Segment Reporting Information [Line Items]
Contract revenues	127,163	106,325
Marine | Foreign
Segment Reporting Information [Line Items]
Contract revenues	11,900	9,600
Concrete
Segment Reporting Information [Line Items]
Contract revenues	61,490	54,347
Concrete | Foreign
Segment Reporting Information [Line Items]
Contract revenues	$ 0	$ 0