Segment Information - Revenue and Gross Margin by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue and other financial information by reportable segment
Revenue	$ 268,488	$ 229,834
Gross margin	155,745	116,444
Capital expenditures	99,755	84,392
Contract operations
Revenue and other financial information by reportable segment
Revenue	223,051	187,745
Gross margin	145,308	108,263
Aftermarket services
Revenue and other financial information by reportable segment
Revenue	45,437	42,089
Gross margin	$ 10,437	$ 8,181