Related Party Transactions - Results of Operations (Details)		3 Months Ended		12 Months Ended
		Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 Loan
Related Party Transaction [Line Items]
Total revenue from related parties	[1]	$ 235,298,000	$ 275,191,000
Cost of revenue		197,222,000	220,924,000
General and administrative expenses	[2]	38,009,000	45,147,000
Other expense, net	[3]	(1,170,000)	(1,343,000)
SK Ecoplant | Korean Joint Venture
Related Party Transaction [Line Items]
Number of term loans | Loan				2
Related Party
Related Party Transaction [Line Items]
Total revenue from related parties		122,168,000	833,000
Cost of revenue		20,000	0
General and administrative expenses		203,000	0
Interest expense		52,000	0
Other expense, net		(491,000)	$ 0
Equity Method Investee
Related Party Transaction [Line Items]
Total revenue from related parties		$ 0

[1] Including related party revenue of $122.2 million and $0.8 million for the three months ended March 31, 2024, and 2023, respectively.

[2] Including related party general and administrative expenses of $0.2 million for the three months ended March 31, 2024. There were no related party general and administrative expenses for the three months ended March 31, 2023.

[3] Including related party other expense, net of $(0.5) million for the three months ended March 31, 2024. There was no related party other expense, net for the three months ended March 31, 2023.