Related Party Transactions (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Cost of sales, exclusive of operating expenses and depreciation and amortization	$ 934,700,000	$ 755,300,000
Accounts payable to related party	1,200,000		$ 1,000,000.0
Cedar Cove Joint Venture
Related Party Transaction [Line Items]
Cost of sales, exclusive of operating expenses and depreciation and amortization	3,200,000	2,900,000
Accounts payable to related party	1,200,000		$ 1,000,000.0
GIP
Related Party Transaction [Line Items]
General and administrative expenses from transactions with related party	$ 100,000	$ 0