Debt and Interest Expense - Interest Expense Table (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Debt Instrument [Line Items]
Interest expense	$ (93,257)	$ (95,571)	$ (287,040)	$ (278,811)
Third Parties [Member]
Debt Instrument [Line Items]
Long-term and short-term debt	(90,913)	(94,201)	(279,122)	(273,620)
Finance lease liabilities	(218)	(369)	(808)	(1,162)
Commitment fees and amortization of debt-related costs	(3,147)	(3,463)	(9,664)	(10,052)
Capitalized interest	1,021	2,462	2,554	6,066
Interest expense	(93,257)	(95,571)	(287,040)	(278,768)
Related Parties [Member]
Debt Instrument [Line Items]
Finance lease liabilities	0	0	0	(43)
Interest expense	$ 0	$ 0	$ 0	$ (43)