Derivatives - Schedule of Pre-Tax Gain (Loss) Recognized in the Statement of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Commodity derivatives | Cost of revenues
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain (loss)	$ (51,902)	$ (1,547)	$ (3,420)
J. Aron repurchase obligation derivative | Cost of revenues
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain (loss)	(20,970)	(3,912)	23,649
MLC terminal obligation derivative | Cost of revenues
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain (loss)	39,820	(19,326)	0
Interest rate derivatives | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain (loss)	$ (2,265)	$ (1,506)	$ 1,309