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Inventory Financing Agreements - Schedule of Inventory Intermediation Fees (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Supply Commitment [Line Items]    
Interest expense $ 18,151 $ 18,674
Supply and Offtake Agreements    
Supply Commitment [Line Items]    
Cost of goods and services sold 3,770 6,870
Interest expense 846 1,349
Washington Refinery Intermediation Agreement    
Supply Commitment [Line Items]    
Cost of goods and services sold 971 1,107
Interest expense $ 977 $ 997