Inventory Financing Agreements - Outstanding Borrowings, Letters of Credit, and Contractual Undertaking Obligations Under the Intermediation Agreements (Details) - Washington Refinery Intermediation Agreement - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Discretionary Draw Facility
Supply Commitment [Line Items]
Outstanding borrowings	$ 167,902	$ 165,459
Borrowing capacity	169,765	175,891
MLC receivable advances
Supply Commitment [Line Items]
Outstanding borrowings	0	0
Borrowing capacity	0	0
MLC receivable advances | Letter of Credit
Supply Commitment [Line Items]
Issued letters of credit	0	0
LC Facility due 2024
Supply Commitment [Line Items]
Outstanding borrowings	0	0
Borrowing capacity	120,000	120,000
LC Facility | Letter of Credit
Supply Commitment [Line Items]
Issued letters of credit	$ 0	$ 13,000