Inventory Financing Agreements - Supply and Offtake Agreements (Details) $ in Millions				12 Months Ended
	Jul. 01, 2021 USD ($)	Jun. 01, 2021 USD ($) mbpd d	Feb. 01, 2020 USD ($) settlement_payment	Dec. 31, 2021 USD ($)	May 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 01, 2018 USD ($)
London Interbank Offered Rate (LIBOR)
Basis spread on variable rate				3.25%
Supply and Offtake Agreement
Commitment period		1 year
Service agreement termination prior to extension, term		120 days
Inventory maintain minimum liquidity of not less than amount		$ 15.0
Number of consecutive business days | d		3
Inventory liquidity consisting of cash and cash equivalents		$ 7.5
Barrels of crude per day provided by J. Aron | mbpd		150
Amount of deferred payment arrangement	$ 165.0
Percentage of receivables and inventory for deferred payment	85.00%
Current borrowing capacity				$ 126.2		$ 80.1
Outstanding amount of deferred payment arrangement						78.6
Percentage of receivables for deferred payment	85.00%
Purchase and supply commitment deferred payment arrangement inventory amount	$ 82.5
Percentage of inventory for deferred payment	85.00%
Fee agreement receivable			$ 0.8		$ 18.2	$ 0.5	$ 2.2
Number of payments | settlement_payment			15
Number of fee agreement payments				6.2
Supply and Offtake Agreement | Minimum
Basis spread on variable rate	3.50%
Supply and Offtake Agreement | Maximum
Basis spread on variable rate	4.00%
Supply and Offtake Agreement | London Interbank Offered Rate (LIBOR)
Basis spread on variable rate	3.50%
Deferred payment availability fee	0.75%