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Inventory Financing Agreements (Details) barrel / d in Thousands |  |  | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 08, 2017 | Jun. 01, 2015 USD ($) barrel / d | Mar. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | May 31, 2021 USD ($) | Dec. 31, 2017 USD ($) | Dec. 21, 2017 | Feb. 29, 2016 USD ($) installment
Supply Commitment [Line Items] |  |  |  |  |  |  |  |
Supply and exchange agreement expenses |  |  | $ 8,377,000 | $ 8,942,000 |  |  |  |
Supply and Offtake Agreements |  |  |  |  |  |  |  |
Supply Commitment [Line Items] |  |  |  |  |  |  |  |
Agreement extension term | 1 year |  |  |  |  |  |  |
Barrels of crude per day provided (up to) | barrel / d |  | 94 |  |  |  |  |  |
Handling fees |  |  | 4,800,000 | 3,100,000 |  |  |  |
Supply and exchange agreement expenses |  |  | 700,000 | $ 800,000 |  |  |  |
Amount of deferred payment arrangement |  | $ 125,000,000 |  |  |  |  |  |
Percentage of receivables and inventory for deferred payment arrangement |  | 85.00% |  |  |  |  |  |
Deferral arrangement fee |  | $ 1,300,000 |  |  |  |  |  |
Variable interest rate basis |  | P3M |  |  |  |  |  |
Capacity of deferred payment arrangement |  |  | 73,100,000 |  |  | $ 83,100,000 |  |
Outstanding amount of deferred payment arrangement |  |  | 62,700,000 |  |  | 41,100,000 |  |
Fee agreement receivable |  |  | $ (4,700,000) |  |  | $ (7,100,000) |  | $ (14,600,000)
Number of fee agreement payments | installment |  |  |  |  |  |  |  | 18
Supply and Offtake Agreements | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |
Supply Commitment [Line Items] |  |  |  |  |  |  |  |
Margin on LIBOR rate |  | 3.75% |  |  |  |  |  |
Deferred payment availability fee |  | 0.75% |  |  |  |  |  |
7.75% Senior Secured Note due 2025 |  |  |  |  |  |  |  |
Supply Commitment [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  | 7.75% |  |  |  |  |
Senior Notes | 7.75% Senior Secured Note due 2025 |  |  |  |  |  |  |  |
Supply Commitment [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  | 7.75% |  |  |  | 7.75% |
Scenario, Forecast | Supply and Offtake Agreements |  |  |  |  |  |  |  |
Supply Commitment [Line Items] |  |  |  |  |  |  |  |
Fee agreement receivable |  |  |  |  | $ (2,200,000) |  |  |

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