Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Inventory [Line Items]
Crude oil and feedstocks	$ 135,579	$ 61,302
Refined products and blendstock	162,956	116,593
Warehouse stock and other	21,329	20,431
Total	319,864	198,326
Reserves for the lower of cost or market value of inventory	0	200
Titled Inventory
Inventory [Line Items]
Crude oil and feedstocks	64,208	11,620
Refined products and blendstock	52,734	38,916
Warehouse stock and other	21,329	20,431
Total	138,271	70,967
Supply and Offtake Agreements
Inventory [Line Items]
Crude oil and feedstocks	71,371	49,682
Refined products and blendstock	110,222	77,677
Warehouse stock and other	0	0
Total	$ 181,593	$ 127,359

Refined products and blend stock

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The aggregate carrying amount as of the balance sheet date of unrefined petroleum and the liquid hydrocarbon components recovered from natural gas.

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Carrying amount as of the balance sheet date of finished goods inventories for petroleum products, crude oil, petrochemical products, and other oil and gas inventories.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Name Accounting Standards Codification
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Amount of valuation reserve for inventory.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 330
-SubTopic 10
-Section S99
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-Subparagraph (SAB TOPIC 5.BB)
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