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Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Crude oil and feedstocks	$ 149,984	$ 61,302
Refined products and blendstock	172,422	116,593
Warehouse stock and other	22,951	20,431
Total	345,357	198,326
Reserves for the lower of cost or market value of inventory	0	200
Titled Inventory
Crude oil and feedstocks	93,970	11,620
Refined products and blendstock	63,505	38,916
Warehouse stock and other	22,951	20,431
Total	180,426	70,967
Supply and Offtake Agreements
Crude oil and feedstocks	56,014	49,682
Refined products and blendstock	108,917	77,677
Warehouse stock and other	0	0
Total	$ 164,931	$ 127,359

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

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