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Inventories (Detail) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Inventory [Line Items] |  |
Crude oil and feedstocks | $ 59,969 | $ 86,530
Refined products and blendstock | 117,046 | 115,631
Warehouse stock and other | 19,936 | 17,276
Total | 196,951 | 219,437
Reserves for the lower of cost or market value of inventory |  | 23,700
Titled Inventory |  |
Inventory [Line Items] |  |
Crude oil and feedstocks | 12,117 | 18,404
Refined products and blendstock | 37,749 | 28,023
Warehouse stock and other | 19,936 | 17,276
Total | 69,802 | 63,703
Supply and Offtake Agreements |  |
Inventory [Line Items] |  |
Crude oil and feedstocks | 47,852 | 68,126
Refined products and blendstock | 79,297 | 87,608
Warehouse stock and other | 0 | 0
Total | $ 127,149 | $ 155,734

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