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Inventories (Detail) - USD ($) | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Inventory [Line Items] |  |
Crude oil and feedstocks | $ 147,519,000 | $ 61,302,000
Refined products and blendstock | 124,576,000 | 116,593,000
Warehouse stock and other | 20,974,000 | 20,431,000
Total | 293,069,000 | 198,326,000
Reserves for the lower of cost or market value of inventory | 0 | 200,000
Titled Inventory |  |
Inventory [Line Items] |  |
Crude oil and feedstocks | 60,169,000 | 11,620,000
Refined products and blendstock | 42,011,000 | 38,916,000
Warehouse stock and other | 20,974,000 | 20,431,000
Total | 123,154,000 | 70,967,000
Supply and Offtake Agreements |  |
Inventory [Line Items] |  |
Crude oil and feedstocks | 87,350,000 | 49,682,000
Refined products and blendstock | 82,565,000 | 77,677,000
Warehouse stock and other | 0 | 0
Total | $ 169,915,000 | $ 127,359,000

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