Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Crude oil and feedstocks	$ 47,047	$ 86,530
Refined products and blendstock	82,683	115,631
Warehouse stock and other	16,759	17,276
Total	146,489	219,437
Reserves for the lower of cost or market value of inventory	800	23,700
Titled Inventory
Crude oil and feedstocks	4,435	18,404
Refined products and blendstock	22,013	28,023
Warehouse stock and other	16,759	17,276
Total	43,207	63,703
Supply and Offtake Agreements
Crude oil and feedstocks	42,612
Refined products and blendstock	60,670
Warehouse stock and other	0
Total	$ 103,282
Supply and Exchange Agreements
Crude oil and feedstocks		68,126
Refined products and blendstock		87,608
Warehouse stock and other		0
Total		$ 155,734