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Accounting Policies and Basis of Presentation - Inventory (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Accounting Policies [Abstract]    
Finished goods $ 18,963 $ 15,126
Barreled distillate 33,813 28,278
Work in process 1,942 2,364
Raw materials 7,161 6,675
Maintenance materials 5,610 5,371
Other 894 887
Total $ 68,383 $ 58,701