v3.3.0.814
Inventories (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials $ 25,225 $ 28,283
Work-in-process 23,836 19,169
Finished goods 77,877 84,020
Total 126,938 131,472
Adjust to LIFO cost (29,104) (53,221)
Lower of cost or market adjustment 0 0
Inventory, net $ 97,834 $ 78,251