v2.4.0.6
Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Inventories    
Raw materials $ 26,013 $ 18,482
Work-in-process 22,309 22,955
Finished goods 88,750 84,819
Total 137,072 126,256
Adjust to LIFO cost (73,416) (62,765)
Lower of cost or market adjustment      
Inventory, net $ 63,656 $ 63,491