v2.4.0.8

Inventories - Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Inventory Net [Abstract]
Raw materials	$ 15,174	$ 26,013
Work-in-process	30,719	22,309
Finished goods	82,441	88,750
Total	128,334	137,072
Adjust to LIFO cost	(63,831)	(73,416)
Lower of cost or market adjustment
Inventory, net	$ 64,503	$ 63,656	[1]
[1] The consolidated balance sheet at December 31, 2012, as presented, is derived from the audited consolidated financial statements at that date.

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