v2.4.0.8

Inventories - Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Inventory Net [Abstract]
Raw materials	$ 19,869	$ 26,013
Work-in-process	26,776	22,309
Finished goods	90,704	88,750
Total	137,349	137,072
Adjust to LIFO cost	(64,736)	(73,416)
Lower of cost or market adjustment
Inventory, net	$ 72,613	$ 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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