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Inventories (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Inventories
Raw materials	$ 75,580	$ 77,364	$ 66,016
In-process products	21,594	21,357	19,885
Finished products	88,043	81,408	81,033
Total inventories	$ 185,217	$ 180,129	$ 166,934

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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