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Inventories (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Inventory, Finished Goods, Net of Reserves	$ 32,604	$ 24,476
Inventory, Raw Materials and Purchased Parts, Net of Reserves	18,004	6,727
Inventory, Work in Process, Net of Reserves	2,606	2,776
Inventory, Net	$ 53,214	$ 33,979

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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