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Inventories (Schedule of Inventory, Current) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Inventory Disclosure [Abstract]
Finished goods and parts	$ 93,095	$ 90,444
Work in process	7,922	10,570
Raw materials	7,741	13,509
Inventory, Net	$ 108,758	$ 114,523

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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