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BALANCE SHEET DETAILS - Components of Inventories (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Balance Sheet Related Disclosures [Abstract]
Purchased parts and raw materials	$ 20,820	$ 17,693
Work-in-process	3,186	7,266
Finished goods	9,303	4,244
Inventories, net	$ 33,309	$ 29,203

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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