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BALANCE SHEET DETAILS - Components of Prepaid Expense and Other Current Assets (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2014
Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]    
Value-added tax $ 2,605 $ 2,134
Prepaid inventory 2,375 492
Other current assets 1,717 2,641
Prepaid expenses and other current assets $ 6,697 $ 5,267