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BALANCE SHEET DETAILS - Summary of Components of Other Current Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Other current liabilities:    
Warranty $ 2,803us-gaap_ProductWarrantyAccrualClassifiedCurrent $ 1,786us-gaap_ProductWarrantyAccrualClassifiedCurrent
Value-added tax 1,547us-gaap_SalesAndExciseTaxPayableCurrent 358us-gaap_SalesAndExciseTaxPayableCurrent
Accrued restructuring charge - current 366us-gaap_RestructuringReserveCurrent 812us-gaap_RestructuringReserveCurrent
Other 1,914us-gaap_OtherAccruedLiabilitiesCurrent 1,166us-gaap_OtherAccruedLiabilitiesCurrent
Other current liabilities $ 6,630us-gaap_AccruedLiabilitiesCurrent $ 4,122us-gaap_AccruedLiabilitiesCurrent