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Financial Statement Details - Summary of Accrued Warranty Obligations (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]    
Warranty liability at beginning of period $ 2,244us-gaap_ProductWarrantyAccrual $ 2,329us-gaap_ProductWarrantyAccrual
Additions charged to operations 1,345us-gaap_ProductWarrantyAccrualWarrantiesIssued 5,055us-gaap_ProductWarrantyAccrualWarrantiesIssued
Deductions from liability (2,393)us-gaap_ProductWarrantyAccrualPayments (5,140)us-gaap_ProductWarrantyAccrualPayments
Warranty liability at end of period $ 1,196us-gaap_ProductWarrantyAccrual $ 2,244us-gaap_ProductWarrantyAccrual