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Activity Related to Accrued Warranties (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Product Warranty Liability [Line Items]    
Beginning Balance $ 2,719us-gaap_ProductWarrantyAccrualClassifiedCurrent $ 2,364us-gaap_ProductWarrantyAccrualClassifiedCurrent
Provision for warranty expense 755us-gaap_ProductWarrantyAccrualWarrantiesIssued 869us-gaap_ProductWarrantyAccrualWarrantiesIssued
Fulfillment of warranty obligations (1,272)faro_ProductWarrantyAccrualSettlements (995)faro_ProductWarrantyAccrualSettlements
Ending Balance $ 2,202us-gaap_ProductWarrantyAccrualClassifiedCurrent $ 2,238us-gaap_ProductWarrantyAccrualClassifiedCurrent