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Product Warranties - Product Warranty Activities (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Guarantees [Abstract]    
Beginning balance $ 8,266 $ 8,315
Provision for product warranties 1,705 3,750
Direct charges to warranty liability (3,142) (3,733)
Foreign currency translation (97) 505
Ending balance $ 6,732 $ 8,837