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Product Warranty Accrual Included in Other Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Other Accrued Liabilities [Line Items]    
Balance as of January 1 $ 14,719 $ 14,886
Provision for warranties issued in current year 1,179 1,400
Provision for pre-existing warranties 0 650
Payments (1,285) (1,573)
Balance as of March 31 $ 14,613 $ 15,363