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Warranty Accrual Included in Other Accrued Liabilities (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Product Warranty Liability [Line Items]      
Balance at beginning of period $ 8,942 $ 6,660 $ 9,786
Acquisition 409    
Accruals for warranties issued during the period 11,539 15,406 10,574
Accruals related to pre-existing warranties (3,159) (2,008) (3,534)
Settlements made during the period (10,806) (11,116) (10,166)
Balance at end of period $ 6,925 $ 8,942 $ 6,660