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Product Warranty - Reconciliation of Reserve for Warranty Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Guarantees [Abstract]        
Warranty policy term     2 years  
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]        
Beginning balance $ 9,791 $ 10,783 $ 9,636 $ 7,610
Provision 1,562 2,127 3,370 4,606
Provision liability assumed from acquisition 0 273 0 2,600
Claims paid/costs incurred (1,574) (2,207) (3,227) (3,840)
Ending balance $ 9,779 $ 10,976 $ 9,779 $ 10,976