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Product Warranty - Reconciliation of Reserve for Warranty Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Guarantees [Abstract]    
Warranty policy term 2 years  
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Beginning balance $ 9,364 $ 9,636
Provision 2,456 1,808
Claims paid/costs incurred (1,120) (1,653)
Ending balance $ 10,700 $ 9,791