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Product Warranty - Reconciliation of Reserve for Warranty Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Guarantees [Abstract]        
Warranty policy term     2 years  
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]        
Beginning balance $ 10,700 $ 9,791 $ 9,364 $ 9,636
Provision 3,477 1,562 5,933 3,370
Claims paid/costs incurred (2,644) (1,574) (3,764) (3,227)
Ending balance $ 11,533 $ 9,779 $ 11,533 $ 9,779