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Commitments and Contingencies - Reconciliation of Changes in Accrued Warranty Costs (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Loss Contingency [Abstract]    
Balance at beginning of the period $ 4,596 $ 4,514
Warranty claims paid (1,624) (355)
Warranty expense for products shipped during the period 842 1,226
Adjustments to warranty estimates from prior periods (942) (419)
Adjustments due to currency translation (20) 10
Balance at end of period $ 2,852 $ 4,976