Fair Value of Financial Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency forward contracts Maturity Period			90 days
Foreign currency transaction gains	$ 100	$ 100	$ 1,000	$ 100
Supplemental profit sharing plan	6,140		6,140		$ 6,059
Contingent liabilities	204		204		581
Other Noncurrent Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent liabilities	200		200		600
Profit Sharing Plan [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Supplemental profit sharing plan	$ 6,100		$ 6,100		$ 6,100