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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

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