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Financial Derivatives and Hedging Activities - Additional Information (Detail) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2020 EUR (€) | Feb. 08, 2019 EUR (€)
Derivative [Line Items] |  |  |
Pre-tax gain from changes in currency exchange rates | $ | $ 0.8 |  |
Term Loans [Member] |  |  |
Derivative [Line Items] |  |  |
Line of credit facility, maximum borrowing capacity | € |  | € 220,000,000 | € 220,000,000
Maximum [Member] | Fair Value, Measurements [Member] |  |  |
Derivative [Line Items] |  |  |
Accumulated other comprehensive income realization period | 18 months |  |
Minimum [Member] | Fair Value, Measurements [Member] |  |  |
Derivative [Line Items] |  |  |
Accumulated other comprehensive income realization period | 12 months |  |
Designated as Hedging [Member] | Cash Flow Hedges [Member] | Maximum [Member] |  |  |
Derivative [Line Items] |  |  |
Maturities of foreign currency derivative contracts | 18 months |  |
Designated as Hedging [Member] | Cash Flow Hedges [Member] | Minimum [Member] |  |  |
Derivative [Line Items] |  |  |
Maturities of foreign currency derivative contracts | 1 month |  |
Not Designated as Hedging [Member] |  |  |
Derivative [Line Items] |  |  |
Maturities of foreign currency derivative contracts | 1 month |  |

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