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Derivative Financial Instruments - Summary of Euro Equivalent the Contractual Amounts of forward Exchange Contracts (Detail) - Forward exchange contract [member] - EUR (€) € in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | € 40,366 | € 43,645
British pounds [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | 16,947 | 10,612
Euro [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | 11,347 | 11,407
U.S. dollars [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | 6,347 | 14,528
Canadian dollars [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | 1,937 | 1,300
Japanese yen [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | 1,549 | 2,318
Australian dollars [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | 1,280 | 2,129
Danish kroner [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | 751 | 1,086
Swedish kroner [member] |  |
Disclosure Of Derivative Financial Instruments [line items] |  |
Notional amount | € 208 | € 265

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