Derivative instruments and hedging activities - Summary Of Notional Amounts Of Derivative Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Total forward contracts notional amount	$ 383,288	$ 276,756
Chinese yuan
Derivative [Line Items]
Total forward contracts notional amount	32,970	45,520
Euro
Derivative [Line Items]
Total forward contracts notional amount	130,122	134,654
Japanese yen
Derivative [Line Items]
Total forward contracts notional amount	53,527	15,141
Hungarian forint
Derivative [Line Items]
Total forward contracts notional amount	95,228	35,384
British pound
Derivative [Line Items]
Total forward contracts notional amount	13,988	9,948
Malaysian ringgit
Derivative [Line Items]
Total forward contracts notional amount	32,725	27,778
Korean won
Derivative [Line Items]
Total forward contracts notional amount	$ 24,728	$ 8,331