Derivatives - Schedule of Unsettled Purchased Foreign Currency Forward Contracts (Details) - Foreign currency forward contracts - Long ₨ in Thousands, £ in Thousands, zł in Thousands, kr in Thousands, R$ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2019 AUD ($)	Dec. 31, 2019 GBP (£)	Dec. 31, 2019 SGD ($)	Dec. 31, 2019 INR (₨)	Dec. 31, 2019 SEK (kr)	Dec. 31, 2019 PLN (zł)	Dec. 31, 2018 BRL (R$)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 AUD ($)	Dec. 31, 2018 GBP (£)	Dec. 31, 2018 SGD ($)	Dec. 31, 2018 INR (₨)	Dec. 31, 2018 SEK (kr)	Dec. 31, 2018 PLN (zł)
Polish Zloty
Derivative [Line Items]
Notional amount	$ 68,971						zł 265,000		$ 64,281						zł 232,500
Average contract rate	0.2603	0.2603	0.2603	0.2603	0.2603	0.2603	0.2603	0.2765	0.2765	0.2765	0.2765	0.2765	0.2765	0.2765	0.2765
Singapore Dollar
Derivative [Line Items]
Notional amount	$ 46,759			$ 63,500					$ 44,504			$ 59,800
Average contract rate	0.7364	0.7364	0.7364	0.7364	0.7364	0.7364	0.7364	0.7442	0.7442	0.7442	0.7442	0.7442	0.7442	0.7442	0.7442
Indian Rupee
Derivative [Line Items]
Notional amount	$ 61,708				₨ 4,485,000				$ 39,956				₨ 2,880,000
Average contract rate	0.0138	0.0138	0.0138	0.0138	0.0138	0.0138	0.0138	0.0139	0.0139	0.0139	0.0139	0.0139	0.0139	0.0139	0.0139
British Pound Sterling
Derivative [Line Items]
Notional amount	$ 24,109		£ 18,400						$ 26,525		£ 19,600
Average contract rate	1.3103	1.3103	1.3103	1.3103	1.3103	1.3103	1.3103	1.3533	1.3533	1.3533	1.3533	1.3533	1.3533	1.3533	1.3533
Australian Dollar
Derivative [Line Items]
Notional amount	$ 11,521	$ 16,500							$ 17,674	$ 23,950
Average contract rate	0.6982	0.6982	0.6982	0.6982	0.6982	0.6982	0.6982	0.7379	0.7379	0.7379	0.7379	0.7379	0.7379	0.7379	0.7379
Swedish Krona
Derivative [Line Items]
Notional amount	$ 4,106					kr 38,100			$ 5,678					kr 48,250
Average contract rate	0.1075	0.1075	0.1075	0.1075	0.1075	0.1075	0.1075	0.1177	0.1177	0.1177	0.1177	0.1177	0.1177	0.1177	0.1177
Brazilian Real
Derivative [Line Items]
Notional amount								R$ 14,300	$ 3,753
Average contract rate								0.2615	0.2615	0.2615	0.2615	0.2615	0.2615	0.2615	0.2615