Financial Instruments - Derivative Instruments Measured at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Liabilities	$ 16,021	$ 7,415
Foreign currency contracts
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Assets	2,534	3,575
Total Fair Value, Derivative Liabilities	7,563	3,228
Currency Swap
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Liabilities	8,458
Interest rate swaps
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Liabilities		4,187
Fair Value of Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Liabilities	13,575	4,984
Fair Value of Derivatives Designated as Hedging Instruments [Member] | Foreign currency contracts
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Assets	909	1,310
Total Fair Value, Derivative Liabilities	5,117	797
Fair Value of Derivatives Designated as Hedging Instruments [Member] | Currency Swap
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Liabilities	8,458
Fair Value of Derivatives Designated as Hedging Instruments [Member] | Interest rate swaps
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Assets	8,500
Total Fair Value, Derivative Liabilities		4,187
Fair Value of Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Liabilities	2,446	2,431
Fair Value of Derivatives Not Designated as Hedging Instruments [Member] | Foreign currency contracts
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Assets	1,625	2,265
Total Fair Value, Derivative Liabilities	2,446	$ 2,431
Fair Value of Derivatives Not Designated as Hedging Instruments [Member] | Currency Swap
Derivatives, Fair Value [Line Items]
Total Fair Value, Derivative Liabilities	$ 0