DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Effect of Derivative Instruments on the Consolidated Statements of Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative instruments, gain or (loss)
Foreign Exchange Contract, Amount of Gain (Loss) Recognized in Income on Derivative, not designated as hedging instruments	$ (141)	$ 652
Other Nonoperating Income (Expense)	1,556	5,550	$ 6,694
Interest Expense.	35,489	32,626	$ 40,597
Derivatives in Cash Flow Hedging Relationships
Derivative instruments, gain or (loss)
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	8,361	20,039
Amount of Gain (Loss) Reclassified from AOCI on Derivative	8,063	18,175
Foreign Exchange Contracts
Derivative instruments, gain or (loss)
Foreign Exchange Contract, Amount of Gain (Loss) Recognized in Income on Derivative, not designated as hedging instruments	(141)	652
Cross Currency Swap Contract: Interest Component | Interest expense | Derivatives in Cash Flow Hedging Relationships
Derivative instruments, gain or (loss)
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	5,103	7,014
Amount of Gain (Loss) Reclassified from AOCI on Derivative	4,805	5,150
Interest Expense.	35,489
Cross Currency Swap Contract: Foreign Exchange Component | Other Income (Expense): Miscellaneous, net | Derivatives in Cash Flow Hedging Relationships
Derivative instruments, gain or (loss)
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	3,258	13,025
Amount of Gain (Loss) Reclassified from AOCI on Derivative	3,258	$ 13,025
Other Nonoperating Income (Expense)	$ 1,556