DERIVATIVE FINANCIAL INSTRUMENTS - Gain (Loss) on Derivatives in Cash Flow Relationship (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount expected to be reclassified out of accumulated comprehensive income into earnings	$ 2,700
Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives	(12,381)
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)	(2,278)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives	0
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives		$ (2,386)	$ (867)
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)		(1,431)	(694)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives		0	0
Cash flow hedges | Foreign currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives	(9,638)
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)	(1,031)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives	0
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives		(812)	(867)
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)		(798)	(694)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives		0	$ 0
Cash flow hedges | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives	(2,743)
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)	(1,247)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives	$ 0
Amount of Gains (Losses) Deferred in Accumulated Other Comprehensive Income (Loss) on Derivatives		(1,574)
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss)		(633)
Amount and Location of (Losses) Recognized in Income (Loss) on Derivatives		$ 0