DERIVATIVE AND HEDGING INSTRUMENTS - Effect of Derivatives and Financial Instruments Designated as Hedging Instruments on Income and Equity (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income	[1]	$ 292
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income		3,099	$ (2,174)	$ (1,360)
Interest rate products
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income		3,099
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income			(2,174)	(1,360)
Foreign currency products
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income		0	0	0
CAD term loan
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income		0	0	0
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income		14,149	1,841	44
Designated as Hedging Instrument | Interest rate products | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income		2,707	10,807	5,879
Designated as Hedging Instrument | Foreign currency products
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income		3,554	(2,378)	(2,085)
Designated as Hedging Instrument | CAD term loan
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income		$ 7,888	$ (6,588)	$ (3,750)

[1] Amounts are net of income tax benefit of $48,000 and expense of $0.1 million for the years ended December 31, 2018 and 2017, respectively, and none for the year ended December 31, 2016.