DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Gains (Losses) on Hedging Instruments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Net investment hedge (cross-currency swap)	$ (2,911,000)	$ 0	$ (2,911,000)	$ 0
Losses from hedging instruments recognized in AOCI	(4,210,000)		(4,210,000)
Interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Cash flow hedge (interest rate swap), net of tax	(1,299,000)		(1,299,000)
Cross-currency swap
Derivative Instruments, Gain (Loss) [Line Items]
Net investment hedge (cross-currency swap)	$ (2,911,000)		$ (2,911,000)