DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Impact of Financial Instruments on Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Effect of the Company's derivative financial instruments on the income statement
Total Interest Expense Presented in the Results of Operations in which the Effects of Cash Flow Hedges are Recorded	$ 24,203	$ 18,903	$ 47,529	$ 35,512
Interest expense
Effect of the Company's derivative financial instruments on the income statement
Amount of Gain (Loss) Reclassified from AOCI into Operations	92	652	220	868
Interest rate derivatives
Effect of the Company's derivative financial instruments on the income statement
Amount of Gain (Loss) Reclassified from AOCI into Operations	(900)		(2,000)
Cash Flow Hedging | Interest rate derivatives
Effect of the Company's derivative financial instruments on the income statement
Amount of Gain (Loss) Recognized in AOCI on Derivative	$ (13,016)	$ 6,005	$ (18,832)	$ 14,266