DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Impact of Financial Instruments on Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 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	$ 23,326	$ 16,609
Interest Expense
Effect of the Company's derivative financial instruments on the income statement
Amount of Gain (Loss) Reclassified from AOCI into Operations	128	216
Interest rate derivatives
Effect of the Company's derivative financial instruments on the income statement
Amount of Gain (Loss) Reclassified from AOCI into Operations	(1,100)
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	$ (5,816)	$ 8,261