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, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Effect of the Company's derivative financial instruments on the income statement
Interest expense	$ 18,903	$ 14,448	$ 35,512	$ 32,306
Interest Expense
Effect of the Company's derivative financial instruments on the income statement
Amount of Gain (Loss) Reclassified from AOCI into Operations	652	(133)	868	(331)
Cash Flow Hedging \| Interest Rate Swap
Effect of the Company's derivative financial instruments on the income statement
Amount of Gain (Loss) Recognized in AOCI on Derivative	$ 6,005	$ (2,816)	$ 14,266	$ (2,581)

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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-Publisher FASB
-Name Accounting Standards Codification
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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

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Amount of the cost of borrowed funds accounted for as interest expense.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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