DERIVATIVES AND HEDGING ACTIVITY - Gains and Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effect of derivative instruments on the Consolidated Statements of Operations
Unrealized holding gain/(loss) Recognized in OCI	$ 4,806	$ 1,802	$ 3,514
Gain/(Loss) recognized in Interest Income and Other Income/(Expense), net		(1)	(3)
Interest expense \| Cash Flow Hedging \| Interest rate contracts
Effect of derivative instruments on the Consolidated Statements of Operations
Unrealized holding gain/(loss) Recognized in OCI	4,806	1,802	3,514
Gain/(Loss) Reclassified from Accumulated OCI into Interest expense	1,948	(1,271)	(3,657)
Interest rate contracts \| Interest expense \| Cash Flow Hedging \| Interest rate contracts
Effect of derivative instruments on the Consolidated Statements of Operations
Gain/(Loss) recognized in Interest Expense (Amount excluded from effectiveness testing)		$ 136
Interest rate contracts \| Other income/(expense)
Effect of derivative instruments on the Consolidated Statements of Operations
Gain/(Loss) recognized in Interest Income and Other Income/(Expense), net	$ 0		$ 0

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

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-Publisher FASB
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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
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Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
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