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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING - Narrative (Details) $ in Thousands | Jun. 30, 2018 USD ($) Instrument | Dec. 31, 2017 USD ($) Instrument
--- | --- | ---
Derivative [Line Items] |  |
Fixed-rate debt | $ 554,461 | $ 386,313
Fixed rate debt, percentage | 58.00% | 44.00%
Variable-rate debt | $ 401,352 | $ 486,796
Variable-rate debt, percentage | 42.00% | 56.00%
Interest rate swaps |  |
Derivative [Line Items] |  |
Reclassification from other comprehensive income in next 12 months | $ 400 |
Designated as hedges | Interest rate swaps |  |
Derivative [Line Items] |  |
Number of derivatives in an asset position | Instrument | 3 | 2
Number of derivatives in a liability position | Instrument | 2 | 1

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- Definition The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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