DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) swap	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Derivative [Line Items]
Number of Instruments \| swap	2
Current Notional	$ 300,000
Gain on cash flow hedge ineffectiveness	0	$ 54
Hedge ineffectiveness recognized			$ 792
Estimated reclass to earnings from AOCI	2,500
Derivative fair value	$ 6,100	$ 5,000

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80845-113994

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of gain (loss) from the ineffectiveness of the hedge.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
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-Name Accounting Standards Codification
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-Section 50
-Paragraph 4C
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The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

+ References

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-Publisher FASB
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The number of derivative instruments of a particular group held by the entity.

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The gain recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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