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

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

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- Definition

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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-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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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.

+ References

No definition available.

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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative instruments	$ 9,817	$ 3,307
Fair Value, Inputs, Level 2 [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(1,715)	(1,783)	$ (10,213)
Currency Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 0	(1,380)	(10,213)
Forward Contracts [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held	0
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (1,715)	$ (403)	$ 0
2021 Euro Loan [Member] \| Interest Rate Swap, Nov 10, 2015, 235.335m EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held	3
Derivative, Notional Amount	$ 210,335
Derivative instruments	$ (639)
2021 Euro Loan [Member] \| Interest Rate Swap, Apr 26, 2018, 235.335m EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held	3
Derivative, Notional Amount	$ 210,335
Derivative instruments	$ (1,607)
2023 Euro Loan [Member] \| Interest Rate Swap, Apr 5, 2016, 468.8m EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held	5
Derivative, Notional Amount	$ 468,800
Derivative instruments	$ (2,728)
2023 Euro Loan [Member] \| Interest Rate Swap [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Number of Instruments Held	4
Derivative, Notional Amount	$ 468,800
Derivative instruments	(5,482)
Designated as Hedging Instrument [Member] \| 2021 Euro Loan [Member] \| Interest Rate Swap, Nov 10, 2015, 235.335m EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount	65,204
Designated as Hedging Instrument [Member] \| 2021 Euro Loan [Member] \| Interest Rate Swap, Apr 26, 2018, 235.335m EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount	65,204
Designated as Hedging Instrument [Member] \| 2023 Euro Loan [Member] \| Interest Rate Swap, Apr 5, 2016, 468.8m EUR [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount	468,800
Designated as Hedging Instrument [Member] \| 2023 Euro Loan [Member] \| Interest Rate Swap [Member]
Fair Value, By Balance Sheet Grouping Disclosure Information [Line Items]
Derivative, Notional Amount	$ 468,800