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FINANCIAL INSTRUMENTS - Interest Rate Swap Transactions (Details) - Interest rate swap - Cash flow hedging - Designated as Hedging Instrument - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Notional value	$ 597,500	$ 737,500
Minimum | LIBOR
Derivative [Line Items]
Fixed interest rates	1.69%	1.68%
Maximum | LIBOR
Derivative [Line Items]
Fixed interest rates	2.37%	2.37%

X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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- Definition

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+ References

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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