FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS Hedge Accounting Activities (Details) $ in Thousands	Jun. 30, 2020 USD ($)
2023 Euro Loan [Member] \| Interest Rate Swap, Apr 26, 2018, 468.8m EUR [Member]
Derivative [Line Items]
Number of Contracts	4
Aggregate Notional Amount	$ 468,800
Fair Value as at June 30, 2020	$ (10,899)
2023 Euro Loan [Member] \| Interest Rate Swap, Apr 5, 2016, 468.8m EUR [Member]
Derivative [Line Items]
Number of Contracts	5
Aggregate Notional Amount	$ 468,800
Fair Value as at June 30, 2020	$ (949)
2021 Euro Loan [Member] \| Interest Rate Swap, Apr 26, 2018, 210.335m EUR [Member]
Derivative [Line Items]
Number of Contracts	3
Aggregate Notional Amount	$ 60,335
Fair Value as at June 30, 2020	$ (427)

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

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