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FINANCIAL RISK MANAGEMENT (Market risk narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings | $ 1,722,893 | $ 2,188,674
Weighted Average |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings, interest rate | 1.43% | 2.94%
Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Reasonably possible change in risk variable, percent | (1.00%) |
Reasonably possible change in risk variable, impact on pre-tax earnings | $ 4,000 | $ 7,100
Net investments exposed to volatility in exchange rate, amount | 423,000 |
Reasonably possible change in risk variable, impact on equity | $ (4,200) |
Interest rate risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Reasonably possible change in risk variable, percent | 1.00% |
Argentina, Pesos | Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Reasonably possible change in risk variable, percent | (1.00%) |
Reasonably possible change in risk variable, impact on pre-tax earnings | $ (1,000) | (600)
Mexico, Pesos | Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Reasonably possible change in risk variable, percent | (1.00%) |
Reasonably possible change in risk variable, impact on pre-tax earnings | $ 5,900 | 5,600
Colombia, Pesos | Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Reasonably possible change in risk variable, percent | (1.00%) |
Reasonably possible change in risk variable, impact on pre-tax earnings | $ 200 | 300
Brazil, Brazil Real | Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Reasonably possible change in risk variable, percent | (1.00%) |
Reasonably possible change in risk variable, impact on pre-tax earnings | $ (1,100) | 1,800
Floating Rate |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings | 1,592,944 | 2,023,051
Floating Rate | Interest rate risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Reasonably possible change in risk variable, impact on pre-tax earnings | 20,300 | 22,400
Borrowings | $ 1,593,000 | $ 2,023,000
Borrowings, percentage of total borrowings | 92.50% | 92.40%
Floating Rate | Argentina, Pesos |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings | $ 8 | $ 10
Floating Rate | Mexico, Pesos |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings | 6,256 | 14,789
Floating Rate | Colombia, Pesos |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings | $ 29,197 | $ 30,634

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