XML 145 R108.htm IDEA: XBRL DOCUMENT v3.19.1
FINANCIAL RISK MANAGEMENT - Currency Risk Positions (Details) - Currency risk
$ in Thousands
Dec. 31, 2019
CAD ($)
$ / $
Dec. 31, 2018
CAD ($)
$ / $
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]    
Notional amount | $ $ 30,000 $ 54,140
Estimated usage 40.30% 71.20%
Hedging price ($/gallon and $/litre)   1.36
Floor price    
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]    
Hedging price ($/gallon and $/litre) 1.2614 1.2500
Cap price    
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]    
Hedging price ($/gallon and $/litre) 1.3710 1.3348