Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Narrative) (Details)

v3.21.1
COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - Performance Shares
$ in Thousands, $ in Millions
3 Months Ended 12 Months Ended
Nov. 08, 2016
CAD ($)
item
shares
Mar. 31, 2021
shares
Dec. 31, 2020
shares
Dec. 31, 2017
USD ($)
Commitments and Contingencies        
Number of executives | item 2      
EBITDA threshold | $ $ 7,500      
Shares issued 6,000,000   5,000,000  
Trailing days for average closing price 30 days      
Liability recorded for value of shares | $       $ 16
Number of performances shares settled   219,838 5,000,000  
Number of performance shares not yet settled   780,162