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EQUITY AND MEZZANINE EQUITY - Sale of Common Shares (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Average price of shares issues (in dollars per share) $ 71.39 $ 72.29
Commissions $ 901 $ 310
At-The-Market Offering    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Common Shares 829 308
Total Consideration $ 59,187 $ 22,019