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SHAREHOLDERS EQUITY - Common Stock (Details) - $ / shares
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Jun. 14, 2020
Dec. 31, 2020
Nov. 03, 2020
Jun. 14, 2019
Class of Stock [Line Items]              
Common stock par value $ 0 $ 0     $ 0    
Common Stock              
Class of Stock [Line Items]              
Common stock par value $ 0 $ 0          
Number of votes per each share   one          
Effective term of program       1 year      
Issuance of common stock (in shares)   0 0        
Common Stock | 2019 Repurchase Plan              
Class of Stock [Line Items]              
Authorized share repurchase             300,000
Number of shares repurchased     22,679        
Shares repurchased average price per share     $ 16.50        
Common Stock | 2020 Repurchase Plan              
Class of Stock [Line Items]              
Common stock par value           $ 0  
Authorized share repurchase           400,000  
Number of shares repurchased 0 0