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STOCKHOLDERS' EQUITY - Stock Based Compensation - RSUs (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2023
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jun. 30, 2022
Restricted stock units                  
STOCKHOLDERS' EQUITY                  
Number of shares granted   85,250 85,350 85,250 85,350        
Number of shares vested 74,988     74,988 64,488        
Number of shares forfeited 38     38 10,538        
Number of shares outstanding 166,050 251,300 241,076 251,300 241,076 241,076 230,752   155,726
Performance cycle       3 years          
Restricted stock units | Vesting Date: June 30, 2026                  
STOCKHOLDERS' EQUITY                  
Number of shares granted       85,250          
Restricted stock units | Vesting Date: June 30, 2025                  
STOCKHOLDERS' EQUITY                  
Number of shares granted           85,350      
Restricted stock units | Vesting Date: June 30, 2024                  
STOCKHOLDERS' EQUITY                  
Number of shares granted             80,700    
Restricted stock units | Vesting Date: June 30, 2023                  
STOCKHOLDERS' EQUITY                  
Number of shares granted               75,026  
Restricted stock units | Awards granted in 2023                  
STOCKHOLDERS' EQUITY                  
Number of shares outstanding   85,250   85,250          
Aggregate fair value of the shares granted   $ 979,000   $ 979,000          
Restricted stock units | Awards granted in 2022                  
STOCKHOLDERS' EQUITY                  
Number of shares outstanding   85,350   85,350          
Aggregate fair value of the shares granted   $ 1,400,000   $ 1,400,000          
Restricted stock units | Awards granted in 2021                  
STOCKHOLDERS' EQUITY                  
Number of shares outstanding   80,700   80,700          
Aggregate fair value of the shares granted   $ 1,822,000   $ 1,822,000          
Restricted stock units | Years granted: 2021 - 2022                  
STOCKHOLDERS' EQUITY                  
Performance cycle       3 years          
Accrual for dividend equivalent rights   $ 385,000   $ 385,000   $ 210,000      
ROC Awards | Awards granted in 2020                  
STOCKHOLDERS' EQUITY                  
Weight       50.00% 50.00%        
ROC Awards | Awards granted in 2020 | Minimum                  
STOCKHOLDERS' EQUITY                  
Average of annual ROC       7.00% 7.00%        
ROC Awards | Awards granted in 2020 | Maximum                  
STOCKHOLDERS' EQUITY                  
Average of annual ROC       9.75% 9.75%        
ROC Awards | Years granted: 2021 - 2022                  
STOCKHOLDERS' EQUITY                  
Weight       50.00% 50.00%        
ROC Awards | Years granted: 2021 - 2022 | Minimum                  
STOCKHOLDERS' EQUITY                  
Average of annual ROC       6.00% 6.00%        
ROC Awards | Years granted: 2021 - 2022 | Maximum                  
STOCKHOLDERS' EQUITY                  
Average of annual ROC       8.75% 8.75%        
TSR awards                  
STOCKHOLDERS' EQUITY                  
Service period       3 years          
Valuation assumptions                  
Expected life       3 years          
Dividend rate       8.72%          
Risk-free interest rate minimum       4.42%          
Risk-free interest rate maximum       5.28%          
Expected price volatility minimum       28.69%          
Expected price volatility maximum       30.05%          
TSR awards | Awards granted in 2020                  
STOCKHOLDERS' EQUITY                  
Weight       50.00% 50.00%        
TSR awards | Awards granted in 2020 | Minimum                  
STOCKHOLDERS' EQUITY                  
Average of annual TSR       7.00% 7.00%        
TSR awards | Awards granted in 2020 | Maximum                  
STOCKHOLDERS' EQUITY                  
Average of annual TSR       12.00% 12.00%        
TSR awards | Years granted: 2021 - 2022                  
STOCKHOLDERS' EQUITY                  
Weight       50.00% 50.00%        
TSR awards | Years granted: 2021 - 2022 | Minimum                  
STOCKHOLDERS' EQUITY                  
Average of annual TSR       6.00% 6.00%        
TSR awards | Years granted: 2021 - 2022 | Maximum                  
STOCKHOLDERS' EQUITY                  
Average of annual TSR       11.00% 11.00%