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NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE (Details) - $ / shares
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE [Abstract]          
Shares excluded from calculations of diluted net income per share (in Shares) 0 0 0 0  
Equity per common share (in Dollars per share) $ 0.68 $ 0.66 $ 1.81 $ 1.61  
Common Stock [Member] | Class A Stock [Member]          
NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE [Abstract]          
Common stock, shares authorized (in Shares) 15,000,000 15,000,000 15,000,000 15,000,000  
Common stock, shares outstanding (in Shares) 9,431,674 9,416,339 9,431,674 9,416,339  
Common stock, shares issued (in Shares) 9,431,674 9,416,339 9,431,674 9,416,339  
Common stock, par value (in Dollars per share) $ 1 $ 1 $ 1 $ 1  
Equity per common share (in Dollars per share)     $ 24.14   $ 23.24
Common Stock [Member] | Class B Stock [Member]          
NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE [Abstract]          
Common stock, shares authorized (in Shares) 1,040,000 1,040,000 1,040,000 1,040,000  
Common stock, shares outstanding (in Shares) 881,452 881,452 881,452 881,452  
Common stock, shares issued (in Shares) 881,452 881,452 881,452 881,452  
Common stock, par value (in Dollars per share) $ 1 $ 1 $ 1 $ 1  
Restricted Stock [Member]          
NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE [Abstract]          
Shares excluded from calculations of diluted net income per share (in Shares) 0 0 0 0