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SECURITIES - Securities Held to Maturity (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Amortized cost and estimated fair value of securities held to maturity [Abstract]    
Amortized Cost $ 3,790,000 $ 2,469,000
Estimated Fair Value 3,796,000 2,501,000
Unrealized Gains 6,000 32,000
Unrealized Losses 0 0
Amortized Cost    
Within one year 2,171,000  
After one, but within five years 819,000  
After five, but within ten years 800,000  
Total 3,790,000 2,469,000
Fair Value    
Within one year 2,176,000  
After one, but within five years 820,000  
After five, but within ten years 800,000  
Total 3,796,000 2,501,000
Gain (loss) on sale of held-to-maturity securities 0 0
Obligations of states and political subdivisions    
Amortized cost and estimated fair value of securities held to maturity [Abstract]    
Amortized Cost 2,157,000 326,000
Estimated Fair Value 2,157,000 326,000
Amortized Cost    
Total 2,157,000 326,000
Fair Value    
Total 2,157,000 326,000
Time deposits with other financial institutions    
Amortized cost and estimated fair value of securities held to maturity [Abstract]    
Amortized Cost 1,633,000 2,143,000
Estimated Fair Value 1,639,000 2,175,000
Unrealized Gains 6,000 32,000
Unrealized Losses 0 0
Amortized Cost    
Total 1,633,000 2,143,000
Fair Value    
Total $ 1,639,000 $ 2,175,000