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Fair Value of Financial Instruments - Assets and Liabilities Carried at Fair Value on a Non-recurring Basis, Fair Value (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Other real estate owned $ 0 $ 0 $ 0 $ 239,000
Fair Value, Measurements, Nonrecurring [Member]        
Certain delinquent loans 18,330,000 11,026,000    
Total assets 18,330,000 11,026,000    
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]        
Certain delinquent loans 18,330,000 11,026,000    
Total assets $ 18,330,000 $ 11,026,000