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Non-Performing Assets Including Troubled Debt Restructurings (TDR) - Additional information (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
loan
Dec. 31, 2021
USD ($)
loan
ALL reserve for TDR's $ 128,000 $ 132,000
Decrease in loan modifications to COVID-19 $ 36,000  
Percentage of decrease in balance of loan modifications 0.50%  
Accrued interest receivable due to loan modification $ 533,000  
Number of loans | loan 11 11
Commercial real estate and commercial loan portfolios    
Number of loans | loan 5  
Second payment deferral    
Balance of loans modified $ 7,500,000  
Complete payment deferrals    
Number of loans | loan 5 5