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Borrowed Funds and Subordinated Debentures - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
loan
Dec. 31, 2019
Debt Instrument [Line Items]      
Assets $ 10,000,000    
Subordinated Debentures Subject to Mandatory Redemption      
Debt Instrument [Line Items]      
Maximum period to defer interest payment without default 5 years    
Interest rate   3.435% 3.435%
FHLB Adjustable Rate Advance      
Debt Instrument [Line Items]      
FHLB amount of advances $ 0 $ 30,000  
FHLB Fixed Rate Advance      
Debt Instrument [Line Items]      
FHLB advances, maximum amount available 40,000 $ 40,000  
1.810% Due August 22, 2024 | FHLB Fixed Rate Advance      
Debt Instrument [Line Items]      
FHLB amount of advances $ 40,000    
Interest rate 1.81%    
One 20 Million Advance | FHLB Adjustable Rate Advance      
Debt Instrument [Line Items]      
Number of FHLB advances | loan   1  
FHLB amount of advances   $ 20,000  
One 10 Million Advance | FHLB Adjustable Rate Advance      
Debt Instrument [Line Items]      
Number of FHLB advances | loan   1  
FHLB amount of advances   $ 10,000