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Portfolio Loans - Narrative (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 31, 2021
USD ($)
Mar. 31, 2021
USD ($)
loan
Mar. 31, 2020
USD ($)
loan
Distributions of portfolio loans      
Loans classified as a TDR   $ 500 $ 500
TDRs subsequently classified as non-performing and had payment defaults | loan   0 0
Commercial Loans | Included in non-performing loans      
Distributions of portfolio loans      
Loans classified as a TDR   $ 500 $ 500
Performing loans classified as TDRs | loan   1 3
Commercial Real Estate Loans | Included in non-performing loans      
Distributions of portfolio loans      
Loans classified as a TDR     $ 700
Performing loans classified as TDRs | loan     1
Retail Real Estate | Included in non-performing loans      
Distributions of portfolio loans      
Loans classified as a TDR   $ 100  
TDRs subsequently classified as non-performing and had payment defaults | loan   1  
Residential real estate      
Distributions of portfolio loans      
Loans in the process of foreclosure $ 400    
Maximum | Commercial Real Estate Loans      
Distributions of portfolio loans      
Limit where loans are processed through an expedited underwriting process   $ 1,000  
Watch | Commercial Loans      
Distributions of portfolio loans      
Limit above which loans are annually reviewed   1,000  
Special Mention      
Distributions of portfolio loans      
Limit above which loans are annually reviewed   $ 350