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Loans, Collateral Dependent Loans and Loans With/Without Specific Valuation Allowance (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
Loan
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Loans with a specific valuation allowance [Abstract]      
Specific Allowance   $ 1,212 $ 801
Total loans [Abstract]      
Recorded Balance   57,771 46,366
Unpaid Contractual Principal Balance   61,786 50,956
Specific Allowance   1,212 801
Average Investment in Impaired Loans   55,700 47,097
Interest Income Recognized   2,371 2,171
Commercial [Member] | Collateral Pledged [Member]      
Loans with a specific valuation allowance [Abstract]      
Specific Allowance $ 450    
Total loans [Abstract]      
Number of Loans | Loan 22    
Recorded Balance $ 63,574    
Specific Allowance 450    
Commercial [Member] | Hotel/Motel [Member] | Collateral Pledged [Member]      
Loans with a specific valuation allowance [Abstract]      
Specific Allowance $ 250    
Total loans [Abstract]      
Number of Loans | Loan 5    
Recorded Balance $ 26,194    
Specific Allowance 250    
Commercial [Member] | Commercial Real Estate Residential [Member] | Collateral Pledged [Member]      
Loans with a specific valuation allowance [Abstract]      
Specific Allowance $ 0    
Total loans [Abstract]      
Number of Loans | Loan 4    
Recorded Balance $ 7,833    
Specific Allowance 0    
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Collateral Pledged [Member]      
Loans with a specific valuation allowance [Abstract]      
Specific Allowance $ 200    
Total loans [Abstract]      
Number of Loans | Loan 12    
Recorded Balance $ 24,497    
Specific Allowance 200    
Commercial [Member] | Commercial Other [Member]      
Loans without a specific valuation allowance [Abstract]      
Recorded Balance   7,829 8,285
Unpaid Contractual Principal Balance   9,489 9,982
Average Investment in Impaired Loans   9,889 8,774
Interest Income Recognized   460 530
Loans with a specific valuation allowance [Abstract]      
Recorded Balance   3,244 473
Unpaid Contractual Principal Balance   3,244 473
Specific Allowance   886 146
Average Investment in Impaired Loans   1,323 285
Interest Income Recognized   29 16
Total loans [Abstract]      
Recorded Balance   11,073 8,758
Unpaid Contractual Principal Balance   12,733 10,455
Specific Allowance   886 146
Average Investment in Impaired Loans   11,212 9,059
Interest Income Recognized   489 546
Commercial [Member] | Commercial Other [Member] | Collateral Pledged [Member]      
Loans with a specific valuation allowance [Abstract]      
Specific Allowance $ 0    
Total loans [Abstract]      
Number of Loans | Loan 1    
Recorded Balance $ 5,050    
Specific Allowance 0    
Commercial [Member] | Commercial Other [Member] | Collateral Pledged by Leasehold Mortgage [Member]      
Total loans [Abstract]      
Recorded Balance $ 5,100    
Commercial [Member] | Construction [Member]      
Loans without a specific valuation allowance [Abstract]      
Recorded Balance   2,836 4,100
Unpaid Contractual Principal Balance   2,837 4,100
Average Investment in Impaired Loans   3,234 3,923
Interest Income Recognized   170 171
Loans with a specific valuation allowance [Abstract]      
Recorded Balance   174 127
Unpaid Contractual Principal Balance   174 127
Specific Allowance   99 50
Average Investment in Impaired Loans   215 42
Interest Income Recognized   11 0
Total loans [Abstract]      
Recorded Balance   3,010 4,227
Unpaid Contractual Principal Balance   3,011 4,227
Specific Allowance   99 50
Average Investment in Impaired Loans   3,449 3,965
Interest Income Recognized   181 171
Commercial [Member] | Real Estate [Member]      
Loans without a specific valuation allowance [Abstract]      
Recorded Balance   40,346 29,645
Unpaid Contractual Principal Balance   41,557 31,409
Average Investment in Impaired Loans   36,976 30,250
Interest Income Recognized   1,601 1,412
Loans with a specific valuation allowance [Abstract]      
Recorded Balance   1,033 1,854
Unpaid Contractual Principal Balance   2,176 2,983
Specific Allowance   227 605
Average Investment in Impaired Loans   1,678 2,051
Interest Income Recognized   15 1
Total loans [Abstract]      
Recorded Balance   41,379 31,499
Unpaid Contractual Principal Balance   43,733 34,392
Specific Allowance   227 605
Average Investment in Impaired Loans   38,654 32,301
Interest Income Recognized   1,616 1,413
Residential [Member] | Construction [Member]      
Loans without a specific valuation allowance [Abstract]      
Recorded Balance     0
Unpaid Contractual Principal Balance     0
Average Investment in Impaired Loans     106
Interest Income Recognized     0
Loans with a specific valuation allowance [Abstract]      
Specific Allowance     0
Total loans [Abstract]      
Recorded Balance     0
Unpaid Contractual Principal Balance     0
Specific Allowance     0
Average Investment in Impaired Loans     106
Interest Income Recognized     0
Residential [Member] | Real Estate [Member]      
Loans without a specific valuation allowance [Abstract]      
Recorded Balance   2,309 1,882
Unpaid Contractual Principal Balance   2,309 1,882
Average Investment in Impaired Loans   2,385 1,666
Interest Income Recognized   85 41
Loans with a specific valuation allowance [Abstract]      
Specific Allowance   0 0
Total loans [Abstract]      
Recorded Balance   2,309 1,882
Unpaid Contractual Principal Balance   2,309 1,882
Specific Allowance   0 0
Average Investment in Impaired Loans   2,385 1,666
Interest Income Recognized   $ 85 $ 41