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Disclosures About Fair Value of Assets and Liabilities, Financial Instruments not Recorded at Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Carrying Amount [Member]    
Financial Assets [Abstract]    
Cash and due from banks $ 153,901 $ 117,128
Interest-bearing time deposits in other banks 16,412 30,147
Loans, net of allowance 826,974 699,458
Mortgage loans held for sale 324 1,031
Nonmarketable equity securities 1,172 1,100
Interest receivable 4,365 3,954
Financial Liabilities [Abstract]    
Deposits 905,514 757,483
Interest payable 286 636
Fair Value [Member]    
Financial Assets [Abstract]    
Cash and due from banks 153,901 117,128
Interest-bearing time deposits in other banks 16,412 30,147
Loans, net of allowance 826,581 700,481
Mortgage loans held for sale 324 1,031
Nonmarketable equity securities 1,172 1,100
Interest receivable 4,365 3,954
Financial Liabilities [Abstract]    
Deposits 904,928 757,520
Interest payable 286 636
Fair Value [Member] | Level 1 [Member]    
Financial Assets [Abstract]    
Cash and due from banks 153,901 117,128
Interest-bearing time deposits in other banks 0 0
Loans, net of allowance 0 0
Mortgage loans held for sale 0 0
Nonmarketable equity securities 0 0
Interest receivable 0 0
Financial Liabilities [Abstract]    
Deposits 0 0
Interest payable 0 0
Fair Value [Member] | Level 2 [Member]    
Financial Assets [Abstract]    
Cash and due from banks 0 0
Interest-bearing time deposits in other banks 16,412 30,147
Loans, net of allowance 815,223 698,698
Mortgage loans held for sale 324 1,031
Nonmarketable equity securities 1,172 1,100
Interest receivable 4,365 3,954
Financial Liabilities [Abstract]    
Deposits 904,928 757,520
Interest payable 286 636
Fair Value [Member] | Level 3 [Member]    
Financial Assets [Abstract]    
Cash and due from banks 0 0
Interest-bearing time deposits in other banks 0 0
Loans, net of allowance 11,358 1,783
Mortgage loans held for sale 0 0
Nonmarketable equity securities 0 0
Interest receivable 0 0
Financial Liabilities [Abstract]    
Deposits 0 0
Interest payable $ 0 $ 0