Annual report pursuant to Section 13 and 15(d)

Allowance for Loan and Lease Losses - Summary of Information Regarding Impaired Loans Evaluated for Specific Reserves (Details)

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Allowance for Loan and Lease Losses - Summary of Information Regarding Impaired Loans Evaluated for Specific Reserves (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Financing Receivable Impaired [Line Items]      
Impaired Loans - with Allowance, Recorded Investment $ 4,202 $ 5,810  
Impaired Loans - with Allowance, Unpaid Principal Balance 4,174 5,829  
Impaired Loans - with Allowance, Related Allowance 3,593 4,079  
Impaired Loans - with No Allowance, Recorded Investment 1,102 3,019  
Impaired Loans - with No Allowance, Unpaid Principal Balance 1,104 3,006  
Average 6,317 7,060 $ 5,287
Commercial and Industrial Loans      
Financing Receivable Impaired [Line Items]      
Impaired Loans - with Allowance, Recorded Investment 3,700 4,407  
Impaired Loans - with Allowance, Unpaid Principal Balance 3,673 4,453  
Impaired Loans - with Allowance, Related Allowance 3,276 3,488  
Impaired Loans - with No Allowance, Recorded Investment 429 566  
Impaired Loans - with No Allowance, Unpaid Principal Balance 431 571  
Average 5,045 4,864 2,790
Real Estate | 1-4 Single Family Residential      
Financing Receivable Impaired [Line Items]      
Impaired Loans - with Allowance, Recorded Investment   5  
Impaired Loans - with Allowance, Unpaid Principal Balance   5  
Impaired Loans - with Allowance, Related Allowance   1  
Impaired Loans - with No Allowance, Recorded Investment 173 1,632  
Impaired Loans - with No Allowance, Unpaid Principal Balance 173 1,612  
Average 182 1,658 2,011
Real Estate | Construction, Land and Development      
Financing Receivable Impaired [Line Items]      
Impaired Loans - with No Allowance, Recorded Investment   217  
Impaired Loans - with No Allowance, Unpaid Principal Balance   215  
Average   216 219
Real Estate | Commercial Real Estate (Including Multifamily)      
Financing Receivable Impaired [Line Items]      
Impaired Loans - with Allowance, Recorded Investment 441 1,308  
Impaired Loans - with Allowance, Unpaid Principal Balance 441 1,281  
Impaired Loans - with Allowance, Related Allowance 265 500  
Impaired Loans - with No Allowance, Recorded Investment 500 528  
Impaired Loans - with No Allowance, Unpaid Principal Balance 500 528  
Average 1,022 271 241
Consumer Loans and Leases      
Financing Receivable Impaired [Line Items]      
Impaired Loans - with Allowance, Recorded Investment 48 90  
Impaired Loans - with Allowance, Unpaid Principal Balance 48 90  
Impaired Loans - with Allowance, Related Allowance 48 90  
Impaired Loans - with No Allowance, Recorded Investment   24  
Impaired Loans - with No Allowance, Unpaid Principal Balance   28  
Average 51 51 $ 26
Municipal and Other Loans      
Financing Receivable Impaired [Line Items]      
Impaired Loans - with Allowance, Recorded Investment 13    
Impaired Loans - with Allowance, Unpaid Principal Balance 12    
Impaired Loans - with Allowance, Related Allowance 4    
Impaired Loans - with No Allowance, Recorded Investment   52  
Impaired Loans - with No Allowance, Unpaid Principal Balance   $ 52  
Average $ 17