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Loans and Leases and Allowance for Loan and Lease Losses - ALL by Loan Classification (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | $ 19,295 | $ 18,310 | $ 18,346 | $ 18,817 | $ 16,254 | $ 10,243
All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 18,868 |  | 18,037 |  |  |
Purchased Credit Impaired Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 427 |  | 309 |  |  |
Performing [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 18,282 |  | 17,800 |  |  |
Impaired Loans [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 586 |  | 237 |  |  |
Commercial Real Estate [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 9,405 | 8,382 | 7,579 | 7,729 | 6,595 | 4,508
Commercial Real Estate [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 9,344 |  | 7,579 |  |  |
Commercial Real Estate [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 61 |  |  |  |  |
Commercial Real Estate [Member] | Performing [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 8,927 |  | 7,579 |  |  |
Commercial Real Estate [Member] | Impaired Loans [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 417 |  |  |  |  |
Consumer Real Estate [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 3,541 | 3,323 | 3,471 | 3,444 | 3,313 | 2,576
Consumer Real Estate [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 3,386 |  | 3,383 |  |  |
Consumer Real Estate [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 155 |  | 88 |  |  |
Consumer Real Estate [Member] | Performing [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 3,316 |  | 3,267 |  |  |
Consumer Real Estate [Member] | Impaired Loans [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 70 |  | 116 |  |  |
Construction and Land Development [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 2,218 | 2,061 | 2,076 | 2,060 | 1,795 | 1,127
Construction and Land Development [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 2,218 |  | 2,076 |  |  |
Construction and Land Development [Member] | Performing [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 2,218 |  | 2,076 |  |  |
Commercial and Industrial [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 3,801 | 4,442 | 5,107 | 5,463 | 4,443 | 1,957
Commercial and Industrial [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 3,592 |  | 4,889 |  |  |
Commercial and Industrial [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 209 |  | 218 |  |  |
Commercial and Industrial [Member] | Performing [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 3,493 |  | 4,768 |  |  |
Commercial and Industrial [Member] | Impaired Loans [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 99 |  | 121 |  |  |
Leases Portfolio Segment [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 225 |  |  |  |  |
Leases Portfolio Segment [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 225 |  |  |  |  |
Leases Portfolio Segment [Member] | Performing [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 225 |  |  |  |  |
Consumer and Other [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 105 | $ 102 | 113 | $ 121 | $ 108 | $ 75
Consumer and Other [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 103 |  | 110 |  |  |
Consumer and Other [Member] | Purchased Credit Impaired Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 2 |  | 3 |  |  |
Consumer and Other [Member] | Performing [Member] | All Other Loans and leases [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | $ 103 |  | $ 110 |  |  |

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