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Loans and Allowance for Loan and Lease Losses - Narrative (Details) $ in Thousands | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2022 USD ($) Loan | Dec. 31, 2021 USD ($) Loan | Jun. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Loans and leases, net of unearned interest | $ 4,000 | $ 6,300 |  |  |  |
Allowance for loan and lease losses | 18,480 | 14,597 | $ 16,876 | $ 14,233 | $ 14,716 | $ 13,382
Loans and leases receivable, net, carrying amount | 3,303,977 | 3,089,799 |  |  |  |
Financing receivable, modifications, recorded investment | $ 543 | $ 819 |  |  |  |
Number of troubled debt restructured loans | Loan | 0 | 0 |  |  |  |
Nonaccruing | Six Loans With Four Relationships |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment | $ 148 |  |  |  |  |
Nonaccruing | Eight Loans With Six Relationships |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment |  | $ 384 |  |  |  |
PPP Loans | Small Business Administration |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Loans and leases receivable, net, carrying amount | 2,800 | 111,300 |  |  |  |
Commercial real estate | Commercial portfolio |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 12,522 | 9,415 | 11,991 | 8,962 | 9,977 | 8,655
Financing receivable, modifications, recorded investment | 120 | 320 |  |  |  |
Commercial real estate | Commercial portfolio | Nonaccruing | Two Borrowers |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment |  | 320 |  |  |  |
Commercial real estate | Consumer | Nonaccruing |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment | 120 |  |  |  |  |
Commercial real estate - construction | Commercial portfolio |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 51 | 38 | 46 | 133 | 130 | 134
Financing receivable, modifications, recorded investment |  | 22 |  |  |  |
Commercial real estate - construction | Commercial portfolio | Nonaccruing |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment |  | 22 |  |  |  |
Commercial and industrial | Commercial portfolio |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 4,549 | 3,439 | 3,671 | 3,370 | 3,165 | 3,066
Financing receivable, modifications, recorded investment |  | 5 |  |  |  |
Commercial and industrial | Commercial portfolio | Nonaccruing |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment |  | 5 |  |  |  |
Residential mortgage | Consumer |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for loan and lease losses | 573 | 459 | $ 502 | $ 490 | $ 499 | $ 429
Financing receivable, modifications, recorded investment | 423 | 472 |  |  |  |
Residential mortgage | Consumer | Accruing | Two Unrelated Borrowers |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment | 396 | 435 |  |  |  |
Residential mortgage | Consumer | Nonaccruing |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Financing receivable, modifications, recorded investment | $ 27 | $ 37 |  |  |  |

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