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Loans and Allowance for Credit Losses on Loans - Schedule of Collateral-Dependent Non-Accrual Loans (Details) - USD ($) | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit losses | $ 23,330,000 | $ 22,983,000 | $ 22,547,000 | $ 23,023,000
Weighted average ratio of loans value to collateral dependent loans value | 42.00% | 42.00% |  |
Collateral Pledged |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | $ 2,026,000 | $ 2,432,000 |  |
Allowance for credit losses | 3,000 | 0 |  |
Commercial Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 1,255,000 | 1,563,000 |  |
Residential Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 768,000 | 778,000 |  |
Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 3,000 | 91,000 |  |
Commercial real estate loans | Commercial owner-occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit losses | 2,640,000 | 2,487,000 | 2,622,000 | 2,776,000
Commercial real estate loans | Commercial owner-occupied | Collateral Pledged |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 331,000 | 1,563,000 |  |
Allowance for credit losses | 0 | 0 |  |
Commercial real estate loans | Commercial owner-occupied | Commercial Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 331,000 | 1,563,000 |  |
Commercial real estate loans | Commercial owner-occupied | Residential Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 0 | 0 |  |
Commercial real estate loans | Commercial owner-occupied | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 0 | 0 |  |
Commercial real estate loans | Commercial non-owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit losses | 12,701,000 | 12,676,000 | 12,301,000 | 12,739,000
Commercial real estate loans | Commercial non-owner occupied | Collateral Pledged |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit losses | 0 |  |  |
Non-accrual | 924,000 |  |  |
Commercial real estate loans | Commercial non-owner occupied | Commercial Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual | 924,000 |  |  |
Commercial real estate loans | Commercial non-owner occupied | Residential Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual | 0 |  |  |
Commercial real estate loans | Commercial non-owner occupied | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual | 0 |  |  |
Commercial real estate loans | Installment and other consumer loans | Collateral Pledged |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 3,000 | 91,000 |  |
Allowance for credit losses | 3,000 | 0 |  |
Commercial real estate loans | Installment and other consumer loans | Commercial Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 0 | 0 |  |
Commercial real estate loans | Installment and other consumer loans | Residential Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 0 | 0 |  |
Commercial real estate loans | Installment and other consumer loans | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 3,000 | 91,000 |  |
Residential loans | Home equity |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit losses | 538,000 | 558,000 | 549,000 | 595,000
Residential loans | Home equity | Collateral Pledged |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 768,000 | 778,000 |  |
Allowance for credit losses | 0 | 0 |  |
Residential loans | Home equity | Commercial Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 0 | 0 |  |
Residential loans | Home equity | Residential Real Estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 768,000 | 778,000 |  |
Residential loans | Home equity | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Non-accrual loans | 0 | 0 |  |
Residential loans | Other residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit losses | 577,000 | 595,000 | $ 628,000 | $ 644,000
Residential loans | Other residential | Collateral Pledged |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Nonaccrual collateral dependent loans in process of foreclosure | $ 0 | $ 0 |  |

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