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Loans and Allowance for Credit Losses - Troubled Debt Restructurings, Excluding Loans Acquired, Segregated by Class of Loans (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 USD ($) loan | Sep. 30, 2022 USD ($) loan | Sep. 30, 2021 loan | Dec. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications | 3 | 4 | 1 |
Loans, Excluding Acquired Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 40 |  | 49
Troubled debt, balance | $ | $ 4,896 | $ 4,896 |  | $ 6,939
Loans, Excluding Acquired Loans | Accruing TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 25 |  | 31
Troubled debt, balance | $ | 1,869 | $ 1,869 |  | $ 4,289
Loans, Excluding Acquired Loans | Nonaccrual TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 15 |  | 18
Troubled debt, balance | $ | $ 3,027 | $ 3,027 |  | $ 2,650
Real Estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications | 3 | 4 | 1 |
Real Estate | Loans, Excluding Acquired Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 37 |  | 45
Troubled debt, balance | $ | $ 3,545 | $ 3,545 |  | $ 5,097
Real Estate | Loans, Excluding Acquired Loans | Accruing TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 25 |  | 29
Troubled debt, balance | $ | 1,869 | $ 1,869 |  | $ 3,853
Real Estate | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 12 |  | 16
Troubled debt, balance | $ | 1,676 | $ 1,676 |  | $ 1,244
Real Estate | Single family residential | Loans, Excluding Acquired Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 36 |  | 42
Troubled debt, balance | $ | 3,544 | $ 3,544 |  | $ 4,283
Real Estate | Single family residential | Loans, Excluding Acquired Loans | Accruing TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 24 |  | 28
Troubled debt, balance | $ | 1,868 | $ 1,868 |  | $ 3,087
Real Estate | Single family residential | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 12 |  | 14
Troubled debt, balance | $ | $ 1,676 | $ 1,676 |  | $ 1,196
Real Estate | Other commercial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications | 3 | 4 | 1 |
Real Estate | Other commercial | Loans, Excluding Acquired Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 1 |  | 3
Troubled debt, balance | $ | $ 1 | $ 1 |  | $ 814
Real Estate | Other commercial | Loans, Excluding Acquired Loans | Accruing TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 1 |  | 1
Troubled debt, balance | $ | 1 | $ 1 |  | $ 766
Real Estate | Other commercial | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 0 |  | 2
Troubled debt, balance | $ | 0 | $ 0 |  | $ 48
Commercial | Loans, Excluding Acquired Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 3 |  | 4
Troubled debt, balance | $ | 1,351 | $ 1,351 |  | $ 1,842
Commercial | Loans, Excluding Acquired Loans | Accruing TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 0 |  | 2
Troubled debt, balance | $ | 0 | $ 0 |  | $ 436
Commercial | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 3 |  | 2
Troubled debt, balance | $ | 1,351 | $ 1,351 |  | $ 1,406
Commercial | Commercial | Loans, Excluding Acquired Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 3 |  | 4
Troubled debt, balance | $ | 1,351 | $ 1,351 |  | $ 1,842
Commercial | Commercial | Loans, Excluding Acquired Loans | Accruing TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 0 |  | 2
Troubled debt, balance | $ | 0 | $ 0 |  | $ 436
Commercial | Commercial | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of loan modifications |  | 3 |  | 2
Troubled debt, balance | $ | $ 1,351 | $ 1,351 |  | $ 1,406

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