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Acquisition of Riverview Financial Corporation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Nov. 30, 2021 | Nov. 24, 2021 | Sep. 30, 2022 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |  |
Goodwill |  |  | $ 113,871 | $ 113,835
Adjustment to goodwill |  |  | 36 |
Riverview |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Shares of acquirer ratio of common stock | 48.33% |  |  |
Business combination, consideration transferred, equity interests issued and issuable | $ 142,192 |  |  |
Restricted stock shares paid out in cash | 2,500 |  |  |
Payments to acquire businesses gross | $ 792 |  |  |
Business Combination, Consideration Transferred | 142,984 |  |  |
Goodwill | 51,031 |  | 51,031 |
Core deposit intangible | 4,100 |  |  |
Customer list intangible | $ 2,200 |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 10 years |  |  |
Fair value of purchased loans | $ 837,505 |  | $ 837,505 |
Riverview | Common Stock |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, consideration transferred, equity interests issued and issuable | $ 142,200 |  |  |
Per share price | $ 31.46 | $ 30.76 |  |
Options outstanding to purchase common stock (in shares) |  | 172,964 |  |
Riverview | Stock Awards |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses gross | $ 776 |  |  |
Riverview | Fractional Shares |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses gross | $ 16 |  |  |

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