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Acquisition of Riverview Financial Corporation (Narrative) (Details) - USD ($) | Nov. 30, 2021 | Nov. 24, 2021 | Mar. 31, 2022 | Dec. 31, 2021
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Business Acquisition [Line Items] |  |  |  |
Goodwill |  |  | $ 113,835,000 | $ 113,835,000
Riverview [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition completion date | Nov. 30, 2021 |  |  |
Shares of acquirer ratio of common stock | 48.33% |  |  |
Business combination, consideration transferred, equity interests issued and issuable | $ 142,192,000 |  |  |
Restricted stock shares paid out in cash | 2,500 |  |  |
Payments to acquire businesses gross | $ 792,000 |  |  |
Business combination consideration transferred | 142,984,000 |  |  |
Goodwill | 50,995,000 |  |  |
Core deposit intangible | 4,096,000 |  |  |
Customer list intangible | $ 2,160,000 |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 10 years |  |  |
Fair value of purchased loans | $ 837,505,000 |  |  |
Riverview [Member] | Common Stock [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, consideration transferred, equity interests issued and issuable | $ 142,192,000 |  |  |
Per share price | $ 31.46 | $ 30.76 |  |
Options outstanding to purchase common stock |  | 172,964 |  |
Riverview [Member] | Stock Awards [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses gross | $ 776,000 |  |  |
Riverview [Member] | Fractional Shares [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses gross | $ 16,000 |  |  |

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