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Business Combinations - Additional Information (Details) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 17, 2020 USD ($) lease $ / shares shares | Sep. 30, 2021 USD ($) category | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) category | Sep. 30, 2020 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Acquisition related costs |  | $ 0 | $ 3,400,000 | $ 0 | $ 3,900,000
Number of loan portfolio segments | category |  | 2 |  | 2 |
Bank of Akron |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Share price (in dollars per share) | $ / shares | $ 215.00 |  |  |  |
Share conversion ratio | 6.6729 |  |  |  |
Percentage of shares exchanged | 75.00% |  |  |  |
Total merger consideration | $ 40,793,000 |  |  |  |
Value of cash consideration for Akron common stock exchanged for cash | $ 16,126,000 |  |  |  |
Equity interest issued (in shares) | shares | 1,501,321 |  |  |  |
Value of stock consideration assigned to Akron common shares exchanged for stock paid to shareholders | $ 24,667,000 |  |  |  |
Equity interest issued, value assigned (in USD per share) | $ / shares | $ 16.43 |  |  |  |
Core deposit intangible | $ 613,000 |  |  |  |
Fair value interest rate premium | $ 5,000,000 |  |  |  |
Goodwill adjustments |  |  |  | $ 0 |
Number of lease agreements | lease | 1 |  |  |  |
Bank of Akron | Core Deposits |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Core deposit intangible | $ 613,000 |  |  |  |

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