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Acquisitions - Additional Information (Details) $ in Thousands | Sep. 17, 2021 USD ($) business county | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | --- | ---
Asset Acquisition [Line Items] |  |  |
Acquisition of goodwill |  | $ 154,572 | $ 154,572
TCF National Bank |  |  |
Asset Acquisition [Line Items] |  |  |
Number of businesses acquired | business | 14 |  |
Number of businesses acquired in country | county | 11 |  |
Cash acquired | $ 618,167 |  |
Loans | 212,000 |  |
Fixed assets | 6,901 |  |
Cash and due from banks | $ 4,012 |  |
Premium percentage on deposits | 1.75% |  |
Customer deposits | $ 846,400 |  |
Acquisition of goodwill | 3,334 |  |
TCF National Bank | Core Deposit Intangible |  |  |
Asset Acquisition [Line Items] |  |  |
Core deposit intangible | $ 1,600 |  |
Core deposit intangible amortization period | 10 years |  |

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