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v3.22.0.1

Acquisition and Divestiture Activity (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
May 30, 2021 USD ($) | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) branch
Business Acquisition [Line Items] |  |  |
Total loans |  | $ 13,601,846 | $ 13,786,479
Assets |  | 24,453,564 | 22,960,622
Deposits |  | $ 18,569,195 | $ 17,037,453
Share price (in dollars per share) | $ / shares |  | $ 18.12 |
Transaction and integration costs associated with the acquisition |  | $ 11,000 |
Number of banking centers to be closed | branch |  |  | 31
Wisconsin and Indiana |  |  |
Business Acquisition [Line Items] |  |  |
Number of banking centers to be closed | branch |  |  | 10
Michigan |  |  |
Business Acquisition [Line Items] |  |  |
Number of banking centers to be closed | branch |  |  | 5
Minnesota |  |  |
Business Acquisition [Line Items] |  |  |
Number of banking centers to be closed | branch |  |  | 4
Kentucky |  |  |
Business Acquisition [Line Items] |  |  |
Number of banking centers to be closed | branch |  |  | 2
First Midwest |  |  |
Business Acquisition [Line Items] |  |  |
Total loans |  | 14,665,000 |
Assets |  | 21,778,000 |
Deposits |  | $ 17,191,000 |
First Midwest |  |  |
Business Acquisition [Line Items] |  |  |
Shares exchange ratio | 1.1336 |  |
Transaction value | $ 2,400,000 |  |
First Midwest | Former First Midwest Stockholders |  |  |
Business Acquisition [Line Items] |  |  |
Stock merger acquisition ratio | 44.00% |  |
First Midwest | Series A Preferred Stock |  |  |
Business Acquisition [Line Items] |  |  |
Dividend rate | 7.00% |  |
First Midwest | Series C Preferred Stock |  |  |
Business Acquisition [Line Items] |  |  |
Dividend rate | 7.00% |  |

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