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Acquisitions - Additional Information (Details) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 17, 2021 USD ($) county business | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Asset Acquisition [Line Items] |  |  |  |
Net cash received in branch acquisition |  | $ 0 | $ 622,179 | $ 0
Goodwill |  | $ 155,211 | $ 154,572 | $ 151,238
TCF National Bank |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Number of businesses acquired | business | 14 |  |  |
Number of businesses acquired in country | county | 11 |  |  |
Net cash received in branch acquisition | $ 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 |  |  |
Goodwill | 3,973 |  |  |
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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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
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