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SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2023
Accounting Policies [Abstract] |
Schedule of estimated useful lives for premises and equipment | The estimated useful lives for premises and equipment are:
Asset Description |  | Estimated Useful Life
Buildings and improvements |  | 3 — 40 years
Furniture and equipment |  | 3 — 10 years
Schedule of impact of the Busey's other asset investments | The following table summarizes the impact of Busey’s other asset investments on the Company’s Consolidated Balance Sheets for the periods indicated (dollars in thousands):
|  |  |  | As of December 31,
|  | Location |  | 2023 |  | 2022
Other asset investments |  |  |  |  |  |
Funded investments |  | Other assets |  | $ | 68,516 |  |  | $ | 58,912 |
Unfunded investments |  | Other assets |  | 58,552 |  |  | 67,437 |
Other asset investments |  |  |  | $ | 127,068 |  |  | $ | 126,349 |
Unfunded investment obligations |  | Other liabilities |  | $ | 58,552 |  |  | $ | 67,437 |

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- Definition Tabular disclosure of the useful life of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References No definition available. + Details
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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 + Details
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