STOCK-BASED COMPENSATION - Schedule of Shares Remaining Available For Issuance Under Busey’s Equity Compensation Plans (Details) |
Jun. 30, 2026
shares
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| 2020 Equity Plan | |
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |
| Shares Remaining Available for Issuance Pursuant to the Plan (in shares) | 2,283,484 |
| ESPP | |
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | |
| Shares Remaining Available for Issuance Pursuant to the Plan (in shares) | 236,152 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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