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REGULATORY CAPITAL - Schedule of Regulatory Capital Requirements Applicable to Busey and Busey Bank (Details) $ in Thousands | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,219,574 | $ 1,155,973
Minimum Capital Requirement | 398,365 | 397,331
Minimum To Be Well Capitalized | $ 575,416 | $ 573,923
Common Equity Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 0.1378 | 0.1309
Minimum Capital Requirement | 0.0450 | 0.0450
Minimum To Be Well Capitalized | 0.0650 | 0.0650
Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,296,574 | $ 1,229,973
Minimum Capital Requirement | 531,153 | 529,775
Minimum To Be Well Capitalized | $ 708,204 | $ 706,367
Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 0.1465 | 0.1393
Minimum Capital Requirement | 0.0600 | 0.0600
Minimum To Be Well Capitalized | 0.0800 | 0.0800
Total Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,610,247 | $ 1,540,318
Minimum Capital Requirement | 708,204 | 706,367
Minimum To Be Well Capitalized | $ 885,255 | $ 882,958
Total Capital to Risk Weighted Assets, Ratio |  |
Actual | 0.1819 | 0.1744
Minimum Capital Requirement | 0.0800 | 0.0800
Minimum To Be Well Capitalized | 0.1000 | 0.1000
Leverage Ratio of Tier 1 Capital to Average Assets, Amount |  |
Actual | $ 1,296,574 | $ 1,229,973
Minimum Capital Requirement | $ 472,629 | $ 488,315
Leverage Ratio of Tier 1 Capital to Average Assets, Ratio |  |
Actual | 0.1097 | 0.1008
Minimum Capital Requirement | 0.0400 | 0.0400
Busey Bank |  |
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,425,762 | $ 1,362,962
Minimum Capital Requirement | 396,739 | 396,128
Minimum To Be Well Capitalized | $ 573,068 | $ 572,185
Common Equity Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 0.1617 | 0.1548
Minimum Capital Requirement | 0.0450 | 0.0450
Minimum To Be Well Capitalized | 0.0650 | 0.0650
Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,425,762 | $ 1,362,962
Minimum Capital Requirement | 528,985 | 528,171
Minimum To Be Well Capitalized | $ 705,314 | $ 704,228
Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 0.1617 | 0.1548
Minimum Capital Requirement | 0.0600 | 0.0600
Minimum To Be Well Capitalized | 0.0800 | 0.0800
Total Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,510,436 | $ 1,448,307
Minimum Capital Requirement | 705,314 | 704,228
Minimum To Be Well Capitalized | $ 881,642 | $ 880,285
Total Capital to Risk Weighted Assets, Ratio |  |
Actual | 0.1713 | 0.1645
Minimum Capital Requirement | 0.0800 | 0.0800
Minimum To Be Well Capitalized | 0.1000 | 0.1000
Leverage Ratio of Tier 1 Capital to Average Assets, Amount |  |
Actual | $ 1,425,762 | $ 1,362,962
Minimum Capital Requirement | 471,202 | 487,103
Minimum To Be Well Capitalized | $ 589,003 | $ 608,879
Leverage Ratio of Tier 1 Capital to Average Assets, Ratio |  |
Actual | 0.1210 | 0.1119
Minimum Capital Requirement | 0.0400 | 0.0400
Minimum To Be Well Capitalized | 0.0500 | 0.0500

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