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Regulatory Capital - Capital Amounts and Ratios (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Common Equity Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,103,960 | $ 1,081,686
Minimum Capital Requirement | 407,938 | 406,980
Minimum To Be Well Capitalized | $ 589,243 | $ 587,861
Common Equity Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 12.18% | 11.96%
Minimum Capital Requirement | 4.50% | 4.50%
Minimum To Be Well Capitalized | 6.50% | 6.50%
Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,177,960 | $ 1,155,686
Minimum Capital Requirement | 543,917 | 542,640
Minimum To Be Well Capitalized | $ 725,222 | $ 723,521
Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 12.99% | 12.78%
Minimum Capital Requirement | 6.00% | 6.00%
Minimum To Be Well Capitalized | 8.00% | 8.00%
Total Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,486,577 | $ 1,457,994
Minimum Capital Requirement | 725,222 | 723,521
Minimum To Be Well Capitalized | $ 906,528 | $ 904,401
Total Capital to Risk Weighted Assets, Ratio |  |
Actual | 16.40% | 16.12%
Minimum Capital Requirement | 8.00% | 8.00%
Minimum To Be Well Capitalized | 10.00% | 10.00%
Leverage Ratio of Tier 1 Capital to Average Assets, Amount |  |
Actual | $ 1,177,960 | $ 1,081,686
Minimum Capital Requirement | $ 485,472 | $ 489,124
Leverage Ratio of Tier 1 Capital to Average Assets, Ratio |  |
Actual | 9.71% | 9.45%
Minimum Capital Requirement | 4.00% | 4.00%
Busey Bank |  |
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,325,556 | $ 1,306,716
Minimum Capital Requirement | 406,788 | 405,736
Minimum To Be Well Capitalized | $ 587,582 | $ 586,063
Common Equity Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 14.66% | 14.49%
Minimum Capital Requirement | 4.50% | 4.50%
Minimum To Be Well Capitalized | 6.50% | 6.50%
Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,325,556 | $ 1,306,716
Minimum Capital Requirement | 542,383 | 540,981
Minimum To Be Well Capitalized | $ 723,178 | $ 721,308
Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual | 14.66% | 14.49%
Minimum Capital Requirement | 6.00% | 6.00%
Minimum To Be Well Capitalized | 8.00% | 8.00%
Total Capital to Risk Weighted Assets, Amount |  |
Actual | $ 1,409,173 | $ 1,384,024
Minimum Capital Requirement | 723,178 | 721,308
Minimum To Be Well Capitalized | $ 903,972 | $ 901,635
Total Capital to Risk Weighted Assets, Ratio |  |
Actual | 15.59% | 15.35%
Minimum Capital Requirement | 8.00% | 8.00%
Minimum To Be Well Capitalized | 10.00% | 10.00%
Leverage Ratio of Tier 1 Capital to Average Assets, Amount |  |
Actual | $ 1,325,556 | $ 1,306,716
Minimum Capital Requirement | 484,256 | 487,541
Minimum To Be Well Capitalized | $ 605,320 | $ 609,426
Leverage Ratio of Tier 1 Capital to Average Assets, Ratio |  |
Actual | 10.95% | 10.72%
Minimum Capital Requirement | 4.00% | 4.00%
Minimum To Be Well Capitalized | 5.00% | 5.00%

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