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Regulatory Capital (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Common Equity Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual, Amount | $ 1,011,861 | $ 995,874
Minimum Capital Requirement, Amount | 382,962 | 378,334
Minimum To Be Well Capitalized, Amount | $ 553,167 | $ 546,482
Common Equity Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual, Ratio (as a percent) | 11.89% | 11.85%
Minimum Capital Requirement, Ratio (as a percent) | 4.50% | 4.50%
Minimum To Be Well Capitalized, Ratio (as a percent) | 6.50% | 6.50%
Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual, Amount | $ 1,085,861 | $ 1,069,874
Minimum Capital Requirement, Amount | 510,615 | 504,445
Minimum To Be Well Capitalized, Amount | $ 680,821 | $ 672,594
Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual, Ratio (as a percent) | 12.76 | 12.73
Minimum Capital Requirement, Ratio (as a percent) | 6.00 | 6.00
Minimum To Be Well Capitalized, Ratio (as a percent) | 8.00 | 8.00
Total Capital to Risk Weighted Assets, Amount |  |
Actual, Amount | $ 1,344,541 | $ 1,320,187
Minimum Capital Requirement, Amount | 680,821 | 672,594
Minimum To Be Well Capitalized, Amount | $ 851,026 | $ 840,742
Total Capital to Risk Weighted Assets, Ratio |  |
Actual, Ratio (as a percent) | 15.80 | 15.70
Minimum Capital Requirement, Ratio (as a percent) | 8.00 | 8.00
Minimum To Be Well Capitalized, Ratio (as a percent) | 10.00 | 10.00
Leverage Ratio of Tier 1 Capital to Average Assets, Amount |  |
Actual, Amount | $ 1,085,861 | $ 1,069,874
Minimum Capital Requirement, Amount | $ 494,948 | $ 502,336
Leverage Ratio of Tier 1 Capital to Average Assets, Ratio |  |
Actual, Ratio (as a percent) | 8.78 | 8.52
Minimum Capital Requirement, Ratio (as a percent) | 4.00 | 4.00
Busey Bank |  |
Common Equity Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual, Amount | $ 1,247,370 | $ 1,241,303
Minimum Capital Requirement, Amount | 381,747 | 377,096
Minimum To Be Well Capitalized, Amount | $ 551,413 | $ 544,695
Common Equity Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual, Ratio (as a percent) | 14.70% | 14.81%
Minimum Capital Requirement, Ratio (as a percent) | 4.50% | 4.50%
Minimum To Be Well Capitalized, Ratio (as a percent) | 6.50% | 6.50%
Tier 1 Capital to Risk Weighted Assets, Amount |  |
Actual, Amount | $ 1,247,370 | $ 1,241,303
Minimum Capital Requirement, Amount | 508,996 | 502,795
Minimum To Be Well Capitalized, Amount | $ 678,662 | $ 670,394
Tier 1 Capital to Risk Weighted Assets, Ratio |  |
Actual, Ratio (as a percent) | 14.70 | 14.81
Minimum Capital Requirement, Ratio (as a percent) | 6.00 | 6.00
Minimum To Be Well Capitalized, Ratio (as a percent) | 8.00 | 8.00
Total Capital to Risk Weighted Assets, Amount |  |
Actual, Amount | $ 1,321,050 | $ 1,306,616
Minimum Capital Requirement, Amount | 678,662 | 670,394
Minimum To Be Well Capitalized, Amount | $ 848,327 | $ 837,992
Total Capital to Risk Weighted Assets, Ratio |  |
Actual, Ratio (as a percent) | 15.57 | 15.59
Minimum Capital Requirement, Ratio (as a percent) | 8.00 | 8.00
Minimum To Be Well Capitalized, Ratio (as a percent) | 10.00 | 10.00
Leverage Ratio of Tier 1 Capital to Average Assets, Amount |  |
Actual, Amount | $ 1,247,370 | $ 1,241,303
Minimum Capital Requirement, Amount | 493,615 | 501,104
Minimum To Be Well Capitalized, Amount | $ 617,019 | $ 626,379
Leverage Ratio of Tier 1 Capital to Average Assets, Ratio |  |
Actual, Ratio (as a percent) | 10.11 | 9.91
Minimum Capital Requirement, Ratio (as a percent) | 4.00 | 4.00
Minimum To Be Well Capitalized, Ratio (as a percent) | 5.00 | 5.00

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