REGULATORY CAPITAL (Tables)

12 Months Ended

Dec. 31, 2022

Banking and Thrift, Other Disclosure [Abstract]

Schedule of applicable holding company and bank regulatory capital requirements

The following tables summarize regulatory capital requirements applicable to the Company and its subsidiary bank (dollars in thousands):

	As of December 31, 2022
	Actual				Minimum Capital Requirement				Minimum To Be Well Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
Common Equity Tier 1 Capital to Risk Weighted Assets
Consolidated	$	1,081,686	11.96	%	$	406,980	4.50	%	$	587,861	6.50	%
Busey Bank	1,306,716		14.49	%	405,736		4.50	%	586,063		6.50	%
Tier 1 Capital to Risk Weighted Assets
Consolidated	$	1,155,686	12.78	%	$	542,640	6.00	%	$	723,521	8.00	%
Busey Bank	1,306,716		14.49	%	540,981		6.00	%	721,308		8.00	%
Total Capital to Risk Weighted Assets
Consolidated	$	1,457,994	16.12	%	$	723,521	8.00	%	$	904,401	10.00	%
Busey Bank	1,384,024		15.35	%	721,308		8.00	%	901,635		10.00	%
Leverage Ratio of Tier 1 Capital to Average Assets
Consolidated	$	1,155,686	9.45	%	$	489,124	4.00	%	N/A		N/A
Busey Bank	1,306,716		10.72	%	487,541		4.00	%	$	609,426	5.00	%

	As of December 31, 2021
	Actual				Minimum Capital Requirement				Minimum To Be Well Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
Common Equity Tier 1 Capital to Risk Weighted Assets
Consolidated	$	995,874	11.85	%	$	378,334	4.50	%	$	546,482	6.50	%
Busey Bank	1,241,303		14.81	%	377,096		4.50	%	544,695		6.50	%
Tier 1 Capital to Risk Weighted Assets
Consolidated	$	1,069,874	12.73	%	$	504,445	6.00	%	$	672,594	8.00	%
Busey Bank	1,241,303		14.81	%	502,795		6.00	%	670,394		8.00	%
Total Capital to Risk Weighted Assets
Consolidated	$	1,320,187	15.70	%	$	672,594	8.00	%	$	840,742	10.00	%
Busey Bank	1,306,616		15.59	%	670,394		8.00	%	837,992		10.00	%
Leverage Ratio of Tier 1 Capital to Average Assets
Consolidated	$	1,069,874	8.52	%	$	502,336	4.00	%	N/A		N/A
Busey Bank	1,241,303		9.91	%	501,104		4.00	%	$	626,379	5.00	%