XML 16 R1.htm IDEA: XBRL DOCUMENT v3.24.0.1
Cover Page - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2023
Feb. 22, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 0-15950    
Entity Registrant Name FIRST BUSEY CORPORATION    
Entity Incorporation, State or Country Code NV    
Entity Tax Identification Number 37-1078406    
Entity Address, Address Line One 100 W. University Ave.    
Entity Address, City or Town Champaign    
Entity Address, State or Province IL    
Entity Address, Postal Zip Code 61820    
City Area Code 217    
Local Phone Number 365-4544    
Title of 12(b) Security Common Stock ($0.001 par value)    
Trading Symbol BUSE    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Public Float     $ 1.0
Entity Common Stock, Shares Outstanding   55,247,094  
Documents Incorporated by Reference
Portions of the definitive Proxy Statement for the 2024 Annual Meeting of Stockholders of First Busey Corporation to be held May 22, 2024, are incorporated by reference in this Form 10-K in response to Part III.
   
Entity Central Index Key 0000314489    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Amendment Flag false