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Cover
Dec. 13, 2024
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Dec. 13, 2024
Entity File Number 0-15950
Entity Registrant Name First Busey Corporation
Entity Central Index Key 0000314489
Entity Tax Identification Number 37-1078406
Entity Incorporation, State or Country Code NV
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
Written Communications true
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.001 per share
Trading Symbol BUSE
Security Exchange Name NASDAQ
Entity Emerging Growth Company false