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Cover
Apr. 30, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Apr. 30, 2025
Entity Registrant Name First Busey Corporation
Entity Incorporation, State or Country Code NV
Entity File Number 0-15950
Entity Tax Identification Number 37-1078406
Entity Address, Address Line One 11440 Tomahawk Creek Parkway
Entity Address, State or Province KS
Entity Address, Postal Zip Code 66211
City Area Code (217)
Local Phone Number 365-4544
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.001 par value
Trading Symbol BUSE
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0000314489
Entity Address, City or Town Leawood