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Cover - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Feb. 20, 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 001-13901    
Entity Registrant Name AMERIS BANCORP    
Entity Incorporation, State or Country Code GA    
Entity Tax Identification Number 58-1456434    
Entity Address, Address Line One 3490 Piedmont Road N.E., Suite 1550    
Entity Address, City or Town Atlanta    
Entity Address, State or Province GA    
Entity Address, Postal Zip Code 30305    
City Area Code 404    
Local Phone Number 639-6500    
Title of 12(b) Security Common Stock, par value $1 per share    
Trading Symbol ABCB    
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 [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 2,230
Entity Common Stock, Shares Outstanding   69,030,167  
Documents Incorporated by Reference
Portions of the registrant’s Proxy Statement for the 2024 Annual Meeting of Shareholders are incorporated into Part III hereof by reference.
    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000351569