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Cover Page
Jan. 10, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jan. 10, 2025
Entity Registrant Name ORIGIN BANCORP, INC.
Entity Central Index Key 0001516912
Amendment Flag false
Entity Incorporation, State or Country Code LA
Entity File Number 001-38487
Entity Tax Identification Number 72-1192928
Entity Address, Address Line One 500 South Service Road East
Entity Address, City or Town Ruston
Entity Address, State or Province LA
Entity Address, Postal Zip Code 71270
City Area Code 318
Local Phone Number 255-2222
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $5.00 per share
Trading Symbol OBK
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Addresses [Line Items]  
Entity Address, Address Line One 500 South Service Road East
Document Type 8-K
Entity Registrant Name ORIGIN BANCORP, INC.