Document and Entity Information
Jan. 21, 2022
Cover [Abstract]  
Entity Central Index Key 0001130144
Document Type 8-K
Document Period End Date Jan. 21, 2022
Entity File Number 000-33063
Entity Registrant Name SIERRA BANCORP
Entity Incorporation, State or Country Code CA
Entity Tax Identification Number 33-0937517
Entity Address, Address Line One 86 North Main Street
Entity Address, City or Town Porterville
Entity Address, State or Province CA
Entity Address, Postal Zip Code 93257
City Area Code 559
Local Phone Number 782-4900
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, no par value
Trading Symbol BSRR
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Flag false