XML 12 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Document And Entity Information - shares
 3 Months Ended
Mar. 31, 2021
May 07, 2021
Document Information Line Items    
Entity Registrant Name SB FINANCIAL GROUP, INC.  
Document Type 10-Q  
Current Fiscal Year End Date --12-31  
Entity Common Stock, Shares Outstanding   7,230,953
Amendment Flag false  
Entity Central Index Key 0000767405  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Document Period End Date Mar. 31, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity File Number 1-36785  
Entity Incorporation, State or Country Code OH  
Entity Interactive Data Current Yes