Document and Entity Information - shares	9 Months Ended
	Mar. 31, 2017	May 09, 2017
Document and Entity Information:
Entity Registrant Name	Southern Missouri Bancorp, Inc.
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Trading Symbol	smbc
Amendment Flag	false
Entity Central Index Key	0000916907
Current Fiscal Year End Date	--06-30
Entity Common Stock, Shares Outstanding		7,450,041
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3