Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2016	Sep. 13, 2016	Dec. 31, 2015
Document and Entity Information:
Entity Registrant Name	Southern Missouri Bancorp Inc
Document Type	10-K
Document Period End Date	Jun. 30, 2016
Trading Symbol	smbc
Amendment Flag	false
Entity Central Index Key	0000916907
Current Fiscal Year End Date	--06-30
Entity Common Stock, Shares Outstanding		7,436,866
Entity Public Float			$ 144,100,000
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY