Note 2: Available-for-sale Securities: Marketable Securities Available for Sale Securities Policy: Gain on Sales of Available for Sale Securities (Details) - USD ($)	12 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Details
Gain Recognized on Sales of Available for Sale Securities	$ 6,228	$ 116,164	$ 0

Represents the monetary amount of Gain Recognized on Sales of Available for Sale Securities, during the indicated time period.

No definition available.

Name:	smbc_GainRecognizedOnSalesOfAvailableForSaleSecurities
Namespace Prefix:	smbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration