Note 18: Derivatives and Hedging Activities: Nondesignated Hedges (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ 66	$ (43)
Interest Rate Swap \| Not Designated as Hedging Instrument \| Commercial Customers
Derivative, Notional Amount	$ 110,700	$ 123,000

Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration