Note 5: Other Real Estate Owned: Foreclosures in Process (Details) - Foreclosures in Process $ in Thousands	Dec. 31, 2017 USD ($)
Mortgage Loans on Real Estate	$ 3,200
Acquired Loans
Mortgage Loans on Real Estate	3,000
Acquired Loans \| Covered by Loss Sharing Agreements
Mortgage Loans on Real Estate	2,800
Acquired Loans \| Acquired in Valley Bank Transaction
Mortgage Loans on Real Estate	$ 208

Total carrying amount of mortgage loans as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant