Note 4: Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	9 Months Ended
Mar. 31, 2018	Jun. 30, 2017
Financing Receivable, Credit Quality, Additional Information	lending relationships of $1 million or more, exclusive of any consumer or owner-occupied residential loan, are subject to an annual credit analysis which is prepared by the loan administration department and presented to a loan committee with appropriate lending authority. A sample of lending relationships in excess of $2.5 million are subject to an independent loan review annually, in order to verify risk ratings
Loans without a specific valuation allowance
Purchased Credit Impaired Loans	$ 14,600	$ 20,100

Includes any additional disclosures related to the credit quality of financing receivables. This may include a description of a credit quality indicator or a description of how the internal risk ratings used by a company relate to the likelihood of loss.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 29
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953659-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953664-111524

Name:	us-gaap_FinancingReceivableCreditQualityAdditionalInformation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration