Note 13: Business Combinations (Details) - USD ($)	3 Months Ended	9 Months Ended
Mar. 31, 2020	Mar. 31, 2020
Details
Business Combination, Acquired Receivables, Description	At April 30, 2020 Central held consolidated assets of $70 million, loans, net of allowance, of $52 million, and deposits of $47 million. The transaction is expected to close late in the month of May, 2020, subject to satisfaction of customary closing conditions, including regulatory and Central shareholder approvals.
Payments for Merger Related Costs	$ 76	$ 101

This element represents a narrative description of the nature of receivables acquired in a business combination (as defined) including the nature of the receivables (such as loans, capital leases), the fair value of the acquired receivables, the gross contractual amount to be collected, and the amount estimated to be doubtful of collection, if any.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472

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