Loans and Allowance for Credit Losses - Interest income recognized on impaired loans (Details) - USD ($)	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Average Investment in Impaired Loans	$ 24,507,000	$ 22,137,000
Interest Income Recognized	1,918,000	2,854,000
Interest Income Recognized, Cash basis	0	0
Change in the present value of future cash flows attributable to the passage of time	236,000	1,300,000
Commercial loans
Average Investment in Impaired Loans	5,597,000	4,212,000
Interest Income Recognized	419,000	926,000
Construction Real Estate
Average Investment in Impaired Loans	1,295,000	1,297,000
Interest Income Recognized	134,000	246,000
Residential Real Estate
Average Investment in Impaired Loans	1,440,000	2,081,000
Interest Income Recognized	89,000	112,000
Commercial
Average Investment in Impaired Loans	16,175,000	14,547,000
Interest Income Recognized	$ 1,276,000	$ 1,570,000

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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- Definition

The amount of interest income on impaired and nonperforming loans that is due to the change in present value attributable to the passage of time.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5278-111524

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