Loans and Allowance for Loan Losses - Schedule of Balance in the Allowance for Loan Losses and Recorded Invesetment (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Loans Receivable
Provision charged to expense	$ 6,002	$ 2,032	$ 3,047
Losses charged off	(853)	(389)	(406)
Recoveries	87	46	35
Consumer loans
Provision charged to expense	300	231	251
Losses charged off	(189)	(103)	(129)
Recoveries	25	16	23
Commercial loans
Provision charged to expense	798	281	691
Losses charged off	(273)	(92)	(22)
Recoveries	28	2	8
Construction Real Estate
Provision charged to expense	645	268	142
Losses charged off			(9)
Residential Real Estate
Provision charged to expense	1,529	487	184
Losses charged off	(379)	(30)	(190)
Recoveries	19	23	2
Commercial
Provision charged to expense	2,730	765	1,779
Losses charged off	(12)	(164)	(56)
Recoveries	15	5	2
Beginning of Period \| Loans Receivable
Allowance for Loan Losses		19,903	18,214	$ 15,538
Beginning of Period \| Consumer loans
Allowance for Loan Losses		1,046	902	757
Beginning of Period \| Commercial loans
Allowance for Loan Losses		4,387	4,196	3,519
Beginning of Period \| Construction Real Estate
Allowance for Loan Losses		1,365	1,097	964
Beginning of Period \| Residential Real Estate
Allowance for Loan Losses		3,706	3,226	3,230
Beginning of Period \| Commercial
Allowance for Loan Losses		9,399	8,793	$ 7,068
End of Period \| Loans Receivable
Allowance for Loan Losses	25,139	19,903	18,214
Ending Balance: collectively evaluated for impairment	25,139	19,903
Ending Balance: collectively evaluated for impairment	2,149,664	1,837,763
Ending Balance: loans acquired with deteriorated credit quality	21,799	28,548
End of Period \| Consumer loans
Allowance for Loan Losses	1,182	1,046	902
Ending Balance: collectively evaluated for impairment	1,182	1,046
Ending Balance: collectively evaluated for impairment	80,767	97,534
End of Period \| Commercial loans
Allowance for Loan Losses	4,940	4,387	4,196
Ending Balance: collectively evaluated for impairment	4,940	4,387
Ending Balance: collectively evaluated for impairment	463,902	349,681
Ending Balance: loans acquired with deteriorated credit quality	4,546	6,193
End of Period \| Construction Real Estate
Allowance for Loan Losses	2,010	1,365	1,097
Ending Balance: collectively evaluated for impairment	2,010	1,365
Ending Balance: collectively evaluated for impairment	106,194	78,826
Ending Balance: loans acquired with deteriorated credit quality	1,278	1,308
End of Period \| Residential Real Estate
Allowance for Loan Losses	4,875	3,706	3,226
Ending Balance: collectively evaluated for impairment	4,875	3,706
Ending Balance: collectively evaluated for impairment	626,085	490,307
Ending Balance: loans acquired with deteriorated credit quality	1,272	1,685
End of Period \| Commercial
Allowance for Loan Losses	12,132	9,399	$ 8,793
Ending Balance: collectively evaluated for impairment	12,132	9,399
Ending Balance: collectively evaluated for impairment	872,716	821,415
Ending Balance: loans acquired with deteriorated credit quality	$ 14,703	$ 19,362

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- Definition

Represents the monetary amount of Financing Receivables Acquired with Deteriorated Credit Quality, during the indicated time period.

+ References

No definition available.

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- Definition

Amount of increase in allowance for credit loss on accounts receivable, from recovery.

+ References

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524

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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(11))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

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