Loans, Activity and Allocation of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Allowance for Loan Losses [Abstract]
Increase in provision for credit losses to reserve for losses resulting from COVID-19 pandemic	$ 1,300
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	13,200	$ 12,024
Charge-offs	896	786
Recoveries	182	303
Provision	3,905	1,659
Balance, end of period	16,391	13,200
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	228	262
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	16,163	12,938
Loans receivable, ending balance, impairment analysis individually evaluated	3,270	3,894
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 1,009,390	794,211
Smaller Business Loans [Member] \| Unsecured [Member]
Allowance for Loan Losses [Abstract]
Threshold period to charge off loans against allowance for loan losses	90 days
Residential Real Estate [Member] \| Residential Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 2,026	2,116
Charge-offs	102	287
Recoveries	16	13
Provision	151	184
Balance, end of period	2,091	2,026
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	127	188
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,964	1,838
Loans receivable, ending balance, impairment analysis individually evaluated	1,863	2,147
Loans receivable, ending balance, impairment analysis collectively evaluated	277,469	265,655
Residential Real Estate [Member] \| Construction and Land [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	87	114
Charge-offs	0	0
Recoveries	0	0
Provision	54	(27)
Balance, end of period	141	87
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0	0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	141	87
Loans receivable, ending balance, impairment analysis individually evaluated	0	0
Loans receivable, ending balance, impairment analysis collectively evaluated	11,847	7,462
Residential Real Estate [Member] \| Multi-family [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	180	162
Charge-offs	0	0
Recoveries	0	0
Provision	(4)	18
Balance, end of period	176	180
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0	0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	176	180
Loans receivable, ending balance, impairment analysis individually evaluated	123	0
Loans receivable, ending balance, impairment analysis collectively evaluated	24,981	24,592
Commercial Real Estate [Member] \| Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	7,110	5,979
Charge-offs	0	74
Recoveries	0	0
Provision	1,524	1,205
Balance, end of period	8,634	7,110
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0	0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	8,634	7,110
Loans receivable, ending balance, impairment analysis individually evaluated	344	717
Loans receivable, ending balance, impairment analysis collectively evaluated	381,071	328,951
Commercial Real Estate [Member] \| Construction [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	872	950
Charge-offs	0	0
Recoveries	0	0
Provision	1,181	(78)
Balance, end of period	2,053	872
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	15	2
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	2,038	870
Loans receivable, ending balance, impairment analysis individually evaluated	102	102
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 74,818	36,259
Consumer Loan [Member] \| Unsecured [Member]
Allowance for Loan Losses [Abstract]
Threshold period to charge off loans against allowance for loan losses	90 days
Consumer Loan [Member] \| Home Equity [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 314	317
Charge-offs	0	0
Recoveries	0	0
Provision	(19)	(3)
Balance, end of period	295	314
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	73	59
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	222	255
Loans receivable, ending balance, impairment analysis individually evaluated	559	657
Loans receivable, ending balance, impairment analysis collectively evaluated	21,547	22,528
Consumer Loan [Member] \| Consumer Installment [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	250	224
Charge-offs	459	374
Recoveries	130	137
Provision	276	263
Balance, end of period	197	250
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0	0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	197	250
Loans receivable, ending balance, impairment analysis individually evaluated	0	0
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 4,817	5,481
Consumer Loan [Member] \| Consumer Installment [Member] \| Unsecured [Member]
Allowance for Loan Losses [Abstract]
Threshold period to charge off overdrawn deposit accounts against allowance for loan losses	60 days
Commercial Loans [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 2,361	2,128
Charge-offs	335	51
Recoveries	36	153
Provision	742	131
Balance, end of period	2,804	2,361
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	13	13
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	2,791	2,348
Loans receivable, ending balance, impairment analysis individually evaluated	279	271
Loans receivable, ending balance, impairment analysis collectively evaluated	212,840	103,283
Unallocated [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 0	34
Charge-offs		0
Recoveries		0
Provision		(34)
Balance, end of period		$ 0

Amount of increase in provision for credit losses to reserve for losses resulting from COVID-19 pandemic.

No definition available.

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- Definition

Threshold period for overdrawn financing receivable to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

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- Definition

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

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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

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

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Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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