Loans and Allowance for Loan Losses, Activity and Allocation of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
Allowance for Loan Losses [Abstract]
Increase in provision for credit losses to reserve for losses resulting from COVID-19 pandemic	$ 1,200	$ 551
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	16,391	13,200
Charge-offs	61	361
Recoveries	23	54
Provision	1,243	551
Balance, end of period	17,596	13,444
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	214		$ 228
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	17,382		16,163
Loans receivable, ending balance, impairment analysis individually evaluated	3,168		3,270
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 1,045,945		1,009,390
Smaller Commercial 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	$ 2,091	2,026
Charge-offs	0	53
Recoveries	3	0
Provision	(631)	(461)
Balance, end of period	1,463	1,512
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	126		127
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,337		1,964
Loans receivable, ending balance, impairment analysis individually evaluated	1,781		1,863
Loans receivable, ending balance, impairment analysis collectively evaluated	287,721		277,469
Residential Real Estate [Member] \| Construction and Land [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	141	87
Charge-offs	0	0
Recoveries	0	0
Provision	(23)	12
Balance, end of period	118	99
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	118		141
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	9,777		11,847
Residential Real Estate [Member] \| Multi-family [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	176	180
Charge-offs	0	0
Recoveries	0	0
Provision	4	25
Balance, end of period	180	205
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	180		176
Loans receivable, ending balance, impairment analysis individually evaluated	120		123
Loans receivable, ending balance, impairment analysis collectively evaluated	26,121		24,981
Commercial Real Estate [Member] \| Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	8,634	7,110
Charge-offs	0	0
Recoveries	0	0
Provision	750	49
Balance, end of period	9,384	7,159
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	9,384		8,634
Loans receivable, ending balance, impairment analysis individually evaluated	332		344
Loans receivable, ending balance, impairment analysis collectively evaluated	415,322		381,071
Commercial Real Estate [Member] \| Construction [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	2,053	872
Charge-offs	0	0
Recoveries	0	0
Provision	(92)	419
Balance, end of period	1,961	1,291
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	15		15
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,946		2,038
Loans receivable, ending balance, impairment analysis individually evaluated	102		102
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 71,104		74,818
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	$ 295	314
Charge-offs	0	0
Recoveries	0	0
Provision	(23)	(7)
Balance, end of period	272	307
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	73		73
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	199		222
Loans receivable, ending balance, impairment analysis individually evaluated	558		559
Loans receivable, ending balance, impairment analysis collectively evaluated	20,143		21,547
Consumer Loan [Member] \| Consumer Installment [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	197	250
Charge-offs	61	109
Recoveries	20	24
Provision	194	154
Balance, end of period	350	319
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	350		197
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 5,180		4,817
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	$ 2,804	2,361
Charge-offs	0	199
Recoveries	0	30
Provision	1,064	360
Balance, end of period	3,868	$ 2,552
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0		13
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	3,868		2,791
Loans receivable, ending balance, impairment analysis individually evaluated	275		279
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 210,577		$ 212,840

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.

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

+ References

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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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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.

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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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