Loans - Allowance for loan losses (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Allowance for credit losses:
Beginning balance	$ 3,409	$ 3,613
Charge-offs	(111)	(238)
Recoveries	15	54
Provision		(20)
Ending Balance	3,313	3,409
Allowance ending balance:
Collectively evaluated for impairment	3,313	3,409
Allowance for loan losses	3,313	3,409
Loans receivable ,Individually evaluated for impairment	3,252	5,288
Loans receivable, Collectively evaluated for impairment	380,012	356,151
Total Loans	480,856	478,920
Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	72	156
Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	97,520	117,325
Residential real estate \| 1-4 Family
Allowance for credit losses:
Beginning balance	506	709
Charge-offs	(79)	(154)
Provision	59	(49)
Ending Balance	486	506
Allowance ending balance:
Collectively evaluated for impairment	486	506
Allowance for loan losses	486	506
Loans receivable ,Individually evaluated for impairment	1,209	3,336
Loans receivable, Collectively evaluated for impairment	78,237	78,478
Total Loans	135,046	147,143
Residential real estate \| 1-4 Family \| Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	72	133
Residential real estate \| 1-4 Family \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	55,528	65,196
Residential real estate \| Home equity and HELOCs
Allowance for credit losses:
Beginning balance	113	133
Recoveries		8
Provision		(28)
Ending Balance	113	113
Allowance ending balance:
Collectively evaluated for impairment	113	113
Allowance for loan losses	113	113
Loans receivable ,Individually evaluated for impairment	182	275
Loans receivable, Collectively evaluated for impairment	19,689	15,679
Total Loans	32,684	32,590
Residential real estate \| Home equity and HELOCs \| Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment		23
Residential real estate \| Home equity and HELOCs \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	12,813	16,613
Residential real estate \| Construction Residential
Allowance for credit losses:
Beginning balance	386	487
Provision	(172)	(101)
Ending Balance	214	386
Allowance ending balance:
Collectively evaluated for impairment	214	386
Allowance for loan losses	214	386
Loans receivable, Collectively evaluated for impairment	9,113	14,778
Total Loans	9,113	14,778
Commercial real estate \| 1 - 4 family investor
Allowance for credit losses:
Beginning balance	527	843
Charge-offs		(55)
Recoveries		42
Provision	42	(303)
Ending Balance	569	527
Allowance ending balance:
Collectively evaluated for impairment	569	527
Allowance for loan losses	569	527
Loans receivable ,Individually evaluated for impairment	832	173
Loans receivable, Collectively evaluated for impairment	84,891	81,834
Total Loans	98,160	96,508
Commercial real estate \| 1 - 4 family investor \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	12,437	14,501
Commercial real estate \| Multi-family (five or more)
Allowance for credit losses:
Beginning balance	110	159
Provision	(21)	(49)
Ending Balance	89	110
Allowance ending balance:
Collectively evaluated for impairment	89	110
Allowance for loan losses	89	110
Loans receivable ,Individually evaluated for impairment	251	291
Loans receivable, Collectively evaluated for impairment	14,781	12,471
Total Loans	15,281	13,015
Commercial real estate \| Multi-family (five or more) \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	249	253
Commercial real estate \| Commercial non-residential
Allowance for credit losses:
Beginning balance	1,451	854
Provision	(31)	597
Ending Balance	1,420	1,451
Allowance ending balance:
Collectively evaluated for impairment	1,420	1,451
Allowance for loan losses	1,420	1,451
Loans receivable ,Individually evaluated for impairment	778	1,213
Loans receivable, Collectively evaluated for impairment	142,098	138,812
Total Loans	157,555	158,294
Commercial real estate \| Commercial non-residential \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	14,679	18,269
Commercial real estate \| Construction and Land
Allowance for credit losses:
Beginning balance	166	362
Provision	115	(196)
Ending Balance	281	166
Allowance ending balance:
Collectively evaluated for impairment	281	166
Allowance for loan losses	281	166
Loans receivable, Collectively evaluated for impairment	15,584	4,942
Total Loans	15,584	4,942
Commercial
Allowance for credit losses:
Beginning balance	100	51
Provision	(18)	49
Ending Balance	82	100
Allowance ending balance:
Collectively evaluated for impairment	82	100
Allowance for loan losses	82	100
Loans receivable, Collectively evaluated for impairment	14,976	8,626
Total Loans	15,433	9,411
Commercial \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	457	785
Consumer
Allowance for credit losses:
Beginning balance	50	15
Charge-offs	(32)	(29)
Recoveries	15	4
Provision	26	60
Ending Balance	59	50
Allowance ending balance:
Collectively evaluated for impairment	59	50
Allowance for loan losses	59	50
Loans receivable, Collectively evaluated for impairment	643	531
Total Loans	2,000	2,239
Consumer \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	$ 1,357	$ 1,708

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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

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

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

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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, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

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