Loans - Allowance for loan losses (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Allowance for credit losses:
Beginning balance	$ 3,613	$ 3,519
Charge-offs	(238)	(77)
Recoveries	54	38
(Recovery) provision for loan losses	(20)	133
Ending Balance	3,409	3,613
Allowance ending balance:
Collectively evaluated for impairment	3,409	3,613
Allowance for loan losses	3,409	3,613
Loans receivable ,Individually evaluated for impairment	5,288	3,986
Loans receivable, Collectively evaluated for impairment	356,270	300,383
Total Loans	479,669	465,629
Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	156	161
Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	117,955	161,099
Residential real estate \| 1-4 Family
Allowance for credit losses:
Beginning balance	709	682
Charge-offs	(154)	(17)
(Recovery) provision for loan losses	(49)	44
Ending Balance	506	709
Allowance ending balance:
Collectively evaluated for impairment	506	709
Allowance for loan losses	506	709
Loans receivable ,Individually evaluated for impairment	3,336	1,907
Loans receivable, Collectively evaluated for impairment	78,478	87,540
Total Loans	147,061	173,306
Residential real estate \| 1-4 Family \| Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	133	138
Residential real estate \| 1-4 Family \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	65,114	83,721
Residential real estate \| Home equity and HELOCs
Allowance for credit losses:
Beginning balance	133	166
Charge-offs		(30)
Recoveries	8
(Recovery) provision for loan losses	(28)	(3)
Ending Balance	113	133
Allowance ending balance:
Collectively evaluated for impairment	113	133
Allowance for loan losses	113	133
Loans receivable ,Individually evaluated for impairment	275	578
Loans receivable, Collectively evaluated for impairment	15,679	14,617
Total Loans	32,529	37,222
Residential real estate \| Home equity and HELOCs \| Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	23	23
Residential real estate \| Home equity and HELOCs \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	16,552	22,004
Residential real estate \| Construction Residential
Allowance for credit losses:
Beginning balance	487	526
(Recovery) provision for loan losses	(101)	(39)
Ending Balance	386	487
Allowance ending balance:
Collectively evaluated for impairment	386	487
Allowance for loan losses	386	487
Loans receivable, Collectively evaluated for impairment	14,834	8,582
Total Loans	14,834	10,841
Residential real estate \| Construction Residential \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment		2,259
Commercial real estate \| 1 - 4 family investor
Allowance for credit losses:
Beginning balance	843	801
Charge-offs	(55)
Recoveries	42	3
(Recovery) provision for loan losses	(303)	39
Ending Balance	527	843
Allowance ending balance:
Collectively evaluated for impairment	527	843
Allowance for loan losses	527	843
Loans receivable ,Individually evaluated for impairment	173	433
Loans receivable, Collectively evaluated for impairment	81,834	98,043
Total Loans	96,850	120,581
Commercial real estate \| 1 - 4 family investor \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	14,843	22,105
Commercial real estate \| Multi-family (five or more)
Allowance for credit losses:
Beginning balance	159	123
(Recovery) provision for loan losses	(49)	36
Ending Balance	110	159
Allowance ending balance:
Collectively evaluated for impairment	110	159
Allowance for loan losses	110	159
Loans receivable ,Individually evaluated for impairment	291	176
Loans receivable, Collectively evaluated for impairment	12,525	12,008
Total Loans	13,069	12,315
Commercial real estate \| Multi-family (five or more) \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	253	131
Commercial real estate \| Commercial non-residential
Allowance for credit losses:
Beginning balance	854	727
Recoveries		35
(Recovery) provision for loan losses	597	92
Ending Balance	1,451	854
Allowance ending balance:
Collectively evaluated for impairment	1,451	854
Allowance for loan losses	1,451	854
Loans receivable ,Individually evaluated for impairment	1,213	892
Loans receivable, Collectively evaluated for impairment	138,812	68,530
Total Loans	158,727	96,612
Commercial real estate \| Commercial non-residential \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	18,702	27,190
Commercial real estate \| Construction and Land
Allowance for credit losses:
Beginning balance	362	396
(Recovery) provision for loan losses	(196)	(34)
Ending Balance	166	362
Allowance ending balance:
Collectively evaluated for impairment	166	362
Allowance for loan losses	166	362
Loans receivable, Collectively evaluated for impairment	4,951	6,377
Total Loans	4,951	6,377
Commercial
Allowance for credit losses:
Beginning balance	51	83
(Recovery) provision for loan losses	49	(32)
Ending Balance	100	51
Allowance ending balance:
Collectively evaluated for impairment	100	51
Allowance for loan losses	100	51
Loans receivable, Collectively evaluated for impairment	8,626	4,151
Total Loans	9,409	5,145
Commercial \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	783	994
Consumer
Allowance for credit losses:
Beginning balance	15	15
Charge-offs	(29)	(30)
Recoveries	4
(Recovery) provision for loan losses	60	30
Ending Balance	50	15
Allowance ending balance:
Collectively evaluated for impairment	50	15
Allowance for loan losses	50	15
Loans receivable, Collectively evaluated for impairment	531	535
Total Loans	2,239	3,230
Consumer \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	$ 1,708	$ 2,695

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

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