Loans - Allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022
Allowance for credit losses:
Beginning balance	$ 3,409	$ 3,613
Charge-offs	(79)
Recoveries	3	8
Provision (recovery) for loan losses		(30)
Ending Balance	3,333	3,591
Allowance ending balance:
Collectively evaluated for impairment	3,333		$ 3,409
Allowance for loan losses	3,333	3,591	3,409
Loans receivable ,Individually evaluated for impairment	3,812		5,288
Loans receivable, Collectively evaluated for impairment	359,851		356,270
Total Loans	476,516		479,669
Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	156		156
Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	112,697		117,955
Residential real estate \| 1-4 Family
Allowance for credit losses:
Beginning balance	506	709
Charge-offs	(79)
Provision (recovery) for loan losses	66	(51)
Ending Balance	493	658
Allowance ending balance:
Collectively evaluated for impairment	493		506
Allowance for loan losses	493	658	506
Loans receivable ,Individually evaluated for impairment	1,605		3,336
Loans receivable, Collectively evaluated for impairment	80,250		78,478
Total Loans	144,290		147,061
Residential real estate \| 1-4 Family \| Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	133		133
Residential real estate \| 1-4 Family \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	62,302		65,114
Residential real estate \| Home equity and HELOCs
Allowance for credit losses:
Beginning balance	113	133
Recoveries		7
Provision (recovery) for loan losses	3	(17)
Ending Balance	116	123
Allowance ending balance:
Collectively evaluated for impairment	116		113
Allowance for loan losses	116	123	113
Loans receivable ,Individually evaluated for impairment	343		275
Loans receivable, Collectively evaluated for impairment	15,810		15,679
Total Loans	32,235		32,529
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	16,059		16,552
Residential real estate \| Construction Residential
Allowance for credit losses:
Beginning balance	386	487
Provision (recovery) for loan losses	(85)	(101)
Ending Balance	301	386
Allowance ending balance:
Collectively evaluated for impairment	301		386
Allowance for loan losses	301	386	386
Loans receivable, Collectively evaluated for impairment	11,630		14,834
Total Loans	11,630		14,834
Commercial real estate \| 1 - 4 family investor
Allowance for credit losses:
Beginning balance	527	843
Provision (recovery) for loan losses	(32)	33
Ending Balance	495	876
Allowance ending balance:
Collectively evaluated for impairment	495		527
Allowance for loan losses	495	876	527
Loans receivable ,Individually evaluated for impairment	99		173
Loans receivable, Collectively evaluated for impairment	80,666		81,834
Total Loans	94,794		96,850
Commercial real estate \| 1 - 4 family investor \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	14,029		14,843
Commercial real estate \| Multi-family (five or more)
Allowance for credit losses:
Beginning balance	110	159
Provision (recovery) for loan losses	2	(11)
Ending Balance	112	148
Allowance ending balance:
Collectively evaluated for impairment	112		110
Allowance for loan losses	112	148	110
Loans receivable ,Individually evaluated for impairment	291		291
Loans receivable, Collectively evaluated for impairment	14,378		12,525
Total Loans	14,922		13,069
Commercial real estate \| Multi-family (five or more) \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	253		253
Commercial real estate \| Commercial non-residential
Allowance for credit losses:
Beginning balance	1,451	854
Provision (recovery) for loan losses	(20)	114
Ending Balance	1,431	968
Allowance ending balance:
Collectively evaluated for impairment	1,431		1,451
Allowance for loan losses	1,431	968	1,451
Loans receivable ,Individually evaluated for impairment	1,474		1,213
Loans receivable, Collectively evaluated for impairment	138,332		138,812
Total Loans	157,606		158,727
Commercial real estate \| Commercial non-residential \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	17,800		18,702
Commercial real estate \| Construction and Land
Allowance for credit losses:
Beginning balance	166	362
Provision (recovery) for loan losses	58	6
Ending Balance	224	368
Allowance ending balance:
Collectively evaluated for impairment	224		166
Allowance for loan losses	224	368	166
Loans receivable, Collectively evaluated for impairment	7,953		4,951
Total Loans	7,953		4,951
Commercial
Allowance for credit losses:
Beginning balance	100	51
Provision (recovery) for loan losses	11	(2)
Ending Balance	111	49
Allowance ending balance:
Collectively evaluated for impairment	111		100
Allowance for loan losses	111	49	100
Loans receivable, Collectively evaluated for impairment	10,311		8,626
Total Loans	10,932		9,409
Commercial \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	621		783
Consumer
Allowance for credit losses:
Beginning balance	50	15
Recoveries	3	1
Provision (recovery) for loan losses	(3)	(1)
Ending Balance	50	15
Allowance ending balance:
Collectively evaluated for impairment	50		50
Allowance for loan losses	50	$ 15	50
Loans receivable, Collectively evaluated for impairment	521		531
Total Loans	2,154		2,239
Consumer \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	$ 1,633		$ 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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The balance of financing receivables that were individually 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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