Loans - Allowance for loan losses (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Allowance for credit losses:
Beginning balance	$ 3,519	$ 3,209
Charge-offs	(77)	(316)
Recoveries	38
Provision for loan losses	133	626
Ending Balance	3,613	3,519
Allowance ending balance:
Collectively evaluated for impairment	3,613	3,519
Allowance for loan losses	3,613	3,519
Loans receivable ,Individually evaluated for impairment	3,986	2,371
Loans receivable, Collectively evaluated for impairment	302,826	279,984
Total Loans	468,072	517,467
Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	161	321
Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	161,099	234,791
Residential real estate \| 1-4 Family
Allowance for credit losses:
Beginning balance	682	691
Charge-offs	(17)
Provision for loan losses	44	(9)
Ending Balance	709	682
Allowance ending balance:
Collectively evaluated for impairment	709	682
Allowance for loan losses	709	682
Loans receivable ,Individually evaluated for impairment	1,907	478
Loans receivable, Collectively evaluated for impairment	87,633	97,541
Total Loans	173,399	230,955
Residential real estate \| 1-4 Family \| Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	138	299
Residential real estate \| 1-4 Family \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	83,721	132,637
Residential real estate \| Home equity and HELOCs
Allowance for credit losses:
Beginning balance	166	122
Charge-offs	(30)	(6)
Provision for loan losses	(3)	50
Ending Balance	133	166
Allowance ending balance:
Collectively evaluated for impairment	133	166
Allowance for loan losses	133	166
Loans receivable ,Individually evaluated for impairment	578	628
Loans receivable, Collectively evaluated for impairment	14,617	15,170
Total Loans	37,222	46,519
Residential real estate \| Home equity and HELOCs \| Acquired credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	23	22
Residential real estate \| Home equity and HELOCs \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	22,004	30,699
Residential real estate \| Construction Residential
Allowance for credit losses:
Beginning balance	526	321
Provision for loan losses	(39)	205
Ending Balance	487	526
Allowance ending balance:
Collectively evaluated for impairment	487	526
Allowance for loan losses	487	526
Loans receivable, Collectively evaluated for impairment	10,686	9,218
Total Loans	12,945	15,799
Residential real estate \| Construction Residential \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	2,259	6,581
Commercial real estate \| 1 - 4 family investor
Allowance for credit losses:
Beginning balance	801	810
Charge-offs		(260)
Recoveries	3
Provision for loan losses	39	251
Ending Balance	843	801
Allowance ending balance:
Collectively evaluated for impairment	843	801
Allowance for loan losses	843	801
Loans receivable ,Individually evaluated for impairment	433	495
Loans receivable, Collectively evaluated for impairment	98,189	92,021
Total Loans	120,727	115,495
Commercial real estate \| 1 - 4 family investor \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	22,105	22,979
Commercial real estate \| Multi-family (five or more)
Allowance for credit losses:
Beginning balance	123	71
Provision for loan losses	36	52
Ending Balance	159	123
Allowance ending balance:
Collectively evaluated for impairment	159	123
Allowance for loan losses	159	123
Loans receivable ,Individually evaluated for impairment	176	185
Loans receivable, Collectively evaluated for impairment	12,008	9,267
Total Loans	12,315	14,964
Commercial real estate \| Multi-family (five or more) \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	131	5,512
Commercial real estate \| Commercial non-residential
Allowance for credit losses:
Beginning balance	727	708
Charge-offs		(35)
Recoveries	35
Provision for loan losses	92	54
Ending Balance	854	727
Allowance ending balance:
Collectively evaluated for impairment	854	727
Allowance for loan losses	854	727
Loans receivable ,Individually evaluated for impairment	892	585
Loans receivable, Collectively evaluated for impairment	68,630	45,214
Total Loans	96,712	76,707
Commercial real estate \| Commercial non-residential \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	27,190	30,908
Commercial real estate \| Construction and Land
Allowance for credit losses:
Beginning balance	396	121
Provision for loan losses	(34)	275
Ending Balance	362	396
Allowance ending balance:
Collectively evaluated for impairment	362	396
Allowance for loan losses	362	396
Loans receivable, Collectively evaluated for impairment	6,377	6,690
Total Loans	6,377	6,690
Commercial
Allowance for credit losses:
Beginning balance	83	95
Charge-offs		(3)
Provision for loan losses	(32)	(9)
Ending Balance	51	83
Allowance ending balance:
Collectively evaluated for impairment	51	83
Allowance for loan losses	51	83
Loans receivable, Collectively evaluated for impairment	4,151	4,150
Total Loans	5,145	6,438
Commercial \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	994	2,288
Consumer
Allowance for credit losses:
Beginning balance	15	3
Charge-offs	(30)	(12)
Provision for loan losses	30	24
Ending Balance	15	15
Allowance ending balance:
Collectively evaluated for impairment	15	15
Allowance for loan losses	15	15
Loans receivable, Collectively evaluated for impairment	535	713
Total Loans	3,230	3,900
Consumer \| Acquired non-credit impaired
Allowance ending balance:
Loans receivable, Collectively evaluated for impairment	$ 2,695	3,187
Unallocated
Allowance for credit losses:
Beginning balance		267
Provision for loan losses		$ (267)
Ending Balance
Allowance ending balance:
Allowance for loan losses

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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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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