Note 4 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Jun. 30, 2020
Beginning balance	$ 5,678	$ 3,788
Provision for loan losses	130	130
Loans charged-off	(66)	(16)
Recoveries	25	7
Total ending allowance balance	5,767	3,909
Individually evaluated for impairment			$ 8	$ 34
Total ending allowance balance	5,678	3,909	5,767	5,678
Loans individually evaluated for impairment			2,099	1,923
Total ending loans balance			563,897	544,797
Financial Asset Acquired [Member]
Collectively evaluated for impairment			192	197
Loans collectively evaluated for impairment			45,424	48,969
Financial Asset Originated [Member]
Collectively evaluated for impairment			5,567	5,447
Loans collectively evaluated for impairment			516,374	493,905
Commercial Portfolio Segment [Member]
Beginning balance	947	660
Provision for loan losses	15	(11)
Loans charged-off	(22)
Recoveries
Total ending allowance balance	940	649
Individually evaluated for impairment			3	28
Total ending allowance balance	940	649	940	947
Loans individually evaluated for impairment			154	179
Total ending loans balance			176,319	157,328
Commercial Portfolio Segment [Member] \| Financial Asset Acquired [Member]
Collectively evaluated for impairment
Loans collectively evaluated for impairment			882	1,095
Commercial Portfolio Segment [Member] \| Financial Asset Originated [Member]
Collectively evaluated for impairment			937	919
Loans collectively evaluated for impairment			175,283	156,054
Commercial Real Estate Portfolio Segment [Member]
Beginning balance	3,623	2,575
Provision for loan losses	70	69
Loans charged-off
Recoveries	1	1
Total ending allowance balance	3,694	2,645
Individually evaluated for impairment			5	6
Total ending allowance balance	3,694	2,645	3,694	3,623
Loans individually evaluated for impairment			1,031	1,045
Total ending loans balance			248,795	245,957
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset Acquired [Member]
Collectively evaluated for impairment			103	103
Loans collectively evaluated for impairment			8,097	8,072
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset Originated [Member]
Collectively evaluated for impairment			3,586	3,514
Loans collectively evaluated for impairment			239,667	236,840
Residential Portfolio Segment [Member]
Beginning balance	989	494
Provision for loan losses	8	56
Loans charged-off
Recoveries
Total ending allowance balance	997	550
Individually evaluated for impairment
Total ending allowance balance	997	550	997	989
Loans individually evaluated for impairment			914	699
Total ending loans balance			116,980	120,119
Residential Portfolio Segment [Member] \| Financial Asset Acquired [Member]
Collectively evaluated for impairment			89	94
Loans collectively evaluated for impairment			25,553	27,252
Residential Portfolio Segment [Member] \| Financial Asset Originated [Member]
Collectively evaluated for impairment			908	895
Loans collectively evaluated for impairment			90,513	92,168
Consumer Portfolio Segment [Member]
Beginning balance	119	59
Provision for loan losses	37	16
Loans charged-off	(44)	(16)
Recoveries	24	6
Total ending allowance balance	136	65
Individually evaluated for impairment
Total ending allowance balance	$ 136	$ 65	136	119
Loans individually evaluated for impairment
Total ending loans balance			21,803	21,393
Consumer Portfolio Segment [Member] \| Financial Asset Acquired [Member]
Collectively evaluated for impairment
Loans collectively evaluated for impairment			10,892	12,550
Consumer Portfolio Segment [Member] \| Financial Asset Originated [Member]
Collectively evaluated for impairment			136	119
Loans collectively evaluated for impairment			$ 10,911	$ 8,843

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

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Amount of financing receivable not past due.

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

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