Note 4 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Jun. 30, 2019
Beginning balance	$ 3,909	$ 3,538	$ 3,788	$ 3,422
Provision for loan losses	185	(775)	315	(660)
Loans charged-off	(7)	(69)	(23)	(76)
Recoveries	8	875	15	883
Total ending allowance balance	4,095	3,569	4,095	3,569
Individually evaluated for impairment					$ 9	$ 9
Collectively evaluated for impairment					4,086	3,779
Total ending allowance balance	3,909	3,569	3,788	3,422	4,095	3,788
Loans individually evaluated for impairment					1,059	1,189
Loans collectively evaluated for impairment					396,196	368,877
Total ending loans balance					397,255	370,066
Commercial Portfolio Segment [Member]
Beginning balance	649	602	660	586
Provision for loan losses	117	20	106	36
Loans charged-off
Recoveries
Total ending allowance balance	766	622	766	622
Individually evaluated for impairment					2	2
Collectively evaluated for impairment					764	658
Total ending allowance balance	766	622	660	586	766	660
Loans individually evaluated for impairment					163	174
Loans collectively evaluated for impairment					76,253	80,413
Total ending loans balance					76,416	80,587
Commercial Real Estate Portfolio Segment [Member]
Beginning balance	2,645	2,378	2,575	2,277
Provision for loan losses	6	(793)	75	(693)
Loans charged-off		(55)		(55)
Recoveries	1	867	2	868
Total ending allowance balance	2,652	2,397	2,652	2,397
Individually evaluated for impairment					7	7
Collectively evaluated for impairment					2,645	2,568
Total ending allowance balance	2,652	2,397	2,575	2,277	2,652	2,575
Loans individually evaluated for impairment					638	658
Loans collectively evaluated for impairment					231,791	210,709
Total ending loans balance					232,429	211,367
Residential Portfolio Segment [Member]
Beginning balance	550	507	494	499
Provision for loan losses	64	(12)	120	(7)
Loans charged-off
Recoveries	1	1	1	4
Total ending allowance balance	615	496	615	496
Individually evaluated for impairment
Collectively evaluated for impairment					615	494
Total ending allowance balance	615	496	494	499	615	494
Loans individually evaluated for impairment					258	357
Loans collectively evaluated for impairment					81,666	72,591
Total ending loans balance					81,924	72,948
Consumer Portfolio Segment [Member]
Beginning balance	65	51	59	60
Provision for loan losses	(2)	10	14	4
Loans charged-off	(7)	(14)	(23)	(21)
Recoveries	6	7	12	11
Total ending allowance balance	62	54	62	54
Individually evaluated for impairment
Collectively evaluated for impairment					62	59
Total ending allowance balance	$ 62	$ 54	$ 59	$ 60	62	59
Loans individually evaluated for impairment
Loans collectively evaluated for impairment					6,486	5,164
Total ending loans balance					$ 6,486	$ 5,164

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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