Note 3 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Jun. 30, 2018
Beginning balance	$ 3,569	$ 3,225	$ 3,422	$ 3,086
Provision for loan losses	105	100	(555)	250
Loans charged-off	(34)	(15)	(110)	(56)
Recoveries	16	13	899	43
Total ending allowance balance	3,656	3,323	3,656	3,323
Individually evaluated for impairment					$ 7	$ 29
Collectively evaluated for impairment					3,649	3,393
Total ending allowance balance	3,656	3,225	3,656	3,323	3,656	3,422
Loans individually evaluated for impairment					1,799	2,060
Loans collectively evaluated for impairment					346,535	317,181
Total ending loans balance					348,334	319,241
Commercial Portfolio Segment [Member]
Beginning balance	622	555	586	518
Provision for loan losses		4	36	39
Loans charged-off
Recoveries				2
Total ending allowance balance	622	559	622	559
Individually evaluated for impairment
Collectively evaluated for impairment					622	586
Total ending allowance balance	622	555	622	559	622	586
Loans individually evaluated for impairment					112	100
Loans collectively evaluated for impairment					69,694	60,979
Total ending loans balance					69,806	61,079
Commercial Real Estate Portfolio Segment [Member]
Beginning balance	2,397	2,144	2,277	2,038
Provision for loan losses	102	96	(591)	178
Loans charged-off	(25)	(4)	(80)	(4)
Recoveries	7	1	875	25
Total ending allowance balance	2,481	2,237	2,481	2,237
Individually evaluated for impairment					7	29
Collectively evaluated for impairment					2,474	2,248
Total ending allowance balance	2,397	2,144	2,481	2,237	2,481	2,277
Loans individually evaluated for impairment					1,320	1,562
Loans collectively evaluated for impairment					202,868	187,191
Total ending loans balance					204,188	188,753
Residential Portfolio Segment [Member]
Beginning balance	496	461	499	473
Provision for loan losses	5	15	(2)	35
Loans charged-off				(33)
Recoveries	2	2	6	3
Total ending allowance balance	503	478	503	478
Individually evaluated for impairment
Collectively evaluated for impairment					503	499
Total ending allowance balance	496	461	503	478	503	499
Loans individually evaluated for impairment					367	398
Loans collectively evaluated for impairment					69,977	64,135
Total ending loans balance					70,344	64,533
Consumer Portfolio Segment [Member]
Beginning balance	54	65	60	57
Provision for loan losses	(2)	(15)	2	(2)
Loans charged-off	(9)	(11)	(30)	(19)
Recoveries	7	10	18	13
Total ending allowance balance	50	49	50	49
Individually evaluated for impairment
Collectively evaluated for impairment					50	60
Total ending allowance balance	$ 54	$ 65	$ 50	$ 49	50	60
Loans individually evaluated for impairment
Loans collectively evaluated for impairment					3,996	4,876
Total ending loans balance					$ 3,996	$ 4,876

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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