Note 3 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Jun. 30, 2016
Beginning balance	$ 3,684	$ 2,514	$ 3,566	$ 2,432
Provision for loan losses	140	192	276	284
Loans charged-off	(731)	(155)	(756)	(176)
Recoveries	30	4	37	15
Total ending allowance balance	3,123	2,555	3,123	2,555
Individually evaluated for impairment					$ 62	$ 874
Collectively evaluated for impairment					3,061	2,692
Total ending allowance balance	3,123	2,514	3,123	2,555	3,123	3,566
Loans individually evaluated for impairment					1,950	6,892
Loans collectively evaluated for impairment					263,468	249,935
Total ending loans balance					265,418	256,827
Commercial Portfolio Segment [Member]
Beginning balance	510	387	505	316
Provision for loan losses	(14)	10	(9)	81
Loans charged-off
Recoveries	1		1
Total ending allowance balance	497	397	497	397
Individually evaluated for impairment					4
Collectively evaluated for impairment					493	505
Total ending allowance balance	510	387	497	397	497	505
Loans individually evaluated for impairment					41	1,029
Loans collectively evaluated for impairment					41,992	42,219
Total ending loans balance					42,033	43,248
Commercial Real Estate Portfolio Segment [Member]
Beginning balance	2,643	1,727	2,518	1,660
Provision for loan losses	157	3	282	73
Loans charged-off	(700)	(2)	(700)	(5)
Recoveries
Total ending allowance balance	2,100	1,728	2,100	1,728
Individually evaluated for impairment					56	868
Collectively evaluated for impairment					2,044	1,650
Total ending allowance balance	2,643	1,727	2,100	1,728	2,100	2,518
Loans individually evaluated for impairment					1,482	5,105
Loans collectively evaluated for impairment					161,271	155,734
Total ending loans balance					162,753	160,839
Residential Portfolio Segment [Member]
Beginning balance	411	278	402	289
Provision for loan losses	51	149	78	138
Loans charged-off	(23)	(120)	(44)	(120)
Recoveries	26		29
Total ending allowance balance	465	307	465	307
Individually evaluated for impairment					2	6
Collectively evaluated for impairment					463	396
Total ending allowance balance	411	278	465	307	465	402
Loans individually evaluated for impairment					427	758
Loans collectively evaluated for impairment					54,843	46,166
Total ending loans balance					55,270	46,924
Consumer Portfolio Segment [Member]
Beginning balance	120	122	141	167
Provision for loan losses	(54)	30	(75)	(8)
Loans charged-off	(8)	(33)	(12)	(51)
Recoveries	3	4	7	15
Total ending allowance balance	61	123	61	123
Individually evaluated for impairment
Collectively evaluated for impairment					61	141
Total ending allowance balance	$ 120	$ 122	$ 61	$ 123	61	141
Loans individually evaluated for impairment
Loans collectively evaluated for impairment					5,362	5,816
Total ending loans balance					$ 5,362	$ 5,816