Note 3 - Loans - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016
Impaired Financing Receivable, Related Allowance	$ 62		$ 62		$ 874
Impaired Financing Receivable, Unpaid Principal Balance	2,838		2,838		7,416
Impaired Financing Receivable, Recorded Investment	1,950		1,950		6,892
Impaired Financing Receivable, Average Recorded Investment	2,673	$ 4,417	4,089	$ 4,218
Impaired Financing Receivable, Interest Income, Accrual Method	8	11	209	26
Impaired Financing Receivable, Interest Income, Cash Basis Method	8	11	209	26
Commercial Portfolio Segment [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment			330
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method			80
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method			80
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance					1,033
Impaired Financing Receivable, with No Related Allowance, Recorded Investment					1,029
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	41		41
Impaired Financing Receivable, with Related Allowance, Recorded Investment	41		41
Impaired Financing Receivable, Related Allowance	4		4
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	14		7
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	10	22	170	17
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method			6
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method			6
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	7		7		386
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7		7		384
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Real Estate Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	607	2,202	1,081	2,177
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method			105
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method			105
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,779		1,779		2,121
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	891		891		2,106
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	583		583		2,802
Impaired Financing Receivable, with Related Allowance, Recorded Investment	584		584		2,615
Impaired Financing Receivable, Related Allowance	56		56		868
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,612	1,122	2,030	984
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	7	9	15	18
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	7	9	15	18
Residential Portfolio Segment [Member] | Residential Real Estate Owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	127	280	127	282
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	127		127		175
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	127		127		174
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	101		101		177
Impaired Financing Receivable, with Related Allowance, Recorded Investment	101		101		177
Impaired Financing Receivable, Related Allowance	2		2		6
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	101	187	139	188
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	1	2	3	4
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	1	2	3	4
Residential Portfolio Segment [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	202	604	205	341
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	200		200		722
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 199		$ 199		$ 407
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment				229
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method				4
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method				$ 4