Note 3 - Loans - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016
Commercial Portfolio Segment [Member]
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 No Related Allowance, Average Recorded Investment	660
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
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	16		386
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	16		384
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	329	12
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
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Real Estate Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	62		2,121
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	62		2,106
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,555	2,059
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 Related Allowance, Unpaid Principal Balance	2,728		2,802
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,534		2,615
Impaired Financing Receivable, Related Allowance	895		868
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,449	894
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	8	9
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	8	9
Residential Portfolio Segment [Member] | Residential Real Estate Owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	127		175
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	127		174
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	127	267
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 Related Allowance, Unpaid Principal Balance	176		177
Impaired Financing Receivable, with Related Allowance, Recorded Investment	177		177
Impaired Financing Receivable, Related Allowance	6		6
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	177	122
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	2	2
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	2	2
Residential Portfolio Segment [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	207		722
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	206		407
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	208	77
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 Related Allowance, Unpaid Principal Balance
Impaired Financing Receivable, with Related Allowance, Recorded Investment
Impaired Financing Receivable, Related Allowance
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		458
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		4
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		4
Impaired Financing Receivable, Related Allowance	901		874
Impaired Financing Receivable, Unpaid Principal Balance	3,316		7,416
Impaired Financing Receivable, Recorded Investment	3,122		$ 6,892
Impaired Financing Receivable, Average Recorded Investment	5,505	3,889
Impaired Financing Receivable, Interest Income, Accrual Method	201	15
Impaired Financing Receivable, Interest Income, Cash Basis Method	$ 201	$ 15