Note 3 - Loans - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
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	95
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Real Estate Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,121	$ 2,432
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,106	2,082
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,344	1,844
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		145
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		145
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,802	740
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,615	704
Impaired Financing Receivable, Related Allowance	868	58
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,103	761
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	8	36
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	8	36
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	386
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	384
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	52
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method
Residential Portfolio Segment [Member] | Residential Real Estate Owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	175	58
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	174	35
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	357	187
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	2	34
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	2	34
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	177	122
Impaired Financing Receivable, with Related Allowance, Recorded Investment	177	123
Impaired Financing Receivable, Related Allowance	6	4
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	149	125
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		7
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		7
Residential Portfolio Segment [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	722
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	407
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	435	48
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method		15
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		15
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		512
Impaired Financing Receivable, with Related Allowance, Recorded Investment		457
Impaired Financing Receivable, Related Allowance		8
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	115	483
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method		19
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		19
Impaired Financing Receivable, Related Allowance	874	70
Impaired Financing Receivable, Unpaid Principal Balance	7,416	3,864
Impaired Financing Receivable, Recorded Investment	6,892	3,401
Impaired Financing Receivable, Average Recorded Investment	4,650	3,448
Impaired Financing Receivable, Interest Income, Accrual Method	10	256
Impaired Financing Receivable, Interest Income, Cash Basis Method	$ 10	$ 256