Note 10 - Credit Quality of Financing Receivables and Allowance for Credit Losses - Risk Classification of Financing Receivables by Portfolio Class (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
Pass [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	$ 165,660	$ 174,679
Pass [Member] | Education Government Non-profit Leases [Member]
Risk classification of financing receivables	54,879	58,344
Pass [Member] | Commercial and Industrial Loans [Member]
Risk classification of financing receivables	420,809	397,910
Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables	6,569	6,679
Pass [Member]
Risk classification of financing receivables	647,917	637,612
Special Mention [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	5,462	6,308
Special Mention [Member] | Education Government Non-profit Leases [Member]
Risk classification of financing receivables	334	380
Special Mention [Member] | Commercial and Industrial Loans [Member]
Risk classification of financing receivables		3,719
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables
Special Mention [Member]
Risk classification of financing receivables	5,796	10,407
Substandard [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	227	241
Substandard [Member] | Education Government Non-profit Leases [Member]
Risk classification of financing receivables
Substandard [Member] | Commercial and Industrial Loans [Member]
Risk classification of financing receivables
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables
Substandard [Member]
Risk classification of financing receivables	227	241
Doubtful [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	10	10
Doubtful [Member] | Education Government Non-profit Leases [Member]
Risk classification of financing receivables	2	2
Doubtful [Member] | Commercial and Industrial Loans [Member]
Risk classification of financing receivables
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables
Doubtful [Member]
Risk classification of financing receivables	12	12
Non-accrual [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	10	10
Non-accrual [Member] | Education Government Non-profit Leases [Member]
Risk classification of financing receivables	2	2
Non-accrual [Member] | Commercial and Industrial Loans [Member]
Risk classification of financing receivables
Non-accrual [Member] | Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables
Non-accrual [Member]
Risk classification of financing receivables	12	12
Commercial Portfolio Segment [Member]
Risk classification of financing receivables	171,359	181,238
Education Government Non-profit Leases [Member]
Risk classification of financing receivables	55,215	58,726
Commercial and Industrial Loans [Member]
Risk classification of financing receivables	420,809	401,629
Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables	6,569	6,679
Risk classification of financing receivables	$ 653,952	$ 648,272