Note 8 - Credit Quality of Financing Receivables - Risk Classification of Financing Receivables by Portfolio Class (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Risk classification of financing receivables	$ 503,954	$ 648,272
Commercial Portfolio Segment [Member]
Risk classification of financing receivables	146,684	181,238
Education Government Non-profit Leases [Member]
Risk classification of financing receivables	46,057	58,726
Commercial and Industrial Loans [Member]
Risk classification of financing receivables	306,826	401,629
Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables	4,387	6,679
Pass [Member]
Risk classification of financing receivables	495,366	637,612
Pass [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	143,387	174,679
Pass [Member] | Education Government Non-profit Leases [Member]
Risk classification of financing receivables	45,859	58,344
Pass [Member] | Commercial and Industrial Loans [Member]
Risk classification of financing receivables	301,733	397,910
Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables	4,387	6,679
Special Mention [Member]
Risk classification of financing receivables	8,585	10,407
Special Mention [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	3,296	6,308
Special Mention [Member] | Education Government Non-profit Leases [Member]
Risk classification of financing receivables	196	380
Special Mention [Member] | Commercial and Industrial Loans [Member]
Risk classification of financing receivables	5,093	3,719
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Risk classification of financing receivables
Substandard [Member]
Risk classification of financing receivables		241
Substandard [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables		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
Doubtful [Member]
Risk classification of financing receivables	3	12
Doubtful [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	1	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
Non-accrual [Member]
Risk classification of financing receivables	3	12
Non-accrual [Member] | Commercial Portfolio Segment [Member]
Risk classification of financing receivables	1	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