Note 8 - Credit Quality of Financing Receivables (Details) - Risk Classification of Financing Receivables by Portfolio Class - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Impaired [Line Items]
Risk Classification	$ 548,242	$ 461,093
Pass [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	531,278	432,726
Special Mention [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	11,294	16,887
Substandard [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	5,652	11,456
Doubtful [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	18	24
Non-Accrual [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	41	47
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	231,343	251,824
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	219,814	245,360
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	6,080	6,440
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	5,435	4
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	14	20
Commercial Portfolio Segment [Member] | Non-Accrual [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	37	43
Education Government Non Profit Leases [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	70,390	78,111
Education Government Non Profit Leases [Member] | Pass [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	69,865	76,569
Education Government Non Profit Leases [Member] | Special Mention [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	304	566
Education Government Non Profit Leases [Member] | Substandard [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	217	972
Education Government Non Profit Leases [Member] | Doubtful [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	4	4
Education Government Non Profit Leases [Member] | Non-Accrual [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	4	4
Commercial And Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	238,986	123,251
Commercial And Industrial Loans [Member] | Pass [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	234,076	108,453
Commercial And Industrial Loans [Member] | Special Mention [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	4,910	9,881
Commercial And Industrial Loans [Member] | Substandard [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification		4,917
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	7,523	7,907
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification	$ 7,523	2,344
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Impaired [Line Items]
Risk Classification		$ 5,563