Note 11 - Derivative Financial Instruments (Details) (USD $)	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Note 11 - Derivative Financial Instruments (Details) [Line Items]
Junior Subordinated Notes, Portion Exposed To Rising Interest Rates	$ 18,000,000			$ 18,000,000
Junior Subordinated Notes, Contractual Value	61,900,000		61,900,000	61,900,000
Derivative, Notional Amount		61,900,000
Derivative Asset, Notional Amount	29,041,000			129,217,000
Not Designated as Hedging Instrument [Member]
Note 11 - Derivative Financial Instruments (Details) [Line Items]
Derivative Asset, Notional Amount	18,000,000			118,000,000
Designated as Hedging Instrument [Member]
Note 11 - Derivative Financial Instruments (Details) [Line Items]
Derivative Asset, Notional Amount	$ 11,000,000			$ 11,200,000