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Note 19 - Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Note 19 - Derivative Financial Instruments (Details) [Line Items]    
Junior Subordinated Notes $ 29,018 $ 28,771
Derivative Asset, Notional Amount 164,864 50,792
Unrealized Gain (Loss) on Derivatives 0 0
Not Designated as Hedging Instrument [Member]    
Note 19 - Derivative Financial Instruments (Details) [Line Items]    
Derivative Asset, Notional Amount 36,300  
Designated as Hedging Instrument [Member]    
Note 19 - Derivative Financial Instruments (Details) [Line Items]    
Derivative Asset, Notional Amount 128,500 14,500
Interest Rate Swap [Member]    
Note 19 - Derivative Financial Instruments (Details) [Line Items]    
Derivative Asset, Notional Amount 146,900 32,800
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]    
Note 19 - Derivative Financial Instruments (Details) [Line Items]    
Derivative Asset, Notional Amount 36,321 36,321
Floating Rate Junior Subordinated Debentures [Member]    
Note 19 - Derivative Financial Instruments (Details) [Line Items]    
Derivative, Amount of Hedged Item 18,000 18,000
Junior Subordinated Notes $ 61,900 $ 61,900