Note 14 - Financial Derivatives (Details) (USD $)	3 Months Ended	6 Months Ended		1 Months Ended			1 Months Ended				6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	May 31, 2014	May 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member]	May 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Weighted Average [Member]	Jun. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member]	Jun. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] Minimum [Member]	Jun. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] Maximum [Member]	May 31, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] London Interbank Offered Rate (LIBOR) [Member] Weighted Average [Member]	Jun. 30, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member]	Jun. 30, 2014 Positive Fair Value Member	Dec. 31, 2013 Positive Fair Value Member	Jun. 30, 2014 Negative Fair Value Member	Dec. 31, 2013 Negative Fair Value Member	Jun. 30, 2014 Cash [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative Asset, Number of Instruments Held				5
Derivative, Notional Amount				$ 119,100,000		$ 148,100,000
Derivative, Original Maturity				10 years			4 years	8 years
Junior Subordinated Notes			119,100,000
Derivative, Average Fixed Interest Rate					2.61%	4.67%			0.23%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(263,000)	(263,000)		(263,000)
Derivative Liability, Number of Instruments Held										10
Derivative, Average Basis Spread on Variable Rate						2.98%
Derivative, Average Variable Interest Rate						3.13%
Collateral Already Posted, Aggregate Fair Value															3,900,000
Notional Amount Of Option Contract	0	0										200,000
Sum of Spot and Forward Contract Notional Amount											226,100,000	267,600,000	161,800,000	236,300,000
Increase Decrease in Fair Value											3,400,000	6,200,000	(1,600,000)	(6,100,000)
Open Option Contracts Written, at Fair Value												$ 83