Note 14 - Financial Derivatives (Details) (USD $)	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended		0 Months Ended	1 Months Ended		1 Months Ended		0 Months Ended	3 Months Ended	9 Months Ended			9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	May 31, 2014	Sep. 30, 2014 Interest Expense [Member] Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member]	Sep. 30, 2014 Interest Expense [Member] 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]	Sep. 30, 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]	Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow 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]	Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member]	Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member]	Sep. 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]	May 31, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] London Interbank Offered Rate (LIBOR) [Member] Weighted Average [Member]	Sep. 30, 2014 Positive Fair Value Member	Dec. 31, 2013 Positive Fair Value Member	Sep. 30, 2014 Negative Fair Value Member	Dec. 31, 2013 Negative Fair Value Member	Sep. 30, 2014 Cash [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative Asset, Number of Instruments Held								5
Derivative, Notional Amount								$ 119,100,000	$ (119,100,000)				$ 147,400,000	$ 147,400,000	$ 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%
Derivative, Average Variable Interest Rate													3.13%	3.13%		0.23%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	100,000	(163,000)					(163,000)					442,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net				723,000	824,000
Derivative Liability, Number of Instruments Held															10
Derivative, Average Basis Spread on Variable Rate													2.98%	2.98%
Net Settlement of Derivatives Reducing Interest Income													580,000	606,000
Collateral Already Posted, Aggregate Fair Value																					4,300,000
Notional Amount Of Option Contract	0	0																200,000
Sum of Spot and Forward Contract Notional Amount																	183,800,000	267,600,000	201,200,000	236,300,000
Increase Decrease in Fair Value																	1,900,000	6,200,000	(4,400,000)	(6,100,000)
Open Option Contracts Written, at Fair Value																		$ 83