Note 14 - Financial Derivatives (Details)	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014 USD ($)	May. 31, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Oct. 31, 2014 USD ($)
Note 14 - Financial Derivatives (Details) [Line Items]
Junior Subordinated Notes		$ 119,100,000
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			$ 2,328,000	$ (263,000)	$ 740,000	$ (263,000)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative Asset, Number of Instruments Held		5
Derivative, Notional Amount		$ 119,100,000	119,100,000		119,100,000
Derivative, Original Maturity		10 years
Derivative, Average Fixed Interest Rate		2.61%
Derivative, Average Variable Interest Rate		0.28%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax					(1,700,000)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Notional Amount	$ 148,100,000		$ 179,400,000	$ 148,100,000	$ 179,400,000	$ 148,100,000		$ 34,900,000
Derivative, Average Fixed Interest Rate			4.60%		4.60%
Derivative, Average Variable Interest Rate			3.11%		3.11%
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax					$ (1,200,000)
Derivative Liability, Number of Instruments Held	10			10		10		4
Derivative, Average Basis Spread on Variable Rate			2.92%		2.92%
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps			$ 703,000	$ 101,000	$ 1,400,000	$ 101,000
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Interest Income [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Net Accrued on Interest Rate Swaps			682,000	$ 26,000	1,400,000	$ 26,000
Cash [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Collateral Already Posted, Aggregate Fair Value			7,200,000		7,200,000
Positive Fair Value Member
Note 14 - Financial Derivatives (Details) [Line Items]
Sum of Spot and Forward Contract Notional Amount			193,100,000		193,100,000		$ 167,000,000
Increase (Decrease) in Fair Value					2,300,000		1,900,000
Negative Fair Value Member
Note 14 - Financial Derivatives (Details) [Line Items]
Sum of Spot and Forward Contract Notional Amount			$ 188,000,000		188,000,000		178,900,000
Increase (Decrease) in Fair Value					$ (3,200,000)		$ (5,000,000)
Minimum [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity	4 years
Maximum [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Note 14 - Financial Derivatives (Details) [Line Items]
Derivative, Original Maturity	8 years