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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 |  |  |  |  |  |  |

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