Note 6 - Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2013
Note 6 - Derivative Financial Instruments (Details) [Line Items]
Long-term Federal Home Loan Bank Advances, Current	$ 20,000
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Note 6 - Derivative Financial Instruments (Details) [Line Items]
Derivative, Notional Amount	30,000
Derivative Maturing 12/6/2016 [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Note 6 - Derivative Financial Instruments (Details) [Line Items]
Derivative, Notional Amount	10,000	$ 10,000
Derivative Maturing 12/6/2020 [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Note 6 - Derivative Financial Instruments (Details) [Line Items]
Derivative, Notional Amount	$ 20,000