Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	$ 157,309	$ 186,986
Fair Value, Measurements, Nonrecurring [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	2,192	10,485
Fair Value, Measurements, Nonrecurring [Member] | Collateral Dependent Impaired Loans [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	1,617	10,319
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	575	166
Fair Value, Inputs, Level 1 [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value		2,571
Fair Value, Inputs, Level 2 [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	157,309	184,415
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	2,192	10,485
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Collateral Dependent Impaired Loans [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	1,617	10,319
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member]
Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis [Line Items]
Assets measured at fair value	$ 575	$ 166