Note 15 - Fair Values (Details) - Fair Value of Assets Measured on a Non-recurring Basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 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	$ 166,890	$ 186,986
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	166,890	184,415
Fair Value, Inputs, Level 3 [Member] | Collateral Dependent Impaired Loans [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	479	10,319
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [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	51	166
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	530	10,485
Collateral Dependent Impaired Loans [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	479	10,319
Other Real Estate Owned [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	51	166
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	$ 530	$ 10,485