Note 15 - Fair Values (Details)	3 Months Ended
	Mar. 31, 2016 USD ($)
Note 15 - Fair Values (Details) [Line Items]
Future Cash Flows Discounted	6.05%
Carrying Value of Loans Fully Charged Off	$ 0
Collateral Impaired Loans [Member]
Note 15 - Fair Values (Details) [Line Items]
Collateral Dependent Impaired Loans Carrying Amount	1,100,000
Fair Value Written Down	941,000
Allowance for Loan and Lease Losses, Adjustments, Other	164,000
Other Real Estate Owned [Member]
Note 15 - Fair Values (Details) [Line Items]
Fair Value Written Down	363,000
Allowance for Loan and Lease Losses, Adjustments, Other	$ 55,000
Number of Real Estate Properties	3
OREO Carry Amount	$ 418,000
Minimum [Member]
Note 15 - Fair Values (Details) [Line Items]
Other Real Estate Owned, Fair Value Adjustments, Estimated Selling Costs, Percentage	8.00%
Maximum [Member]
Note 15 - Fair Values (Details) [Line Items]
Other Real Estate Owned, Fair Value Adjustments, Estimated Selling Costs, Percentage	15.00%