Note 2 - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Note 2 - Fair Value of Financial Instruments (Details) [Line Items]
Selling Costs, Percentage	10.00%
Impaired Financing Receivable, Related Allowance	$ 2,212		$ 2,164
Other Real Estate	1,147		1,147
Other Real Estate, Gross	2,217		2,217
Real Estate Owned, Valuation Allowance	1,070		1,070
SEC Schedule III, Real Estate, Write-down or Reserve, Amount	0	$ 0
Collateral Dependent Loans [Member]
Note 2 - Fair Value of Financial Instruments (Details) [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	7,928		7,811
Impaired Financing Receivable, Related Allowance	1,648		1,559
Provision for Loan Losses Expensed	89	$ 150	741
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 0		$ 1,422