Note 4 - Securities (Details)	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015
Note 4 - Securities (Details) [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	73		59
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities (in Dollars)		$ 0
Sold in January 2015 [Member]
Note 4 - Securities (Details) [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	3
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities (in Dollars)	$ 22,000