Note 5 - Securities (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Security Owned and Pledged as Collateral, Fair Value	$ 49,237,000
Held-to-maturity Securities Pledged as Collateral	19,900,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	50	73
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 0	$ 22,000