Note 3 - Securities (Details) - Securities by Contractual Maturity (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Securities by Contractual Maturity [Abstract]
Due in one year or less	$ 1,003
Due in one year or less	1,006
Due in one year or less	1,220
Due in one year or less	1,223
Due in over one to five years	6,730
Due in over one to five years	7,116
Due in over one to five years	8,014
Due in over one to five years	7,992
Due in over five to ten years	11,569
Due in over five to ten years	12,122
Due after ten years	3,202
Due after ten years	3,121
Agency mortgage-backed securities, residential	79,047
Agency mortgage-backed securities, residential	80,976
Agency mortgage-backed securities, residential	8
Agency mortgage-backed securities, residential	8
Total debt securities	88,064
Total debt securities	89,974
Total debt securities	22,729us-gaap_HeldToMaturitySecurities	22,820us-gaap_HeldToMaturitySecurities
Total debt securities	$ 23,590	$ 23,570

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This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.