Note 2 - Investment Securities (Details) - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity [Abstract]
Due in one year or less	$ 1,074
Due in one year or less	1,080
Due in one year or less	0
Due in one year or less	0
Due after one year through five years	19,274
Due after one year through five years	19,405
Due after one year through five years	0
Due after one year through five years	0
Due after five years through ten years	20,009
Due after five years through ten years	20,537
Due after ten years	12,773
Due after ten years	13,369
Due after ten years	0
Due after ten years	0
	53,130
	54,391
	0
	0
Mortgage-backed securities and CMO	44,562
Mortgage-backed securities and CMO	44,955
Mortgage-backed securities and CMO	6
Mortgage-backed securities and CMO	6
	97,692
	99,346
	6us-gaap_HeldToMaturitySecurities	6us-gaap_HeldToMaturitySecurities
	$ 6	$ 6

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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.