Note 2 - Investment Securities (Details) - Amortized Cost and Fair Value of Available for Sale Securities (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Note 2 - Investment Securities (Details) - Amortized Cost and Fair Value of Available for Sale Securities [Line Items]
Investment - Amortized Cost	$ 59,439	$ 61,323
Investment - Gross Unrealized Gains	1,076	2,233
Investment - Gross Unrealized Losses	(1,109)	(90)
Investment - Estimated Fair Value	59,406	63,466
US Government Agency Securities [Member]
Note 2 - Investment Securities (Details) - Amortized Cost and Fair Value of Available for Sale Securities [Line Items]
Investment - Amortized Cost	28,675	28,825
Investment - Gross Unrealized Gains	599	1,049
Investment - Gross Unrealized Losses	(240)	(32)
Investment - Estimated Fair Value	29,034	29,842
Mortgage-Backed Securities [Member]
Note 2 - Investment Securities (Details) - Amortized Cost and Fair Value of Available for Sale Securities [Line Items]
Investment - Amortized Cost	16,325	21,533
Investment - Gross Unrealized Gains	196	486
Investment - Gross Unrealized Losses	(147)	(35)
Investment - Estimated Fair Value	16,374	21,984
Municipal Securities [Member]
Note 2 - Investment Securities (Details) - Amortized Cost and Fair Value of Available for Sale Securities [Line Items]
Investment - Amortized Cost	14,439	10,965
Investment - Gross Unrealized Gains	281	698
Investment - Gross Unrealized Losses	(722)	(23)
Investment - Estimated Fair Value	$ 13,998	$ 11,640