Note 2 - Investment Securities (Details) - Amortized Cost and Fair Value of Available for Sale Securities (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 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	$ 60,087	$ 61,323
Investment - Gross Unrealized Gains	670	2,233
Investment - Gross Unrealized Losses	(1,148)	(90)
Investment - Estimated Fair Value	59,609	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	27,437	28,825
Investment - Gross Unrealized Gains	352	1,049
Investment - Gross Unrealized Losses	(372)	(32)
Investment - Estimated Fair Value	27,417	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	16,277	21,533
Investment - Gross Unrealized Gains	195	486
Investment - Gross Unrealized Losses	(136)	(35)
Investment - Estimated Fair Value	16,336	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	16,373	10,965
Investment - Gross Unrealized Gains	123	698
Investment - Gross Unrealized Losses	(640)	(23)
Investment - Estimated Fair Value	$ 15,856	$ 11,640