Note 6 - Loans (Details) - Age Analysis of Past Due Loans (USD $)	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 4,054,000	$ 3,256,000
60-89 Days Past Due	876,000	461,000
Greater Than 90 Days	3,476,000	3,167,000
Total Past Due	8,406,000	6,884,000
Current	598,643,000	591,111,000
Total	607,049,000	597,995,000
Recorded Investment > 90 Days and Accruing	0	0
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	717,000	0
60-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	717,000	0
Current	165,030,000	170,429,000
Total	165,747,000	170,429,000
Recorded Investment > 90 Days and Accruing	0	0
Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Current	17,500,000	18,545,000
Total	17,500,000	18,545,000
Recorded Investment > 90 Days and Accruing	0	0
Commercial Real Estate Other Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	461,000	0
60-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	461,000	0
Current	291,579,000	289,360,000
Total	292,040,000	289,360,000
Recorded Investment > 90 Days and Accruing	0	0
Residential One To Four Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,343,000	3,125,000
60-89 Days Past Due	876,000	436,000
Greater Than 90 Days	3,476,000	3,167,000
Total Past Due	6,695,000	6,728,000
Current	63,689,000	63,963,000
Total	70,384,000	70,691,000
Recorded Investment > 90 Days and Accruing	0	0
Residential Real Estate and Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	444,000	131,000
60-89 Days Past Due	0	25,000
Greater Than 90 Days	0	0
Total Past Due	444,000	156,000
Current	45,075,000	45,306,000
Total	45,519,000	45,462,000
Recorded Investment > 90 Days and Accruing	0	0
Consumer Other Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	89,000	0
60-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	89,000	0
Current	15,770,000	3,508,000
Total	15,859,000	3,508,000
Recorded Investment > 90 Days and Accruing	$ 0	$ 0