Note 18 - Parent Company Financial Information (Details) - Condensed Balance Sheet (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 3,569,000	$ 594,000
Investment securities available-for-sale	388,670,000	401,502,000
Other assets	10,365,000	9,102,000
Total assets	932,883,000	919,874,000
Other liabilities	2,178,000	2,351,000
Shareholders' equity	75,625,000	77,623,000	70,841,000
Total liabilities and shareholders' equity	932,883,000	919,874,000
Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	24,000	102,000
Investment securities available-for-sale	6,625,000	4,055,000
Investment in subsidiary	69,215,000	73,002,000
Other assets	15,000	464,000
Total assets	75,879,000	77,623,000
Other liabilities	254,000
Shareholders' equity	75,625,000	77,623,000
Total liabilities and shareholders' equity	$ 75,879,000	$ 77,623,000