Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	$ 187,595	$ 220,357
Gross Unrealized Gains	2,838	1,684
Gross Unrealized Losses	(1,054)	(5,401)
Estimated Fair Value	189,379	216,640
Amortized Costs	36,888	36,696
Estimated Fair Value	36,816
US Government Agencies Debt Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	7,841	6,580
Gross Unrealized Gains	32
Gross Unrealized Losses	(48)	(316)
Estimated Fair Value	7,825	6,264
Obligations of State and Political Subdivisions [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	55,567	60,370
Gross Unrealized Gains	1,683	672
Gross Unrealized Losses	(89)	(1,833)
Estimated Fair Value	57,161	59,209
Amortized Costs	36,888	36,696
Gross Unrealized Gains	551	36
Gross Unrealized Losses	(623)	(2,707)
Estimated Fair Value	36,816	34,025
Residential Mortgage Backed Securities and Collateralized Mortgage Obligations [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	46,390	64,026
Gross Unrealized Gains	371	318
Gross Unrealized Losses	(263)	(1,353)
Estimated Fair Value	46,498	62,991
Corporate Debt Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	39,523	48,836
Gross Unrealized Gains	398	282
Gross Unrealized Losses	(204)	(888)
Estimated Fair Value	39,717	48,230
Commercial Mortgage Backed Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	11,235	10,828
Gross Unrealized Gains	29	24
Gross Unrealized Losses	(164)	(380)
Estimated Fair Value	11,100	10,472
Asset-backed Securities [Member]
Note 5 - Securities (Details) - Amortized Costs, Gross Unrealized Gains, Gross Unrealized Losses and Approximate Fair Values of Investment Securities [Line Items]
Amortized Costs	27,039	29,717
Gross Unrealized Gains	325	388
Gross Unrealized Losses	(286)	(631)
Estimated Fair Value	$ 27,078	$ 29,474