Note 5 - Securities (Details) - Available for Sale Securities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Available for Sale:
Amortized Costs	$ 214,396	$ 203,268
Gross Unrealized Gains	1,534	1,255
Gross Unrealized Losses	10,910	22,811
Available-for-sale Securities Fair Value	205,020	181,712
US Government Agencies [Member]
Available for Sale:
Amortized Costs	184,737	169,818
Gross Unrealized Gains	380	199
Gross Unrealized Losses	10,673	22,163
Available-for-sale Securities Fair Value	174,444	147,854
States And Political Subdivisions [Member]
Available for Sale:
Amortized Costs	19,657	22,830
Gross Unrealized Gains	894	746
Gross Unrealized Losses	6	120
Available-for-sale Securities Fair Value	20,545	23,456
Mortgage-backed Securities [Member]
Available for Sale:
Amortized Costs	2,012	2,627
Gross Unrealized Gains	194	213
Available-for-sale Securities Fair Value	2,206	2,840
Corporate Securities [Member]
Available for Sale:
Amortized Costs	7,801	7,804
Gross Unrealized Gains	66	97
Gross Unrealized Losses	175	506
Available-for-sale Securities Fair Value	7,692	7,395
Other Securities [Member]
Available for Sale:
Amortized Costs	189	189
Gross Unrealized Losses	56	22
Available-for-sale Securities Fair Value	$ 133	$ 167