Note 5 - Securities (Details) - Available for Sale Securities (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Available for Sale:
Amortized Costs	$ 207,406	$ 203,268
Gross Unrealized Gains	1,491	1,255
Gross Unrealized Losses	13,490	22,811
Available-for-sale Securities Fair Value	195,407	181,712
US Government Agencies [Member]
Available for Sale:
Amortized Costs	174,800	169,818
Gross Unrealized Gains	301	199
Gross Unrealized Losses	13,215	22,163
Available-for-sale Securities Fair Value	161,886	147,854
States And Political Subdivisions [Member]
Available for Sale:
Amortized Costs	21,428	22,830
Gross Unrealized Gains	912	746
Gross Unrealized Losses	5	120
Available-for-sale Securities Fair Value	22,335	23,456
Mortgage-backed Securities [Member]
Available for Sale:
Amortized Costs	2,188	2,627
Gross Unrealized Gains	212	213
Available-for-sale Securities Fair Value	2,400	2,840
Corporate Securities [Member]
Available for Sale:
Amortized Costs	8,801	7,804
Gross Unrealized Gains	66	97
Gross Unrealized Losses	198	506
Available-for-sale Securities Fair Value	8,669	7,395
Other Securities [Member]
Available for Sale:
Amortized Costs	189	189
Gross Unrealized Losses	72	22
Available-for-sale Securities Fair Value	$ 117	$ 167