Note 5 - Securities (Details) - Available for Sale Securities (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Available for Sale:
Amortized Costs	$ 209,433	$ 186,667
Gross Unrealized Gains	1,396	3,946
Gross Unrealized Losses	18,604	798
Fair Values	192,225	189,815
US Treasury Securities [Member]
Available for Sale:
Amortized Costs	2,001	2,005
Gross Unrealized Gains	11	68
Fair Values	2,012	2,073
US Government Agencies [Member]
Available for Sale:
Amortized Costs	169,815	128,805
Gross Unrealized Gains	253	1,381
Gross Unrealized Losses	17,925	622
Fair Values	152,143	129,564
Mortgage-backed Securities [Member]
Available for Sale:
Amortized Costs	2,919	4,202
Gross Unrealized Gains	234	367
Fair Values	3,153	4,569
States and Political Subdivisions [Member]
Available for Sale:
Amortized Costs	23,742	35,029
Gross Unrealized Gains	785	1,753
Gross Unrealized Losses	123	3
Fair Values	24,404	36,779
Corporate Securities [Member]
Available for Sale:
Amortized Costs	8,805	14,207
Gross Unrealized Gains	113	368
Gross Unrealized Losses	541
Fair Values	8,377	14,575
Other Securities [Member]
Available for Sale:
Amortized Costs	2,151	2,419
Gross Unrealized Gains		9
Gross Unrealized Losses	15	173
Fair Values	$ 2,136	$ 2,255