Note 2 - Securities (Detail) - Investments by Contractual Maturity (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Due in one year or less	$ 31,036
Due in one year or less	31,272
Due after one year through five years	39,805
Due after one year through five years	42,011
Due after five years through ten years	45,669
Due after five years through ten years	49,147
Due after ten years	25,655
Due after ten years	27,903
Preferred stock	27
Preferred stock	188
	142,192	143,661
	$ 150,521	$ 152,817