Note 2 - Securities (Details) - Investments by Contractual Maturity (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Investments by Contractual Maturity [Abstract]
Due in one year or less	$ 28,829
Due in one year or less	28,338
Due after one year through five years	39,349
Due after one year through five years	40,738
Due after five years through ten years	49,852
Due after five years through ten years	50,997
Due after ten years	26,166
Due after ten years	27,257
Preferred stock	27
Preferred stock	258
	144,223	143,661
	$ 147,588	$ 152,817