Note 7 - Securities Available for Sale (Details) - Securities by Contractual Maturity - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Securities by Contractual Maturity [Abstract]
Due less than one year	$ 8,180
Due less than one year	8,228
Due after one year through five years	132,979
Due after one year through five years	133,376
Due after five years through ten years	3,038
Due after five years through ten years	3,051
Due after ten years	978
Due after ten years	631
No stated maturity	58
No stated maturity	52
Total	145,233	$ 138,527
Total	$ 145,338	$ 137,834