Note 2 - Securities (Detail) - Future Contractual Maturities Of Debt Securities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Within one year	$ 706
Within one year	725
Within two to five years	8,083
Within two to five years	8,357
Within six to ten years	74,247
Within six to ten years	74,816
After ten years	11,552
After ten years	11,911
After ten years	4,046
After ten years	4,772
Mortgage-backed securities and collateralized mortgage obligations	66,360
Mortgage-backed securities and collateralized mortgage obligations	68,109
Total debt securities	160,948
Total debt securities	163,918
Total debt securities	4,046
Total debt securities	$ 4,772	$ 4,536