Note 2 - Securities (Details) - Future Contractual Maturities Of Debt Securities (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Future Contractual Maturities Of Debt Securities [Abstract]
Within one year	$ 701
Within one year	702
Within one year	0
Within one year	0
Within two to five years	22,556
Within two to five years	22,460
Within two to five years	0
Within two to five years	0
Within six to ten years	75,677
Within six to ten years	72,283
Within six to ten years	0
Within six to ten years	0
After ten years	17,341
After ten years	16,583
After ten years	4,047
After ten years	4,445
Mortgage-backed securities and collateralized mortgage obligations	57,740
Mortgage-backed securities and collateralized mortgage obligations	57,594
Mortgage-backed securities and collateralized mortgage obligations	0
Mortgage-backed securities and collateralized mortgage obligations	0
Total debt securities	174,015
Total debt securities	169,622
Total debt securities	4,047	4,046
Total debt securities	$ 4,445	$ 4,757