Note 2 - Securities (Details) - Future Contractual Maturities Of Debt Securities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Future Contractual Maturities Of Debt Securities [Abstract]
Within one year	$ 0
Within one year	0
Within one year	0
Within one year	0
Within two to five years	20,053
Within two to five years	20,088
Within two to five years	0
Within two to five years	0
Within six to ten years	73,188
Within six to ten years	68,785
Within six to ten years	0
Within six to ten years	0
After ten years	17,268
After ten years	16,438
After ten years	7,788
After ten years	8,108
Mortgage-backed securities and collateralized mortgage obligations	64,462
Mortgage-backed securities and collateralized mortgage obligations	64,395
Mortgage-backed securities and collateralized mortgage obligations	0
Mortgage-backed securities and collateralized mortgage obligations	0
Total debt securities	174,971
Total debt securities	169,706
Total debt securities	7,788	4,046
Total debt securities	$ 8,108	$ 4,757