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Note 3 - Securities (Details) - The Amortized Cost and Estimated Fair Value of Investment Securities (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Note 3 - Securities (Details) - The Amortized Cost and Estimated Fair Value of Investment Securities [Line Items]
Due in over one to five years	$ 6,322
Due in over one to five years	6,625
Due in over one to five years	9,031
Due in over one to five years	8,788
Due in over five to ten years	9,425
Due in over five to ten years	9,353
Due after ten years	7,985
Due after ten years	7,928
Agency mortgage-backed securities, residential	89,915
Agency mortgage-backed securities, residential	89,949	94,965
Agency mortgage-backed securities, residential	23,746
Agency mortgage-backed securities, residential	23,920	24,624
Total debt securities	89,915
Total debt securities	89,949
Total debt securities	23,746	23,511
Total debt securities	23,920	24,624
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 3 - Securities (Details) - The Amortized Cost and Estimated Fair Value of Investment Securities [Line Items]
Agency mortgage-backed securities, residential	80,884
Agency mortgage-backed securities, residential	81,161
Agency mortgage-backed securities, residential	14
Agency mortgage-backed securities, residential	14
Total debt securities	$ 14

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