Note 3 - Securities (Details) - The Amortized Cost and Estimated Fair Value of Investment Securities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Note 3 - Securities (Details) - The Amortized Cost and Estimated Fair Value of Investment Securities [Line Items]
Due in one year or less	$ 0
Due in one year or less	0
Due in one year or less	0
Due in one year or less	0
Due in over one to five years	6,116
Due in over one to five years	6,414
Due in over one to five years	9,030
Due in over one to five years	8,855
Due in over five to ten years	0
Due in over five to ten years	0
Due in over five to ten years	9,315
Due in over five to ten years	9,277
Due after ten years	7,884
Due after ten years	7,777
Due after ten years	0
Due after ten years	0
Agency mortgage-backed securities, residential	87,760	92,530
Agency mortgage-backed securities, residential	88,850	94,965
Agency mortgage-backed securities, residential	23,327	23,511
Agency mortgage-backed securities, residential	23,480	24,624
Total debt securities	87,760
Total debt securities	88,850
Total debt securities	23,327	23,511
Total debt securities	23,480	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	78,730	91,521
Agency mortgage-backed securities, residential	79,995	93,953
Agency mortgage-backed securities, residential	12
Agency mortgage-backed securities, residential	12
Total debt securities	$ 12