Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans [Line Items]
Non Accrual Loans	$ 9,052	$ 10,920
1-4 Family Porfolio Segment[Member]
Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans [Line Items]
Non Accrual Loans	1,621	1,564
Commercial Real Estate Portfolio Segment [Member] | Residential Developments [Member]
Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans [Line Items]
Non Accrual Loans	6,382	8,483
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member]
Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans [Line Items]
Non Accrual Loans	235	267
Consumer Portfolio Segment [Member]
Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans [Line Items]
Non Accrual Loans	797	486
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans [Line Items]
Non Accrual Loans	0	80
Commercial Portfolio Segment [Member] | Commercial Business Other [Member]
Note 9 - Allowance for Loan Losses and Credit Quality Information (Details) - Non-Accrual Loans [Line Items]
Non Accrual Loans	$ 17	$ 40