Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	$ 4,504	$ 6,848
Residential Mortgage Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	802	1,533
Loans 90+ Days Past Due Still Accruing	85	180
Total Nonperforming Loans	887	1,713
Residential Mortgage Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	3,317	4,691
Land Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	107	120
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	107	120
Land Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	187	283
Residential Construction Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	0	0
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	0	0
Residential Construction Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	504	1,456
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	504	1,456
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	101	780
Commercial Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,864	1,898
Loans 90+ Days Past Due Still Accruing	0	0
Total Nonperforming Loans	1,864	1,898
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	189	189
Home Equity And Second Mortgage [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	148	252
Loans 90+ Days Past Due Still Accruing	0	39
Total Nonperforming Loans	148	291
Home Equity And Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	389	567
Consumer Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	0	0
Loans 90+ Days Past Due Still Accruing	37	8
Total Nonperforming Loans	37	8
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonperforming Loans	321	338
Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	3,425	5,259
Loans 90+ Days Past Due Still Accruing	122	227
Total Nonperforming Loans	$ 3,547	$ 5,486