Note 4 - Allowance for Loan Losses (Details) - Loans by Credit Quality Indicators (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 282,650	$ 274,937
Construction Residential [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	6,676	5,036
Construction Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction Residential [Member] | Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction Residential [Member] | Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	6,676	5,036
Construction Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	6,676	5,036
Land Acquistion, Development and Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	16,536	16,479
Land Acquistion, Development and Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Land Acquistion, Development and Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,550	1,963
Land Acquistion, Development and Commercial [Member] | Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	62	1,756
Land Acquistion, Development and Commercial [Member] | Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	18,148	20,198
Land Acquistion, Development and Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	18,148	20,198
Real Estate Residential [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	61,864	63,299
Real Estate Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	4,404	5,581
Real Estate Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	226	229
Real Estate Residential [Member] | Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	928	582
Real Estate Residential [Member] | Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	67,422	69,691
Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	67,422	69,691
Real Estate Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	118,681	103,010
Real Estate Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,439	2,479
Real Estate Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	3,056	3,577
Real Estate Commercial [Member] | Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	236
Real Estate Commercial [Member] | Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	124,176	109,302
Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	124,176	109,302
Commercial, Industrial and Agricultural [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	36,382	41,313
Commercial, Industrial and Agricultural [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	114	131
Commercial, Industrial and Agricultural [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	549	938
Commercial, Industrial and Agricultural [Member] | Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	173	0
Commercial, Industrial and Agricultural [Member] | Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	37,218	42,382
Commercial, Industrial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	37,218	42,382
Equity Lines [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	19,608	20,364
Equity Lines [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	25
Equity Lines [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Equity Lines [Member] | Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	60	115
Equity Lines [Member] | Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	19,668	20,504
Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	19,668	20,504
Consumer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	9,342	7,824
Consumer [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer [Member] | Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer [Member] | Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	9,342	7,824
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	9,342	7,824
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	269,089	257,325
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	6,957	8,216
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,381	6,707
Substandard Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,223	2,689
Doubtful Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 282,650	$ 274,937