Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Loans by Risk Category (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	$ 308,335	$ 294,478
Residential Mortgage Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	101,786	103,594
Residential Mortgage Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	212	756
Residential Mortgage Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	1,583	1,625
Residential Mortgage Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	802	1,533
Residential Mortgage Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Residential Mortgage Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	104,383	107,508
Land Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	7,282	7,096
Land Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	94	0
Land Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	3,029	3,144
Land Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	107	120
Land Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Land Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	10,512	10,360
Residential Construction Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	10,776	9,018
Residential Construction Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	592	0
Residential Construction Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Residential Construction Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Residential Construction Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Residential Construction Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	11,368	9,018
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	73,983	71,893
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	4,811	2,627
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	859	690
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	504	1,456
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	80,157	76,666
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	25,077	19,328
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	2,830	458
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	319
Commercial Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	1,864	1,898
Commercial Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	29,771	22,003
Home Equity And Second Mortgage [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	36,956	34,693
Home Equity And Second Mortgage [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	2	198
Home Equity And Second Mortgage [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	111	126
Home Equity And Second Mortgage [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	148	252
Home Equity And Second Mortgage [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Home Equity And Second Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	37,217	35,269
Consumer Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	34,857	33,627
Consumer Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	54	27
Consumer Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	16	0
Consumer Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	34,927	33,654
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	290,717	279,249
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	8,595	4,066
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	5,598	5,904
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	3,425	5,259
Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded investment in loans	$ 0	$ 0