Note 4 - Loans (Details) - Impaired Loans with Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans	$ 5,566	$ 6,262
Unpaid Principal Balance	5,796	6,471
Related Allowance	1,026	1,043
Average Balance-Impaired Loans	5,500	5,542
Interest Income Recognized	60	219
Real Estate - Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans	2,039	2,601
Unpaid Principal Balance	2,142	2,694
Related Allowance	377	390
Average Balance-Impaired Loans	2,059	2,090
Interest Income Recognized	26	99
Commercial Real Estate Lending [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans	2,778	2,729
Unpaid Principal Balance	2,847	2,780
Related Allowance	501	504
Average Balance-Impaired Loans	2,784	2,748
Interest Income Recognized	31	99
Builder Line Lending [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans	13	13
Unpaid Principal Balance	16	16
Related Allowance	4	4
Average Balance-Impaired Loans	13	14
Interest Income Recognized		1
Commercial Business Lending [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans	609	695
Unpaid Principal Balance	666	756
Related Allowance	130	131
Average Balance-Impaired Loans	517	562
Interest Income Recognized	2	11
Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans	34	131
Unpaid Principal Balance	32	132
Average Balance-Impaired Loans	93	33
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans	93	93
Unpaid Principal Balance	93	93
Related Allowance	14	14
Average Balance-Impaired Loans	34	95
Interest Income Recognized	$ 1	$ 9