Note 3 - Loans Receivable (Details) - Impaired Loans (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	$ 11,399,000	$ 14,292,000
Unpaid Principal Balance - With No Related Allowance	11,399,000	14,676,000
Average Balance Total Loans - With No Related Allowance	12,044,000	14,307,000
Interest Income Recognized - With No Related Allowance	459,000	683,000
Recorded Investment in Loans - With An Allowance Recorded	482,000	1,338,000
Unpaid Principal Balance - With An Allowance Recorded	482,000	1,338,000
Related Allowance - With An Allowance Recorded	173,000	208,000
Average Balance Total Loans - With An Allowance Recorded	472,000	1,338,000
Interest Income Recognized - With An Allowance Recorded	15,000	87,000
Construction Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With An Allowance Recorded	0	0
Unpaid Principal Balance - With An Allowance Recorded	0	0
Related Allowance - With An Allowance Recorded	0	0
Average Balance Total Loans - With An Allowance Recorded	0	0
Interest Income Recognized - With An Allowance Recorded	0	0
Land Acquistion, Development and Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With An Allowance Recorded	0	0
Unpaid Principal Balance - With An Allowance Recorded	0	0
Related Allowance - With An Allowance Recorded	0	0
Average Balance Total Loans - With An Allowance Recorded	0	0
Interest Income Recognized - With An Allowance Recorded	0	0
Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With An Allowance Recorded	439,000	199,000
Unpaid Principal Balance - With An Allowance Recorded	439,000	199,000
Related Allowance - With An Allowance Recorded	163,000	137,000
Average Balance Total Loans - With An Allowance Recorded	440,000	199,000
Interest Income Recognized - With An Allowance Recorded	14,000	13,000
Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With An Allowance Recorded	0	1,139,000
Unpaid Principal Balance - With An Allowance Recorded	0	1,139,000
Related Allowance - With An Allowance Recorded	0	71,000
Average Balance Total Loans - With An Allowance Recorded	0	1,139,000
Interest Income Recognized - With An Allowance Recorded	0	74,000
Commercial, Industrial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With An Allowance Recorded	43,000	0
Unpaid Principal Balance - With An Allowance Recorded	43,000	0
Related Allowance - With An Allowance Recorded	10,000	0
Average Balance Total Loans - With An Allowance Recorded	32,000	0
Interest Income Recognized - With An Allowance Recorded	1,000	0
Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With An Allowance Recorded	0	0
Unpaid Principal Balance - With An Allowance Recorded	0	0
Related Allowance - With An Allowance Recorded	0	0
Average Balance Total Loans - With An Allowance Recorded	0	0
Interest Income Recognized - With An Allowance Recorded	0	0
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With An Allowance Recorded	0	0
Unpaid Principal Balance - With An Allowance Recorded	0	0
Related Allowance - With An Allowance Recorded	0	0
Average Balance Total Loans - With An Allowance Recorded	0	0
Interest Income Recognized - With An Allowance Recorded	0	0
Construction Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	0	0
Unpaid Principal Balance - With No Related Allowance	0	0
Average Balance Total Loans - With No Related Allowance	0	0
Interest Income Recognized - With No Related Allowance	0	0
Land Acquistion, Development and Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	1,550,000	3,632,000
Unpaid Principal Balance - With No Related Allowance	1,550,000	3,692,000
Average Balance Total Loans - With No Related Allowance	1,550,000	3,647,000
Interest Income Recognized - With No Related Allowance	56,000	187,000
Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	225,000	611,000
Unpaid Principal Balance - With No Related Allowance	225,000	611,000
Average Balance Total Loans - With No Related Allowance	226,000	611,000
Interest Income Recognized - With No Related Allowance	7,000	23,000
Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	9,341,000	9,018,000
Unpaid Principal Balance - With No Related Allowance	9,341,000	9,018,000
Average Balance Total Loans - With No Related Allowance	9,383,000	9,018,000
Interest Income Recognized - With No Related Allowance	353,000	440,000
Commercial, Industrial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	283,000	916,000
Unpaid Principal Balance - With No Related Allowance	283,000	916,000
Average Balance Total Loans - With No Related Allowance	885,000	916,000
Interest Income Recognized - With No Related Allowance	43,000	33,000
Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	0	115,000
Unpaid Principal Balance - With No Related Allowance	0	439,000
Average Balance Total Loans - With No Related Allowance	0	115,000
Interest Income Recognized - With No Related Allowance	0	0
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	0	0
Unpaid Principal Balance - With No Related Allowance	0	0
Average Balance Total Loans - With No Related Allowance	0	0
Interest Income Recognized - With No Related Allowance	$ 0	$ 0