Note 3 - Loans Receivable (Details) - Impaired Loans (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	$ 12,165,000	$ 14,292,000
Unpaid Principal Balance - With No Related Allowance	12,370,000	14,676,000
Average Balance Total Loans - With No Related Allowance	12,858,000	14,307,000
Interest Income Recognized - With No Related Allowance	340,000	683,000
Recorded Investment in Loans - With An Allowance Recorded	439,000	1,338,000
Unpaid Principal Balance - With An Allowance Recorded	439,000	1,338,000
Related Allowance - With An Allowance Recorded	126,000	208,000
Average Balance Total Loans - With An Allowance Recorded	440,000	1,338,000
Interest Income Recognized - With An Allowance Recorded	10,000	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	126,000	137,000
Average Balance Total Loans - With An Allowance Recorded	440,000	199,000
Interest Income Recognized - With An Allowance Recorded	10,000	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	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
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	1,915,000	3,632,000
Unpaid Principal Balance - With No Related Allowance	1,975,000	3,692,000
Average Balance Total Loans - With No Related Allowance	1,921,000	3,647,000
Interest Income Recognized - With No Related Allowance	49,000	187,000
Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	268,000	611,000
Unpaid Principal Balance - With No Related Allowance	414,000	611,000
Average Balance Total Loans - With No Related Allowance	420,000	611,000
Interest Income Recognized - With No Related Allowance	10,000	23,000
Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	9,377,000	9,018,000
Unpaid Principal Balance - With No Related Allowance	9,376,000	9,018,000
Average Balance Total Loans - With No Related Allowance	9,393,000	9,018,000
Interest Income Recognized - With No Related Allowance	243,000	440,000
Commercial, Industrial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Loans - With No Related Allowance	605,000	916,000
Unpaid Principal Balance - With No Related Allowance	605,000	916,000
Average Balance Total Loans - With No Related Allowance	1,124,000	916,000
Interest Income Recognized - With No Related Allowance	38,000	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