Note 3 - Loans (Details) - Major Classifications of Loans (USD $)	Jun. 30, 2013		Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Major Classifications of Loans	$ 673,326,000		$ 676,190,000
Less allowance for loan losses	(34,769,000)		(35,907,000)
Loans, net	638,557,000		640,283,000
Real Estate - Residential Mortgage (Member)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Major Classifications of Loans	151,371,000		149,257,000
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Major Classifications of Loans	5,330,000	[1]	5,062,000	[1]
commercial, financial and agricultural (Member)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Major Classifications of Loans	193,414,000	[2]	205,052,000	[2]
Equity Lines (Member)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Major Classifications of Loans	33,104,000		33,324,000
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Major Classifications of Loans	5,251,000		5,309,000
consumer finance (Member)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Major Classifications of Loans	$ 284,856,000		$ 278,186,000

[1] Includes the Corporation's real estate construction lending and consumer real estate lot lending.

[2] Includes the Corporation's commercial real estate lending, land acquisition and development lending, builder line lending and commercial business lending.