Note 3 - Loans (Details) - Loans On Nonaccrual Status (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	$ 7,481	$ 12,116
Commercial real estate lending [Member] | commercial, financial and agricultural (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	3,550	3,426
Land acquisition and development lending [Member] | commercial, financial and agricultural (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	0	5,234
Builder Line Lending [Member] | commercial, financial and agricultural (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	14	15
Commercial Business Lending [Member] | commercial, financial and agricultural (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	702	759
Real Estate - Residential Mortgage (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	2,136	1,805
Equity Lines (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	211	31
consumer (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	188	191
consumer finance (Member)
Note 3 - Loans (Details) - Loans On Nonaccrual Status [Line Items]
Loans on nonaccrual status	$ 680	$ 655