Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Real Estate Construction And Land Development [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	$ 5,821	$ 7,700
Restructured Loans	4,391	8,736
Loans Past Due 90 Days Or More And Still Accruing	0	0
Real Estate Mortgage Residential [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	5,154	6,025
Restructured Loans	4,826	634
Loans Past Due 90 Days Or More And Still Accruing	10	0
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	12,677	12,878
Restructured Loans	16,987	16,940
Loans Past Due 90 Days Or More And Still Accruing	434	103
Commercial And Industrial [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	160	649
Restructured Loans	0	0
Loans Past Due 90 Days Or More And Still Accruing	0	0
Lease Financing [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	22	53
Restructured Loans	0	0
Loans Past Due 90 Days Or More And Still Accruing	0	0
Consumer Secured [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	3	9
Restructured Loans	0	0
Loans Past Due 90 Days Or More And Still Accruing	0	0
Consumer Unsecured [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	1	94
Restructured Loans	51	39
Loans Past Due 90 Days Or More And Still Accruing	0	0
Total [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Recorded Investment in Nonperforming Loans by Class of Loans [Line Items]
Nonaccrual	23,838	27,408
Restructured Loans	26,255	26,349
Loans Past Due 90 Days Or More And Still Accruing	$ 444	$ 103