Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Real Estate Construction And Land Development [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	$ 4,794	$ 5,821
Restructured Loans	4,219	4,391
Loans Past Due 90 Days Or More And Still Accruing	0	0
Real Estate Mortgage Residential [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	5,149	5,154
Restructured Loans	4,532	4,826
Loans Past Due 90 Days Or More And Still Accruing	0	10
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	7,937	12,677
Restructured Loans	16,657	16,987
Loans Past Due 90 Days Or More And Still Accruing	0	434
Commercial And Industrial [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	199	160
Restructured Loans	0	0
Loans Past Due 90 Days Or More And Still Accruing	0	0
Commercial Other [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	11
Restructured Loans	0
Loans Past Due 90 Days Or More And Still Accruing	0
Consumer Secured [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	5	3
Restructured Loans	0	0
Loans Past Due 90 Days Or More And Still Accruing	0	0
Consumer Unsecured [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	0	1
Restructured Loans	48	51
Loans Past Due 90 Days Or More And Still Accruing	0	0
Total [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual	18,095	23,838
Restructured Loans	25,456	26,255
Loans Past Due 90 Days Or More And Still Accruing	0	444
Lease Financing [Member]
Note 7 - Loans and Allowance for Loan Losses (Details) - Recorded Investment In Nonperforming Loans By Class Of Loans [Line Items]
Nonaccrual		22
Restructured Loans		0
Loans Past Due 90 Days Or More And Still Accruing		$ 0