Note 3 - Loans and Allowance for Loan Losses (Details) - Aging Analysis of Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 999,883	$ 1,004,995
Real Estate Construction And Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	58	908
90 Days Or More Past Due	613	1,361
Total	671	2,269
Current	100,681	100,185
Total Loans	101,352	102,454
Real Estate Mortgage Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	1,225	2,303
90 Days Or More Past Due	2,502	2,500
Total	3,727	4,803
Current	367,855	363,959
Total Loans	371,582	368,762
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	3,548	1,990
90 Days Or More Past Due	7,978	10,724
Total	11,526	12,714
Current	406,621	412,763
Total Loans	418,147	425,477
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	71	108
90 Days Or More Past Due	53	53
Total	124	161
Current	47,302	46,651
Total Loans	47,426	46,812
States and Political Subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	0	0
90 Days Or More Past Due	0	0
Total	0	0
Current	21,561	21,472
Total Loans	21,561	21,472
Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	0	1
90 Days Or More Past Due	22	53
Total	22	54
Current	861	2,561
Total Loans	883	2,615
Commercial Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	56	38
90 Days Or More Past Due	0	399
Total	56	437
Current	23,784	18,719
Total Loans	23,840	19,156
Consumer Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	41	69
90 Days Or More Past Due	3	0
Total	44	69
Current	8,535	11,663
Total Loans	8,579	11,732
Consumer Unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	58	137
90 Days Or More Past Due	1	0
Total	59	137
Current	6,454	6,378
Total Loans	6,513	6,515
Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-89 Days Past Due	5,057	5,554
90 Days Or More Past Due	11,172	15,090
Total	16,229	20,644
Current	983,654	984,351
Total Loans	$ 999,883	$ 1,004,995