Note 7 - Loans and Allowance for Loan Losses (Details) - Major Classifications of Loans - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Real Estate
Loan receivable	$ 962,289	$ 959,275
Less unearned income	0	0
Total loans, net of unearned income	962,289	959,275
Real Estate Portfolio Segment [Member]
Real Estate
Total loans, net of unearned income	862,915	857,036
Real Estate Portfolio Segment [Member] \| Real Estate Construction and Land Development [Member]
Real Estate
Loan receivable	123,093	115,516
Total loans, net of unearned income	123,093	115,516
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Residential [Member]
Real Estate
Loan receivable	349,725	355,134
Total loans, net of unearned income	349,725	355,134
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Farmland and Other Commercial Enterprises [Member]
Real Estate
Loan receivable	390,097	386,386
Total loans, net of unearned income	390,097	386,386
Commercial Portfolio Segment [Member]
Real Estate
Total loans, net of unearned income	89,803	89,820
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Real Estate
Loan receivable	48,243	48,379
Total loans, net of unearned income	48,243	48,379
Commercial Portfolio Segment [Member] \| States and Political Subdivisions [Member]
Real Estate
Loan receivable	20,013	17,643
Total loans, net of unearned income	20,013	17,643
Commercial Portfolio Segment [Member] \| Commercial Other [Member]
Real Estate
Loan receivable	21,547	23,798
Total loans, net of unearned income	21,547	23,798
Consumer Portfolio Segment [Member]
Real Estate
Total loans, net of unearned income	9,571	12,419
Consumer Portfolio Segment [Member] \| Consumer Secured [Member]
Real Estate
Loan receivable	4,583	6,665
Total loans, net of unearned income	4,583	6,665
Consumer Portfolio Segment [Member] \| Consumer Unsecured [Member]
Real Estate
Loan receivable	4,988	5,754
Total loans, net of unearned income	$ 4,988	$ 5,754

Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65890831&loc=d3e10152-111534

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

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