Note 4 - Loans and Allowance for Loan Losses (Details) - Aging Analysis of Loans - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Real Estate:
Loans, past due	$ 4,666	$ 6,956
Loans, current	954,609	924,987
Loans, total	959,275	931,943
Loans, past due and still accruing	0	0
Loans, nonaccrual	8,380	11,508
Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	571	1,584
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	4,095	5,372
Real Estate Portfolio Segment [Member]
Real Estate:
Loans, total	857,036	833,344
Real Estate Portfolio Segment [Member] \| Real Estate Construction and Land Development [Member]
Real Estate:
Loans, past due	227	272
Loans, current	115,289	96,773
Loans, total	115,516	97,045
Loans, past due and still accruing	0	0
Loans, nonaccrual	1,567	3,744
Real Estate Portfolio Segment [Member] \| Real Estate Construction and Land Development [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	0	0
Real Estate Portfolio Segment [Member] \| Real Estate Construction and Land Development [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	227	272
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Residential [Member]
Real Estate:
Loans, past due	1,869	2,990
Loans, current	353,265	358,032
Loans, total	355,134	361,022
Loans, past due and still accruing	0	0
Loans, nonaccrual	2,485	3,474
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Residential [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	421	1,395
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Residential [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	1,448	1,595
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Farmland and Other Commercial Enterprises [Member]
Real Estate:
Loans, past due	2,418	3,559
Loans, current	383,968	371,718
Loans, total	386,386	375,277
Loans, past due and still accruing	0	0
Loans, nonaccrual	4,266	4,202
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Farmland and Other Commercial Enterprises [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	42	75
Real Estate Portfolio Segment [Member] \| Real Estate Mortgage Farmland and Other Commercial Enterprises [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	2,376	3,484
Commercial Portfolio Segment [Member]
Real Estate:
Loans, total	89,820	85,186
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Real Estate:
Loans, past due	85	13
Loans, current	48,294	47,099
Loans, total	48,379	47,112
Loans, past due and still accruing	0	0
Loans, nonaccrual	44	81
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	42	0
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	43	13
Commercial Portfolio Segment [Member] \| States and Political Subdivisions [Member]
Real Estate:
Loans, past due	0	0
Loans, current	17,643	22,369
Loans, total	17,643	22,369
Loans, past due and still accruing	0	0
Loans, nonaccrual	0	0
Commercial Portfolio Segment [Member] \| States and Political Subdivisions [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	0	0
Commercial Portfolio Segment [Member] \| States and Political Subdivisions [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	0	0
Commercial Portfolio Segment [Member] \| Commercial Other [Member]
Real Estate:
Loans, past due	39	47
Loans, current	23,759	15,500
Loans, total	23,798	15,547
Loans, past due and still accruing	0	0
Loans, nonaccrual	8	7
Commercial Portfolio Segment [Member] \| Commercial Other [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	39	40
Commercial Portfolio Segment [Member] \| Commercial Other [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	0	7
Commercial Portfolio Segment [Member] \| Lease Financing [Member]
Real Estate:
Loans, past due		0
Loans, current		158
Loans, total		158
Loans, past due and still accruing		0
Loans, nonaccrual		0
Commercial Portfolio Segment [Member] \| Lease Financing [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due		0
Commercial Portfolio Segment [Member] \| Lease Financing [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due		0
Consumer Portfolio Segment [Member]
Real Estate:
Loans, total	12,419	13,413
Consumer Portfolio Segment [Member] \| Consumer Secured [Member]
Real Estate:
Loans, past due	10	58
Loans, current	6,655	7,905
Loans, total	6,665	7,963
Loans, past due and still accruing	0	0
Loans, nonaccrual	10	0
Consumer Portfolio Segment [Member] \| Consumer Secured [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	9	58
Consumer Portfolio Segment [Member] \| Consumer Secured [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	1	0
Consumer Portfolio Segment [Member] \| Consumer Unsecured [Member]
Real Estate:
Loans, past due	18	17
Loans, current	5,736	5,433
Loans, total	5,754	5,450
Loans, past due and still accruing	0	0
Loans, nonaccrual	0	0
Consumer Portfolio Segment [Member] \| Consumer Unsecured [Member] \| Financing Receivables, 30 to 89 Days Past Due [Member]
Real Estate:
Loans, past due	18	16
Consumer Portfolio Segment [Member] \| Consumer Unsecured [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Real Estate:
Loans, past due	$ 0	$ 1

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

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-Publisher FASB
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Financing receivables that are current.

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-Publisher FASB
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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