Note 4 - Allowance for Loan Losses - Segregated by Class of Loan (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Commercial [Member] \| Commercial and Agricultural Portfolio Segment [Member]
Allowance for loan losses, beginning balance			$ 855	$ 497
Allowance for loan losses, charge-offs			(291)	(257)
Allowance for loan losses, recoveries			54	45
Provision for Loan Losses			(127)	17
Allowance for loan losses, ending balance	$ 491	$ 302	491	302
Commercial [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			3,851	3,665
Allowance for loan losses, charge-offs			(992)	(275)
Allowance for loan losses, recoveries			197	138
Provision for Loan Losses			2,231	296
Allowance for loan losses, ending balance	5,287	3,824	5,287	3,824
Agricultural [Member] \| Commercial and Agricultural Portfolio Segment [Member]
Allowance for loan losses, beginning balance			203	304
Allowance for loan losses, charge-offs			(18)	(5)
Allowance for loan losses, recoveries			3	3
Provision for Loan Losses			93	4
Allowance for loan losses, ending balance	281	306	281	306
Commercial Construction [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			691	1,223
Allowance for loan losses, charge-offs			(25)	(96)
Allowance for loan losses, recoveries			813	282
Provision for Loan Losses			(1,021)	282
Allowance for loan losses, ending balance	458	1,691	458	1,691
Residential Construction [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			20	138
Allowance for loan losses, charge-offs
Allowance for loan losses, recoveries
Provision for Loan Losses			2
Allowance for loan losses, ending balance	22	138	22	138
Residential [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			1,990	2,425
Allowance for loan losses, charge-offs			(243)	(910)
Allowance for loan losses, recoveries			32	95
Provision for Loan Losses			(114)	85
Allowance for loan losses, ending balance	1,665	1,695	1,665	1,695
Farmland [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			912	104
Allowance for loan losses, charge-offs				(40)
Allowance for loan losses, recoveries			137	10
Provision for Loan Losses			(187)	3
Allowance for loan losses, ending balance	862	77	862	77
Consumer [Member] \| Consumer and Other Portfolio Segment [Member]
Allowance for loan losses, beginning balance			63	67
Allowance for loan losses, charge-offs			(180)	(167)
Allowance for loan losses, recoveries			44	47
Provision for Loan Losses			176	53
Allowance for loan losses, ending balance	103		103
Other [Member] \| Consumer and Other Portfolio Segment [Member]
Allowance for loan losses, beginning balance			19	379
Allowance for loan losses, charge-offs				(26)
Allowance for loan losses, recoveries			6	15
Provision for Loan Losses			9	1
Allowance for loan losses, ending balance	34	369	34	369
Allowance for loan losses, beginning balance			8,604	8,802
Allowance for loan losses, charge-offs			(1,749)	(1,776)
Allowance for loan losses, recoveries			1,286	635
Provision for Loan Losses	354	250	1,062	741
Allowance for loan losses, ending balance	$ 9,203	$ 8,402	$ 9,203	$ 8,402

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount of expense related to estimated loss from loan and lease transactions.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
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