Note 4 - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Commercial [Member] \| Commercial and Agricultural Portfolio Segment [Member]
Allowance for loan losses, beginning balance			$ 855	$ 497
Allowance for loan losses, charge-offs			(225)	(185)
Allowance for loan losses, recoveries			25	23
Provision for Loan Losses			(100)	11
Allowance for loan losses, ending balance	$ 555	$ 346	555	346
Commercial [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			3,851	3,665
Allowance for loan losses, charge-offs			(569)	(166)
Allowance for loan losses, recoveries			180	128
Provision for Loan Losses			2,136	195
Allowance for loan losses, ending balance	5,598	3,822	5,598	3,822
Agricultural [Member] \| Commercial and Agricultural Portfolio Segment [Member]
Allowance for loan losses, beginning balance			203	304
Allowance for loan losses, charge-offs			(18)
Allowance for loan losses, recoveries			2	2
Provision for Loan Losses			64	3
Allowance for loan losses, ending balance	251	309	251	309
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			804	272
Provision for Loan Losses			(1,032)	187
Allowance for loan losses, ending balance	438	1,586	438	1,586
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	18	138	18	138
Residential [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			1,990	2,425
Allowance for loan losses, charge-offs			(159)	(744)
Allowance for loan losses, recoveries			23	35
Provision for Loan Losses			(242)	57
Allowance for loan losses, ending balance	1,612	1,773	1,612	1,773
Farmland [Member] \| Real Estate Portfolio Segment [Member]
Allowance for loan losses, beginning balance			912	104
Allowance for loan losses, charge-offs
Allowance for loan losses, recoveries			125
Provision for Loan Losses			(241)	2
Allowance for loan losses, ending balance	796	106	796	106
Consumer [Member] \| Consumer and Other Portfolio Segment [Member]
Allowance for loan losses, beginning balance			63	67
Allowance for loan losses, charge-offs			(111)	(90)
Allowance for loan losses, recoveries			21	30
Provision for Loan Losses			123	35
Allowance for loan losses, ending balance	96	42	96	42
Other [Member] \| Consumer and Other Portfolio Segment [Member]
Allowance for loan losses, beginning balance			19	379
Allowance for loan losses, charge-offs				(25)
Allowance for loan losses, recoveries			5	3
Provision for Loan Losses			2	1
Allowance for loan losses, ending balance	26	358	26	358
Allowance for loan losses, beginning balance			8,604	8,802
Allowance for loan losses, charge-offs			(1,107)	(1,306)
Allowance for loan losses, recoveries			1,185	493
Provision for Loan Losses	354	129	708	491
Allowance for loan losses, ending balance	$ 9,390	$ 8,480	$ 9,390	$ 8,480

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.

+ References

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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(d))
-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 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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