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Note 4 - Allowance for Loan Losses - Segregated by Class of Loan (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Allowance for loan losses, beginning balance |  |  | $ 7,508 | $ 8,923
Allowance for loan losses, charge-offs |  |  | (837) | (2,283)
Allowance for loan losses, recoveries |  |  | 353 | 1,002
Provision for Loan Losses | $ 61 |  | 131 | 335
Allowance for loan losses, ending balance | 7,155 | 7,977 | 7,155 | 7,977
Allowance for loan losses, provision | 61 |  | 131 | 335
Commercial [Member] | Commercial and Agricultural Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 447 | 456
Allowance for loan losses, charge-offs |  |  | (118) | (215)
Allowance for loan losses, recoveries |  |  | 114 | 124
Provision for Loan Losses |  |  | (59) | 71
Allowance for loan losses, ending balance | 384 | 436 | 384 | 436
Allowance for loan losses, provision |  |  | (59) | 71
Commercial [Member] | Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 3,874 | 5,751
Allowance for loan losses, charge-offs |  |  | (258) | (966)
Allowance for loan losses, recoveries |  |  | 39 | 523
Provision for Loan Losses |  |  | 626 | (1,085)
Allowance for loan losses, ending balance | 4,281 | 4,223 | 4,281 | 4,223
Allowance for loan losses, provision |  |  | 626 | (1,085)
Agricultural [Member] | Commercial and Agricultural Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 186 | 168
Allowance for loan losses, charge-offs |  |  | (123) | (160)
Allowance for loan losses, recoveries |  |  | 7 | 3
Provision for Loan Losses |  |  | 245 | 238
Allowance for loan losses, ending balance | 315 | 249 | 315 | 249
Allowance for loan losses, provision |  |  | 245 | 238
Commercial Construction [Member] | Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 1,216 | 323
Allowance for loan losses, charge-offs |  |  | 0 | (49)
Allowance for loan losses, recoveries |  |  | 39 | 241
Provision for Loan Losses |  |  | (1,130) | 473
Allowance for loan losses, ending balance | 125 | 988 | 125 | 988
Allowance for loan losses, provision |  |  | (1,130) | 473
Residential Construction [Member] | Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  |  | 13
Allowance for loan losses, charge-offs |  |  | 0 | 0
Allowance for loan losses, recoveries |  |  | 0 | 0
Provision for Loan Losses |  |  | 17 | (7)
Allowance for loan losses, ending balance | 17 | 6 | 17 | 6
Allowance for loan losses, provision |  |  | 17 | (7)
Residential [Member] | Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 968 | 1,396
Allowance for loan losses, charge-offs |  |  | (124) | (648)
Allowance for loan losses, recoveries |  |  | 83 | 47
Provision for Loan Losses |  |  | 255 | 334
Allowance for loan losses, ending balance | 1,182 | 1,129 | 1,182 | 1,129
Allowance for loan losses, provision |  |  | 255 | 334
Farmland [Member] | Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 780 | 722
Allowance for loan losses, charge-offs |  |  | 0 | (61)
Allowance for loan losses, recoveries |  |  | 11 | 2
Provision for Loan Losses |  |  | (61) | 209
Allowance for loan losses, ending balance | 730 | 872 | 730 | 872
Allowance for loan losses, provision |  |  | (61) | 209
Consumer [Member] | Consumer and Other Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 34 | 80
Allowance for loan losses, charge-offs |  |  | (214) | (184)
Allowance for loan losses, recoveries |  |  | 59 | 60
Provision for Loan Losses |  |  | 214 | 100
Allowance for loan losses, ending balance | 93 | 56 | 93 | 56
Allowance for loan losses, provision |  |  | 214 | 100
Other [Member] | Consumer and Other Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, beginning balance |  |  | 3 | 14
Allowance for loan losses, charge-offs |  |  |  | 0
Allowance for loan losses, recoveries |  |  | 1 | 2
Provision for Loan Losses |  |  | 24 | 2
Allowance for loan losses, ending balance | $ 28 | $ 18 | 28 | 18
Allowance for loan losses, provision |  |  | $ 24 | $ 2

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=82894903&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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