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Note 5 - Allowance for Loan Losses - Segregated by Class of Loan (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Allowance for loan losses, beginning balance | $ 7,277 | $ 7,508
Allowance for loan losses, charge-offs | (944) | (141)
Allowance for loan losses, recoveries | 125 | 74
Allowance for loan losses, provision | 131 | 26
Allowance for loan losses, ending balance | 6,589 | 7,467
Allowance for loan losses, provision | 131 | 26
Provision for Loan Losses | 131 | 26
Commercial [Member] | Commercial and Agricultural Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 370 | 447
Allowance for loan losses, charge-offs | (97) | (4)
Allowance for loan losses, recoveries | 6 | 8
Allowance for loan losses, provision | (38) | 19
Allowance for loan losses, ending balance | 241 | 470
Allowance for loan losses, provision | (38) | 19
Provision for Loan Losses | (38) | 19
Commercial [Member] | Real Estate Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 4,549 | 3,874
Allowance for loan losses, charge-offs | (56) |
Allowance for loan losses, recoveries | 33 | 4
Allowance for loan losses, provision | (152) | (551)
Allowance for loan losses, ending balance | 4,374 | 3,327
Allowance for loan losses, provision | (152) | (551)
Provision for Loan Losses | (152) | (551)
Agricultural [Member] | Commercial and Agricultural Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 248 | 186
Allowance for loan losses, charge-offs | 0 | (17)
Allowance for loan losses, recoveries | 0 | 1
Allowance for loan losses, provision | (23) | 32
Allowance for loan losses, ending balance | 225 | 202
Allowance for loan losses, provision | (23) | 32
Provision for Loan Losses | (23) | 32
Commercial Construction [Member] | Real Estate Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 115 | 1,216
Allowance for loan losses, charge-offs | (29) |
Allowance for loan losses, recoveries | 17 | 20
Allowance for loan losses, provision | (88) | 187
Allowance for loan losses, ending balance | 15 | 1,423
Allowance for loan losses, provision | (88) | 187
Provision for Loan Losses | (88) | 187
Residential Construction [Member] | Real Estate Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 16 |
Allowance for loan losses, charge-offs | 0 | 0
Allowance for loan losses, recoveries | 0 | 0
Allowance for loan losses, provision | (11) |
Allowance for loan losses, ending balance | 5 |
Allowance for loan losses, provision | (11) |
Provision for Loan Losses | (11) |
Residential [Member] | Real Estate Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 1,181 | 968
Allowance for loan losses, charge-offs | (629) | (61)
Allowance for loan losses, recoveries | 49 | 12
Allowance for loan losses, provision | 348 | 270
Allowance for loan losses, ending balance | 949 | 1,189
Allowance for loan losses, provision | 348 | 270
Provision for Loan Losses | 348 | 270
Farmland [Member] | Real Estate Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 702 | 780
Allowance for loan losses, charge-offs | (63) |
Allowance for loan losses, recoveries | 1 | 1
Allowance for loan losses, provision | 48 | 24
Allowance for loan losses, ending balance | 688 | 805
Allowance for loan losses, provision | 48 | 24
Provision for Loan Losses | 48 | 24
Consumer [Member] | Consumer and Other Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 86 | 34
Allowance for loan losses, charge-offs | (70) | (59)
Allowance for loan losses, recoveries | 17 | 28
Allowance for loan losses, provision | 36 | 45
Allowance for loan losses, ending balance | 69 | 48
Allowance for loan losses, provision | 36 | 45
Provision for Loan Losses | 36 | 45
Other [Member] | Consumer and Other Portfolio Segment [Member] |  |
Allowance for loan losses, beginning balance | 10 | 3
Allowance for loan losses, charge-offs | 0 |
Allowance for loan losses, recoveries | 2 |
Allowance for loan losses, provision | 11 |
Allowance for loan losses, ending balance | 23 | 3
Allowance for loan losses, provision | 11 |
Provision for Loan Losses | $ 11 |

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- 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=118936363&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=118936363&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=118936363&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=118939070&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=118936363&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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