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Note 4 - Loans and Allowance for Loan Losses - Allowance for Loan Losses Activity by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Balance | $ 7,639 | $ 6,952 | $ 7,499 | $ 7,699
Provision for loan losses | 962 | 1,601 | 1,695 | 1,921
Loans charged off | (1,042) | (1,501) | (2,380) | (3,367)
Recoveries | 756 | 261 | 1,501 | 1,060
Balance | 8,315 | 7,313 | 8,315 | 7,313
Residential Portfolio Segment [Member] |  |  |  |
Balance | 1,886 | 1,300 | 1,470 | 939
Provision for loan losses | 681 | 493 | 1,261 | 870
Loans charged off | (184) | (445) | (421) | (591)
Recoveries | 49 | 83 | 122 | 213
Balance | 2,432 | 1,431 | 2,432 | 1,431
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Balance | 2,392 | 2,813 | 2,978 | 4,315
Provision for loan losses | (378) | 540 | (1,041) | (636)
Loans charged off |  | (434) | (1) | (1,046)
Recoveries | 431 | 41 | 509 | 327
Balance | 2,445 | 2,960 | 2,445 | 2,960
Commercial and Industrial Portfolio Segment [Member] |  |  |  |
Balance | 1,242 | 932 | 1,024 | 907
Provision for loan losses | 197 | 238 | 196 | 588
Loans charged off | (136) | (202) | (140) | (605)
Recoveries | 80 | 4 | 303 | 82
Balance | 1,383 | 972 | 1,383 | 972
Consumer Portfolio Segment [Member] |  |  |  |
Balance | 2,119 | 1,907 | 2,027 | 1,538
Provision for loan losses | 462 | 330 | 1,279 | 1,099
Loans charged off | (722) | (420) | (1,818) | (1,125)
Recoveries | 196 | 133 | 567 | 438
Balance | $ 2,055 | $ 1,950 | $ 2,055 | $ 1,950

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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 direct write-downs of financing receivables charged against the allowance. + 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 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + 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)(2) -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 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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