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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Balance | $ 6,952 | $ 6,934 | $ 6,952 | $ 6,934
Balance | 7,315 | 6,946 | 7,699 | 6,648
Provision for loan losses | 175 | 141 | 320 | 620
Loans charged off | (909) | (472) | (1,866) | (1,059)
Recoveries | 371 | 319 | 799 | 725
Residential Portfolio Segment [Member] |  |  |  |
Balance | 1,300 | 906 | 1,300 | 906
Balance | 1,392 | 1,185 | 939 | 1,087
Provision for loan losses | (68) | (258) | 377 | (218)
Loans charged off | (73) | (67) | (146) | (171)
Recoveries | 49 | 46 | 130 | 208
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Balance | 2,813 | 3,464 | 2,813 | 3,464
Balance | 2,729 | 1,995 | 4,315 | 1,959
Provision for loan losses | (89) | 1,445 | (1,176) | 1,462
Loans charged off | (53) | (52) | (612) | (52)
Recoveries | 226 | 76 | 286 | 95
Commercial and Industrial Portfolio Segment [Member] |  |  |  |
Balance | 932 | 1,416 | 932 | 1,416
Balance | 1,360 | 2,672 | 907 | 2,589
Provision for loan losses | (35) | (1,266) | 350 | (1,184)
Loans charged off | (399) |  | (403) |
Recoveries | 6 | 10 | 78 | 11
Consumer Portfolio Segment [Member] |  |  |  |
Balance | 1,907 | 1,148 | 1,907 | 1,148
Balance | 1,834 | 1,094 | 1,538 | 1,013
Provision for loan losses | 367 | 220 | 769 | 560
Loans charged off | (384) | (353) | (705) | (836)
Recoveries | $ 90 | $ 187 | $ 305 | $ 411

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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 (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://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -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://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=84173941&loc=SL6953423-111524 Reference 2: 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 3: 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=98514028&loc=d3e3602-108585 + Details
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