Note 4 - Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017 |
Allowance for loan losses, beginning balance | | | $ 3,758 | [1] | $ 3,636 | $ 3,636 | |
Allowance for loan losses, charge- offs | | | (224) | | | (1,078) | |
Allowance for loan losses, recoveries | | | 36 | | | 58 | |
Allowance for loan losses, provisions | $ 110 | $ 465 | 347 | | 535 | 1,142 | |
Allowance for loan losses, ending balance | 3,917 | | 3,917 | | | 3,758 | [1] |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 3,917 | | 3,917 | | | 3,758 | |
Loans | 461,452 | | 461,452 | | | 444,195 | |
Loans: individually evaluated for impairment | 5,750 | | 5,750 | | | 5,317 | |
Loans: collectively evaluated for impairment | 455,702 | | 455,702 | | | 438,878 | |
Construction Loan Portfolio Segment [Member] | Residential [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 94 | | 63 | 63 | |
Allowance for loan losses, charge- offs | | | | | | | |
Allowance for loan losses, recoveries | | | | | | | |
Allowance for loan losses, provisions | | | 47 | | | 31 | |
Allowance for loan losses, ending balance | 141 | | 141 | | | 94 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 141 | | 141 | | | 94 | |
Loans | 20,143 | | 20,143 | | | 15,221 | |
Loans: individually evaluated for impairment | | | | | | | |
Loans: collectively evaluated for impairment | 20,143 | | 20,143 | | | 15,221 | |
Construction Loan Portfolio Segment [Member] | Land Acquisition Development And Commercial [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 311 | | 173 | 173 | |
Allowance for loan losses, charge- offs | | | | | | (150) | |
Allowance for loan losses, recoveries | | | | | | | |
Allowance for loan losses, provisions | | | (116) | | | 288 | |
Allowance for loan losses, ending balance | 195 | | 195 | | | 311 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 195 | | 195 | | | 311 | |
Loans | 21,343 | | 21,343 | | | 35,601 | |
Loans: individually evaluated for impairment | 223 | | 223 | | | 181 | |
Loans: collectively evaluated for impairment | 21,120 | | 21,120 | | | 35,420 | |
Real Estate Portfolio Segment [Member] | Residential [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 955 | | 866 | 866 | |
Allowance for loan losses, charge- offs | | | (103) | | | (293) | |
Allowance for loan losses, recoveries | | | 30 | | | | |
Allowance for loan losses, provisions | | | 126 | | | 382 | |
Allowance for loan losses, ending balance | 1,008 | | 1,008 | | | 955 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 1,008 | | 1,008 | | | 955 | |
Loans | 134,721 | | 134,721 | | | 121,649 | |
Loans: individually evaluated for impairment | 623 | | 623 | | | 360 | |
Loans: collectively evaluated for impairment | 134,098 | | 134,098 | | | 121,289 | |
Real Estate Portfolio Segment [Member] | Commercial [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 1,603 | | 1,516 | 1,516 | |
Allowance for loan losses, charge- offs | | | | | | (454) | |
Allowance for loan losses, recoveries | | | | | | 43 | |
Allowance for loan losses, provisions | | | 134 | | | 498 | |
Allowance for loan losses, ending balance | 1,737 | | 1,737 | | | 1,603 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 1,737 | | 1,737 | | | 1,603 | |
Loans | 188,677 | | 188,677 | | | 173,999 | |
Loans: individually evaluated for impairment | 4,301 | | 4,301 | | | 4,098 | |
Loans: collectively evaluated for impairment | 184,376 | | 184,376 | | | 169,901 | |
Commercial Industrial and Agricultural Portfolio Segment [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 441 | | 461 | 461 | |
Allowance for loan losses, charge- offs | | | (35) | | | (80) | |
Allowance for loan losses, recoveries | | | 1 | | | | |
Allowance for loan losses, provisions | | | 50 | | | 60 | |
Allowance for loan losses, ending balance | 457 | | 457 | | | 441 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 457 | | 457 | | | 441 | |
Loans | 59,591 | | 59,591 | | | 61,197 | |
Loans: individually evaluated for impairment | 182 | | 182 | | | 379 | |
Loans: collectively evaluated for impairment | 59,409 | | 59,409 | | | 60,818 | |
Equity Lines Portfolio Segment [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 237 | | 338 | 338 | |
Allowance for loan losses, charge- offs | | | | | | | |
Allowance for loan losses, recoveries | | | | | | | |
Allowance for loan losses, provisions | | | 2 | | | (101) | |
Allowance for loan losses, ending balance | 239 | | 239 | | | 237 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 239 | | 239 | | | 237 | |
Loans | 29,294 | | 29,294 | | | 28,835 | |
Loans: individually evaluated for impairment | 421 | | 421 | | | 299 | |
Loans: collectively evaluated for impairment | 28,873 | | 28,873 | | | 28,536 | |
Consumer Portfolio Segment [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 108 | | 97 | 97 | |
Allowance for loan losses, charge- offs | | | (86) | | | (101) | |
Allowance for loan losses, recoveries | | | 5 | | | 15 | |
Allowance for loan losses, provisions | | | 108 | | | 97 | |
Allowance for loan losses, ending balance | 135 | | 135 | | | 108 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 135 | | 135 | | | 108 | |
Loans | 7,683 | | 7,683 | | | 7,693 | |
Loans: individually evaluated for impairment | | | | | | | |
Loans: collectively evaluated for impairment | 7,683 | | 7,683 | | | 7,693 | |
Unallocated Financing Receivables [Member] | | | | | | | |
Allowance for loan losses, beginning balance | | | 9 | | $ 122 | 122 | |
Allowance for loan losses, charge- offs | | | | | | | |
Allowance for loan losses, recoveries | | | | | | | |
Allowance for loan losses, provisions | | | (4) | | | (113) | |
Allowance for loan losses, ending balance | 5 | | 5 | | | 9 | |
Allowance for loan losses: individually evaluated for impairment | | | | | | | |
Allowance for loan losses: collectively evaluated for impairment | 5 | | 5 | | | 9 | |
Loans | | | | | | | |
Loans: individually evaluated for impairment | | | | | | | |
Loans: collectively evaluated for impairment | | | | | | | |
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[1] | Derived from consolidated audited financial statements. |