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Note 6 - Allowance for Loan Losses - Allowance for Loan Losses on PCI Loans and Recorded Investment (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Acquired impaired loans evaluated for impairment | $ 49,920 | $ 61,247
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] |  |
Acquired impaired loans evaluated for impairment | 36,022 | 41,167
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Waccamaw Commercial [Member] |  |
Acquired impaired loans evaluated for impairment |  |
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Peoples Commercial [Member] |  |
Acquired impaired loans evaluated for impairment |  | 4,371
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | 1-4 family, Senior-commercial [Member] |  |
Acquired impaired loans evaluated for impairment | 7,269 | 4,564
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Construction and Land Development [Member] |  |
Acquired impaired loans evaluated for impairment | 2,297 | 1,956
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Farmland and Other Agricultural [Member] |  |
Acquired impaired loans evaluated for impairment | 3,404 | 3,722
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Multifamily [Member] |  |
Acquired impaired loans evaluated for impairment | 1,643 | 1,663
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Commercial Real Estate [Member] |  |
Acquired impaired loans evaluated for impairment | 18,948 | 21,710
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Acquired impaired loans evaluated for impairment | 2,461 | 2,829
Allowance for acquired impaired loans |  |
Commercial Portfolio Segment [Member] | Other Commercial Loan [Member] |  |
Acquired impaired loans evaluated for impairment |  | 352
Allowance for acquired impaired loans |  |
Consumer Real Estate Portfolio Segment [Member] |  |
Acquired impaired loans evaluated for impairment | 13,898 | 20,080
Allowance for acquired impaired loans |  |
Consumer Real Estate Portfolio Segment [Member] | Waccamaw Serviced Home Equity Lines [Member] |  |
Acquired impaired loans evaluated for impairment |  | 2,121
Allowance for acquired impaired loans |  |
Consumer Real Estate Portfolio Segment [Member] | Waccamaw Residential [Member] |  |
Acquired impaired loans evaluated for impairment |  | 587
Allowance for acquired impaired loans |  |
Consumer Real Estate Portfolio Segment [Member] | 1-4 Family, Junior and HELOCS [Member] |  |
Acquired impaired loans evaluated for impairment | 1,615 | 2,157
Allowance for acquired impaired loans |  |
Consumer Real Estate Portfolio Segment [Member] | 1-4 Family, Senior-consumer [Member] |  |
Acquired impaired loans evaluated for impairment | 11,148 | 13,174
Allowance for acquired impaired loans |  |
Consumer Real Estate Portfolio Segment [Member] | Consumer Loan [Member] |  |
Acquired impaired loans evaluated for impairment | 1,135 | 1,341
Allowance for acquired impaired loans |  |
Consumer Real Estate Portfolio Segment [Member] | Peoples Residential [Member] |  |
Acquired impaired loans evaluated for impairment |  | 700
Allowance for acquired impaired loans |  |

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