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Note 4 - Loans - Activity in Accretable Yield on PCI loans (Details) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Beginning balance |  | $ 22,616 | $ 17,229
Accretion |  | (1,952) | (3,495)
Reclassifications (to) from nonaccretable difference(1) | [1] | 0 | 1,214
Other changes, net |  | (14,464) | 308
Ending balance |  | 6,200 | 15,256
Peoples Bank of Virginia [Member] |  |  |
Beginning balance |  | 1,890 | 2,590
Accretion |  | 0 | (734)
Reclassifications (to) from nonaccretable difference(1) | [1] | 0 | 14
Other changes, net |  | (1,890) | 167
Ending balance |  | 0 | 2,037
Waccamaw Bank [Member] |  |  |
Beginning balance |  | 12,574 | 14,639
Accretion |  | 0 | (2,761)
Reclassifications (to) from nonaccretable difference(1) | [1] | 0 | 1,200
Other changes, net |  | (12,574) | 141
Ending balance |  | 0 | 13,219
Highlands [Member] |  |  |
Beginning balance |  | 8,152 | 0
Accretion |  | (1,952) | 0
Reclassifications (to) from nonaccretable difference(1) | [1] | 0 | 0
Other changes, net |  | 0 | 0
Ending balance |  | $ 6,200 | $ 0
[1] | Represents changes attributable to expected loss assumptions

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- Definition Amount of removals, extensions, and other events in the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References No definition available. + Details
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- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121585399&loc=d3e13503-111538 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 + Details
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- Definition Amount of accretion recognized for the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities, with evidence of deterioration of credit quality. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121585399&loc=d3e13503-111538 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 + Details
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- Definition Amount of reclassification (to) from nonaccretable difference (from) to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121585399&loc=d3e13503-111538 + Details
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