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Loans and Asset Quality Information (Schedule of Applied Cost Recovery Method of Purchased Impaired Loans) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Purchased Credit Impaired Loans (substantially all of which are covered loans) |  |
Balance, beginning, carrying value | $ 23,165 | $ 514
Change due to payments received and accretion | (2,994) | (6,016)
Change due to loan charge-offs | (10) | (12)
Transfers to foreclosed real estate |  | (69)
Other | 28 | (392)
Balance, ending, carrying value | 20,189 | 23,165
Carolina Bank [Member] |  |
Purchased Credit Impaired Loans (substantially all of which are covered loans) |  |
Additions due to acquisition |  | 19,254
Asheville Savings Bank [Member] |  |
Purchased Credit Impaired Loans (substantially all of which are covered loans) |  |
Additions due to acquisition |  | 9,886
Accretable Yield for PCI loans [Member] |  |
Purchased Credit Impaired Loans (substantially all of which are covered loans) |  |
Balance, beginning, carrying value | 4,688 |
Accretion | (1,169) | (1,846)
Reclassification from (to) nonaccretable difference | 712 | 423
Other | 831 | 690
Balance, ending, carrying value | 5,062 | 4,688
Accretable Yield for PCI loans [Member] | Carolina Bank [Member] |  |
Purchased Credit Impaired Loans (substantially all of which are covered loans) |  |
Additions due to acquisition |  | 3,617
Accretable Yield for PCI loans [Member] | Asheville Savings Bank [Member] |  |
Purchased Credit Impaired Loans (substantially all of which are covered loans) |  |
Additions due to acquisition |  | $ 1,804

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- Definition Amount of additions 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 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&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=82894903&loc=d3e15032-111544 + Details
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