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Note 4 - Loans - PCI loans (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
PCI loans, unpaid principal balance	[1]	$ 41,878	$ 29,088
Receivables Acquired with Deteriorated Credit Quality [Member]
PCI loans, recorded investment		18,440	28,429
PCI loans, unpaid principal balance		40,458	55,548
Peoples Bank of Virginia [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
PCI loans, recorded investment		5,278	5,576
PCI loans, unpaid principal balance		8,111	9,397
Waccamaw Bank [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
PCI loans, recorded investment		12,176	21,758
PCI loans, unpaid principal balance		31,335	45,030
Other Receivables [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
PCI loans, recorded investment		986	1,095
PCI loans, unpaid principal balance		$ 1,012	$ 1,121
[1] Includes loans totaling $20.13 million as of December 31, 2017, and $16.89 million as of December 31, 2016, that do not meet the Company's evaluation threshold for individual impairment and are therefore collectively evaluated for impairment

X

- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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