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Note 4 - Loans - Activity in Accretable Yield on PCI loans (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Balance		$ 14,464	$ 17,229
Accretion		(2,497)	(4,267)
Reclassifications (to) from nonaccretable difference	[1]		1,457
Other changes, net		(14,464)	45
Additions		8,152
Balance		5,655	14,464
Peoples Bank of Virginia [Member]
Balance		1,890	2,590
Accretion		0	(950)
Reclassifications (to) from nonaccretable difference	[1]		17
Other changes, net		(1,890)	233
Additions		0
Balance		0	1,890
Waccamaw Bank [Member]
Balance		12,574	14,639
Accretion		0	(3,317)
Reclassifications (to) from nonaccretable difference	[1]		1,440
Other changes, net		(12,574)	(188)
Additions		0
Balance		0	12,574
Highlands [Member]
Balance		0	0
Accretion		(2,497)	0
Reclassifications (to) from nonaccretable difference	[1]		0
Other changes, net		0	0
Additions		8,152
Balance		$ 5,655	$ 0
[1] Represents changes attributable to expected loss assumptions

X

- 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.

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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=123409700&loc=d3e13503-111538

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544

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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=123409700&loc=d3e13503-111538

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-Publisher FASB
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X

- 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=123409700&loc=d3e13503-111538

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-URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544

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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

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-URI http://asc.fasb.org/extlink&oid=123409700&loc=d3e13503-111538

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