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Loans and Asset Quality Information (Schedule of Applied Cost Recovery Method of Purchased Impaired Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Purchased Credit Impaired Loans
Balance, beginning, carrying value	$ 23,165	$ 514
Change due to payments received and accretion	(5,799)	(6,016)
Change due to loan charge-offs	(10)	(12)
Transfers to foreclosed real estate	(4)	(69)
Other	41	(392)
Balance, ending, carrying value	17,393	23,165
Carolina Bank [Member]
Purchased Credit Impaired Loans
Additions due to acquisition		19,254
Asheville Savings Bank [Member]
Purchased Credit Impaired Loans
Additions due to acquisition		9,886
Accretable Yield for PCI loans [Member]
Purchased Credit Impaired Loans
Balance, beginning, carrying value	4,688
Accretion	(2,050)	(1,846)
Reclassification from (to) nonaccretable difference	849	423
Other	1,263	690
Balance, ending, carrying value	4,750	4,688
Accretable Yield for PCI loans [Member] | Carolina Bank [Member]
Purchased Credit Impaired Loans
Additions due to acquisition		3,617
Accretable Yield for PCI loans [Member] | Asheville Savings Bank [Member]
Purchased Credit Impaired Loans
Additions due to acquisition		$ 1,804

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Other activity in amounts not disclosed elsewhere in taxonomy.

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The value of loans transfered to foreclosed assets.

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The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as 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.

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Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as 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.

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