Document and Entity Information	6 Months Ended
	Jun. 30, 2020 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-32590
Entity Registrant Name	COMMUNITY BANKERS TRUST CORP
Entity Incorporation, State or Country Code	VA
Entity Tax Identification Number	20-2652949
Entity Address, Address Line One	9954 Mayland Drive, Suite 2100
Entity Address, State or Province	VA
Entity Address, City or Town	Richmond
Entity Address, Postal Zip Code	23233
City Area Code	804
Local Phone Number	934-9999
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	ESXB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	22,311,357
Entity Central Index Key	0001323648
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false