General - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017
Organization Presentation And General [Line Items]
Business combination effective date	Apr. 01, 2017
Virginia Commonwealth Bank
Organization Presentation And General [Line Items]
Percent of ownership	100.00%
VCB Financial Group, Inc.
Organization Presentation And General [Line Items]
Percent of ownership	100.00%
Steptoes Holdings
Organization Presentation And General [Line Items]
Percent of ownership	100.00%