LOANS AND ALLOWANCE FOR LOAN LOSSES - Internal Risk Rating (Details) (USD $)	12 Months Ended
Dec. 31, 2014 item
Average recorded investment in impaired loans and related interest income recognized
Number of points in internal risk rating system	9
Number of categories in internal risk rating system considered as not criticized	6
Minimum threshold for performing annual review of commercial relationship	$ 1,000

Represents the number of points in internal risk rating system used by bank management to monitor the credit quality of the overall loan portfolio.

No definition available.

Name:	mvbf_LoanPortfolioInternalRiskRatingSystemPointsNumber
Namespace Prefix:	mvbf_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration