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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
 12 Months Ended 3 Months Ended
Dec. 31, 2014
item
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
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Operating Segments        
Number of operating segments 3us-gaap_NumberOfOperatingSegments      
Bank        
Business and Organization        
Number of full-service banking branches operated 9mvbf_NumberOfFullServiceBankingBranchesOperated
/ dei_LegalEntityAxis
= mvbf_MVBBankIncMember		      
Bank | LSP        
Business and Organization        
Percentage of interest acquired     50.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= mvbf_LenderServiceProviderLLCMember
/ dei_LegalEntityAxis
= mvbf_MVBBankIncMember		  
MVB Mortgage        
Business and Organization        
Number of mortgage only offices       11mvbf_NumberOfMortgageOnlyOffices
/ dei_LegalEntityAxis
= mvbf_MVBMortgageMember
LSP        
Business and Organization        
Percentage of interest after reduction through a sale of a partial interest   25.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
/ dei_LegalEntityAxis
= mvbf_LenderServiceProviderLLCMember