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Subsequent Event (Details) (Bank, Subsequent event [Member], Susquehanna Bank [Member], USD $)
In Millions, unless otherwise specified
May 01, 2015
item
Bank | Subsequent event [Member] | Susquehanna Bank [Member]
  
Subsequent Event [Line Items]  
Number of bank branches, acquired 2mvbf_NumberOfBankBranchesAcquired
/ us-gaap_BusinessAcquisitionAxis
= mvbf_SusquehannaBankMember
/ dei_LegalEntityAxis
= mvbf_MVBBankIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Deposits acquired $ 69mvbf_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits
/ us-gaap_BusinessAcquisitionAxis
= mvbf_SusquehannaBankMember
/ dei_LegalEntityAxis
= mvbf_MVBBankIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Loans acquired $ 17us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
/ us-gaap_BusinessAcquisitionAxis
= mvbf_SusquehannaBankMember
/ dei_LegalEntityAxis
= mvbf_MVBBankIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember