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Related Party Transactions - Summary of Transactions with Related Parties (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Standby and Commercial Letters of Credits [Member]  
Related Party Transaction [Line Items]  
Amount of transactions with related parties $ 223us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= uvsp_StandbyAndCommercialLettersOfCreditMember
Commitments to Extend Credit [Member]  
Related Party Transaction [Line Items]  
Amount of transactions with related parties 16,453us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommitmentsToExtendCreditMember
Deposits Received [Member]  
Related Party Transaction [Line Items]  
Amount of transactions with related parties $ 10,342us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_FinancialInstrumentAxis
= us-gaap_DepositsMember