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Commitments and Contingencies - Off-balance Sheet Financial Instruments (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]    
Off-balance Sheet Risks, Amount, Liability $ 338us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability $ 319us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
Commitments to Extend Credit [Member]    
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]    
Off-balance Sheet Risks, Amount, Liability 538,488us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommitmentsToExtendCreditMember		  
Performance Letters Of Credit [Member]    
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]    
Off-balance Sheet Risks, Amount, Liability 19,240us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
/ us-gaap_FinancialInstrumentAxis
= uvsp_PerformanceLettersOfCreditMember		  
Standby Letters of Credit [Member]    
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]    
Off-balance Sheet Risks, Amount, Liability 27,526us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
/ us-gaap_FinancialInstrumentAxis
= us-gaap_StandbyLettersOfCreditMember		  
Other Letters Of Credit [Member]    
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]    
Off-balance Sheet Risks, Amount, Liability $ 101us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
/ us-gaap_FinancialInstrumentAxis
= uvsp_OtherLettersOfCreditMember