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Mortgage Servicing Rights - Activity in Valuation Allowance for Mortgage Servicing Rights (Details) (Mortgage Servicing Rights [Member], USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mortgage Servicing Rights [Member]
    
Movement in Valuation Allowances and Reserves [Roll Forward]    
Valuation allowance, beginning of period $ 0us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember		 $ (250)us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember
Additions 0uvsp_ValuationAllowancesAndReservesAdditions
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember		 0uvsp_ValuationAllowancesAndReservesAdditions
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember
Reductions 0us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember		 7us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember
Direct write-downs 0uvsp_DirectWriteDowns
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember		 0uvsp_DirectWriteDowns
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember
Valuation allowance, end of period $ 0us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember		 $ (243)us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= uvsp_MortgageServicingRightsMember