Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Narrative) (Details)

v2.4.1.9
COMMITMENTS AND CONTINGENCIES (Narrative) (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Loans available for sale in which the related rate lock commitment expired $ 2,700,000ubsh_AgedLoansHeldForSaleMortgages $ 2,600,000ubsh_AgedLoansHeldForSaleMortgages
Valuation reserve on aged loans held for sale in which the related rate lock commitment expired 102,000ubsh_ValuationReserveOnAgedLoansHeldForSale 104,000ubsh_ValuationReserveOnAgedLoansHeldForSale
Daily average required reserves 47,100,000ubsh_DailyAverageRequiredReservesAgainstDeposits 48,700,000ubsh_DailyAverageRequiredReservesAgainstDeposits
Deposits with other financial institutions 18,400,000ubsh_DepositsWithOtherFinancialInstitutions  
Uninsured deposits with other financial institutions 8,300,000us-gaap_CashUninsuredAmount  
Indemnification reserves 687,000ubsh_IndemnificationReservesOnLoansHeldForSale 662,000ubsh_IndemnificationReservesOnLoansHeldForSale
Trust Swaps [Member]    
Deposits with other financial institutions serves as collateral 5,700,000ubsh_DepositsWithOtherFinancialInstitutionsServesAsCollateralForCashFlowHedge
/ us-gaap_DerivativeByNatureAxis
= ubsh_TrustSwapsMember 		 
Interest Rate Swaps [Member]    
Deposits with other financial institutions serves as collateral $ 3,500,000ubsh_DepositsWithOtherFinancialInstitutionsServesAsCollateralForCashFlowHedge
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember