Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Excluding Purchased Impaired Loans) (Details)

v2.4.1.9
LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Excluding Purchased Impaired Loans) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating $ 5,387,755us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome $ 5,345,996us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome $ 5,274,198us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 358,436us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember 		341,280us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember 		 
Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 898,222us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember 		875,443us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember 		 
Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 1,518,590us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember 		1,509,159us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember 		 
Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 197,759us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember 		211,225us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember 		 
Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 416,984us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember 		412,494us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember 		 
Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 426,490us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember 		393,776us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember 		 
Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 80,416us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember 		81,106us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember 		 
Excluding Purchased Impaired [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 3,815,742us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		3,730,248us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 355,346us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		337,498us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 867,218us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		844,276us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 1,499,015us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		1,480,290us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 191,704us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		203,798us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 400,685us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		395,615us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 423,152us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		389,921us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 78,622us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		78,850us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember 		 
Excluding Purchased Impaired [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 854,880us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		805,908us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		 
Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 32,325us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		22,512us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		 
Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 185,029us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		185,789us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		 
Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 368,352us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		356,263us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		 
Excluding Purchased Impaired [Member] | 1-3 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 9,550us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		11,162us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ExcludingPurchasedImpairedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		 
Excluding Purchased Impaired [Member] | 1-3 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 62,254us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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/ us-gaap_InternalCreditAssessmentAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 165,924us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		138,973us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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/ us-gaap_InternalCreditAssessmentAxis
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Excluding Purchased Impaired [Member] | 1-3 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 31,446us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingOneToThreeMember 		 
Excluding Purchased Impaired [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 2,719,393us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		 
Excluding Purchased Impaired [Member] | 4 [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 295,831us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Excluding Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 644,950us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Excluding Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 1,059,097us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Excluding Purchased Impaired [Member] | 4 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 126,001us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Excluding Purchased Impaired [Member] | 4 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 316,576us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Excluding Purchased Impaired [Member] | 4 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 236,174us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Excluding Purchased Impaired [Member] | 4 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 40,764us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Excluding Purchased Impaired [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 80,919us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
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Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 11us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating        
Excluding Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating        
Excluding Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating        
Excluding Purchased Impaired [Member] | 8 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating        
Excluding Purchased Impaired [Member] | 8 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating        
Excluding Purchased Impaired [Member] | 8 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating 11us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
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Financing Receivable, Recorded Investment [Line Items]      
Loans receivables related risk rating