Annual report pursuant to Section 13 and 15(d)

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

v2.4.1.9
LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Including Purchased Impaired Loans) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating $ 3,730,248us-gaap_LoansReceivableNet $ 2,160,973us-gaap_LoansReceivableNet
Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 337,498us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember 		213,675us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 844,276us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember 		500,764us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 1,480,290us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember 		755,905us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 203,798us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember 		185,072us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 395,615us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember 		237,365us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 389,921us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember 		215,702us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 78,850us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember 		52,490us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
4 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 2,662,344us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		1,340,160us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
4 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 289,064us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		148,251us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
4 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 620,587us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		324,394us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
4 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 1,041,515us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		453,279us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
4 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 128,281us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		98,927us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
4 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 311,900us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		168,564us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
4 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 230,084us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		123,585us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
4 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 40,913us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember 		23,160us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
5 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 89,056us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		95,557us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 11,932us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		20,370us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 15,003us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		10,017us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 22,358us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		21,953us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 16,803us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		14,132us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 9,750us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		12,302us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 9,392us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		8,254us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 3,818us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember 		8,529us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
6 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 63,672us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		109,392us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 10,906us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		13,772us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 7,688us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		10,926us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 28,388us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		46,084us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 4,783us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		16,439us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 6,680us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		11,522us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 4,383us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		8,752us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 844us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember 		1,897us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
7 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 109,268us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		80,274us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
7 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 3,084us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		6,883us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
7 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 15,209us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		5,795us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
7 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 31,766us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		9,887us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
7 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 42,769us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		46,926us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
7 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 7,647us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		6,650us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
7 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 7,089us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		3,822us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
7 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 1,704us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember 		311us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
8 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating    2,541us-gaap_LoansReceivableNet
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
8 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating      
8 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating      
8 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating      
8 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating      
8 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating      
8 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating    2,541us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
8 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating      
Purchased Impaired [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 94,235us-gaap_LoansReceivableNet
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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Purchased Impaired [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 3,782us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_PurchasedImpairedMember 		 
Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 31,167us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 28,869us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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Purchased Impaired [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 7,427us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_PurchasedImpairedMember
Purchased Impaired [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 16,879us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_PurchasedImpairedMember 		275us-gaap_LoansReceivableNet
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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Purchased Impaired [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 3,855us-gaap_LoansReceivableNet
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/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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Purchased Impaired [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 2,256us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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Purchased Impaired [Member] | 4 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 9,170us-gaap_LoansReceivableNet
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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/ us-gaap_InternalCreditAssessmentAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 4 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 1,525us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 2,837us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 4 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 1,564us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 4 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 2,807us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 4 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 437us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 4 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 5 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 5,922us-gaap_LoansReceivableNet
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
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/ us-gaap_InternalCreditAssessmentAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 5 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 5 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 3,546us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 5 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 934us-gaap_LoansReceivableNet
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 5 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 189us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 5 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 1,253us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 5 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 5 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 6 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 43,779us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 6 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 3,130us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 6 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 10,880us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 6 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 18,736us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 6 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 3,148us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 6 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 6,462us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 6 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 913us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 6 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 510us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 7 [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 34,878us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 7 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 194us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 7 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 15,216us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 7 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 6,362us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 7 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 2,526us-gaap_LoansReceivableNet
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Purchased Impaired [Member] | 7 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 6,357us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 7 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 2,477us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 7 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 1,746us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 486us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 8 [Member] | Commercial Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 458us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 8 [Member] | Raw Land and Lots [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 8 [Member] | Single Family Investment Real Estate [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating     
Purchased Impaired [Member] | 8 [Member] | Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating 28us-gaap_LoansReceivableNet
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/ us-gaap_InternalCreditAssessmentAxis
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Purchased Impaired [Member] | 8 [Member] | Other Commercial [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivables related risk rating