Quarterly report pursuant to Section 13 or 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
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality $ 91,346us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality $ 105,788us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality $ 138,431us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 3,090us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
3,782us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
 
Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 31,004us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
31,167us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
 
Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 19,575us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
28,869us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
 
Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 6,055us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
7,427us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
 
Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 16,299us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
16,879us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
 
Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 3,338us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
3,855us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
 
Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 1,794us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
2,256us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
 
Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 81,155us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
94,235us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
120,291us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
4 [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality        
4 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 2,758us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
1,525us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 3,855us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
2,837us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
 
4 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 1,580us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
1,564us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 3,783us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
2,807us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
 
4 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 492us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
437us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
 
4 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 69us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
    
4 [Member] | Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 12,537us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
9,170us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFourMember
 
5 [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality        
5 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 3,647us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
3,546us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 3,597us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
934us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
 
5 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 585us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
189us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 2,083us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
1,253us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
 
5 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 13us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
    
5 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality        
5 [Member] | Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 9,925us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
5,922us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingFiveMember
 
6 [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 2,491us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
3,130us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 9,042us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
10,880us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 9,171us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
18,736us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
 
6 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 2,595us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
3,148us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 4,661us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
6,462us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
 
6 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 436us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
913us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
 
6 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 530us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
510us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
 
6 [Member] | Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 28,926us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
43,779us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSixMember
 
7 [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 146us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
194us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 15,557us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
15,216us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 2,952us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
6,362us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
 
7 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 1,295us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
2,526us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ 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 acquired with a deterioration of credit quality 5,772us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
6,357us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
 
7 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 2,371us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
2,477us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
 
7 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 1,195us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
1,746us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
 
7 [Member] | Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 29,288us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
34,878us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingSevenMember
 
8 [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 453us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
458us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
 
8 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality       
8 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality       
8 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality       
8 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality       
8 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 26us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
28us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
 
8 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality       
8 [Member] | Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 479us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
486us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= ubsh_LoansReceivablesRelatedRiskRatingEightMember
 
Receivables Acquired with Deteriorated Credit Quality [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 91,346us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
105,788us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
 
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Construction [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 3,090us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
3,782us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialConstructionMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
 
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 31,004us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
31,167us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
 
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 19,575us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
28,869us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialRealEstateNonOwnerOccupiedMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
 
Receivables Acquired with Deteriorated Credit Quality [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 6,055us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
7,427us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_RawLandAndLotsMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
 
Receivables Acquired with Deteriorated Credit Quality [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 16,299us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
16,879us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_SingleFamilyInvestmentRealEstateMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
 
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality 3,338us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
3,855us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_CommercialAndIndustrialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
 
Receivables Acquired with Deteriorated Credit Quality [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans acquired with a deterioration of credit quality $ 1,794us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember
$ 2,256us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= ubsh_OtherCommercialMember
/ ubsh_FinancingReceivablesPurchasedImpairedAxis
= ubsh_ReceivablesAcquiredWithDeterioratedCreditQualityMember