Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Schedule of Financial Assets Measured at Fair Value on Nonrecurring Basis) (Details)

v2.4.1.9
FAIR VALUE MEASUREMENTS (Schedule of Financial Assets Measured at Fair Value on Nonrecurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale $ 46,048us-gaap_LoansHeldForSaleFairValueDisclosure $ 42,519us-gaap_LoansHeldForSaleFairValueDisclosure
Other real estate owned 25,434us-gaap_OtherRealEstateAndForeclosedAssets 28,118us-gaap_OtherRealEstateAndForeclosedAssets
Fair Value, Measurements, Nonrecurring [Member]    
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale 46,048us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
42,519us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
Impaired loans 12,621ubsh_FairValueOfImpairedLoans
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
15,797ubsh_FairValueOfImpairedLoans
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
Other real estate owned 25,434us-gaap_OtherRealEstateAndForeclosedAssets
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
28,118us-gaap_OtherRealEstateAndForeclosedAssets
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]    
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale     
Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]    
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale      
Impaired loans      
Other real estate owned      
Significant Other Observable Inputs Level 2 [Member]    
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale 46,048us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
42,519us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]    
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale 46,048us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
42,519us-gaap_LoansHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
Impaired loans      
Other real estate owned      
Significant Unobservable Inputs Level 3 [Member]    
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale     
Significant Unobservable Inputs Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]    
Schedule of financial assets measured at fair value on nonrecurring basis    
Loans held for sale      
Impaired loans 12,621ubsh_FairValueOfImpairedLoans
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
15,797ubsh_FairValueOfImpairedLoans
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
Other real estate owned $ 25,434us-gaap_OtherRealEstateAndForeclosedAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
$ 28,118us-gaap_OtherRealEstateAndForeclosedAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember