Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVES (Summary of the Derivatives) (Details)

v2.4.1.9
DERIVATIVES (Summary of the Derivatives) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
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Dec. 31, 2014
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Trust Swaps [Member]    
Summary of the derivative designated as a cash flow hedge    
Notional Amount $ 68,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= ubsh_TrustSwapsMember
 
Cash Flow Hedging [Member]    
Summary of the derivative designated as a cash flow hedge    
Notional Amount 263,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
 
Prime Loan Swaps [Member]    
Summary of the derivative designated as a cash flow hedge    
Notional Amount 55,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= ubsh_PrimeLoanSwapsMember
 
Life (Years) 6 years  
Receive fixed - pay floating interest rate swaps [Member] | Cash Flow Hedging [Member]    
Summary of the derivative designated as a cash flow hedge    
Positions 4us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
4us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Notional Amount 55,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
55,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Asset 1,185us-gaap_DerivativeAssets
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
580us-gaap_DerivativeAssets
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Receive Rate 4.93%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
4.93%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Pay Rate 3.55%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
3.55%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Life (Years) 4 years 5 months 19 days 4 years 8 months 19 days
Receive fixed - pay floating interest rate swaps [Member] | Interest Rate Swaps [Member]    
Summary of the derivative designated as a cash flow hedge    
Positions 33us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
30us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Notional Amount 134,496invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
122,793invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Asset 4,684us-gaap_DerivativeAssets
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
2,681us-gaap_DerivativeAssets
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Receive Rate 4.28%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
4.29%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Pay Rate 2.47%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
2.50%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_ReceiveFixedPayFloatingInterestRateSwapsMember
Life (Years) 7 years 1 month 21 days 7 years 1 month 21 days
Pay fixed - receive floating interest rate swaps [Member] | Cash Flow Hedging [Member]    
Summary of the derivative designated as a cash flow hedge    
Positions 7us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
7us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Notional Amount 208,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
208,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Asset      
Liabilities 10,854us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
8,433us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Receive Rate 0.27%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
0.26%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Pay Rate 2.77%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
2.77%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Life (Years) 1 year 10 months 17 days 2 years 1 month 13 days
Pay fixed - receive floating interest rate swaps [Member] | Interest Rate Swaps [Member]    
Summary of the derivative designated as a cash flow hedge    
Positions 33us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
30us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Notional Amount 134,496invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
122,793invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Liabilities $ 4,684us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
$ 2,681us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Receive Rate 2.47%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
2.50%ubsh_DerivativeInterestReceiveRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Pay Rate 4.28%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
4.29%ubsh_DerivativeInterestPayRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ubsh_PayFixedReceiveFloatingInterestRateSwapsMember
Life (Years) 7 years 1 month 21 days 7 years 1 month 21 days
Minimum [Member] | Trust Swaps [Member]    
Summary of the derivative designated as a cash flow hedge    
Life (Years) 3 years  
Maximum [Member] | Trust Swaps [Member]    
Summary of the derivative designated as a cash flow hedge    
Life (Years) 6 years