Quarterly report pursuant to Section 13 or 15(d)

ACCOUNTING POLICIES (Narrative) (Details)

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ACCOUNTING POLICIES (Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
ACCOUNTING POLICIES [Abstract]    
Investments, recognized amortization $ 175,000ubsh_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization  
Investments, tax credits 257,000ubsh_AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount  
Carrying value of investments in qualified housing project investments 9,800,000ubsh_AmortizationMethodQualifiedAffordableHousingProjectInvestments 10,400,000ubsh_AmortizationMethodQualifiedAffordableHousingProjectInvestments
Unfunded commitment liability $ 5,100,000ubsh_QualifiedAffordableHousingProjectInvestmentsCommitments