Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFITS AND SHARE BASED COMPENSATION (Summary of Shares Available in Each Plan) (Details)

v2.4.1.9
EMPLOYEE BENEFITS AND SHARE BASED COMPENSATION (Summary of Shares Available in Each Plan) (Details) (2011 Plan [Member])
12 Months Ended
Dec. 31, 2014
2011 Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Beginning Authorization 1,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= ubsh_TwoThousandAndElevenPlanMember
Granted (519,227)us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross
/ us-gaap_PlanNameAxis
= ubsh_TwoThousandAndElevenPlanMember
Remaining available for grant 480,773us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= ubsh_TwoThousandAndElevenPlanMember