Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFITS AND SHARE BASED COMPENSATION (Estimated Unamortized Compensation Expense Recognized in Future) (Details)

v2.4.1.9
EMPLOYEE BENEFITS AND SHARE BASED COMPENSATION (Estimated Unamortized Compensation Expense Recognized in Future) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Estimated unamortized compensation expense recognized in future  
For year ending December 31, 2015 $ 1,613ubsh_EstimatedUnamortizedCompensationExpenseYearOne
For year ending December 31, 2016 1,269ubsh_EstimatedUnamortizedCompensationExpenseYearTwo
For year ending December 31, 2017 465ubsh_EstimatedUnamortizedCompensationExpenseYearThree
For year ending December 31, 2018 55ubsh_EstimatedUnamortizedCompensationExpenseYearFour
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total 3,402us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Stock Options [Member]  
Estimated unamortized compensation expense recognized in future  
For year ending December 31, 2015 233ubsh_EstimatedUnamortizedCompensationExpenseYearOne
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
For year ending December 31, 2016 130ubsh_EstimatedUnamortizedCompensationExpenseYearTwo
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
For year ending December 31, 2017 15ubsh_EstimatedUnamortizedCompensationExpenseYearThree
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total 378us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Restricted Stock [Member]  
Estimated unamortized compensation expense recognized in future  
For year ending December 31, 2015 1,380ubsh_EstimatedUnamortizedCompensationExpenseYearOne
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
For year ending December 31, 2016 1,139ubsh_EstimatedUnamortizedCompensationExpenseYearTwo
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
For year ending December 31, 2017 450ubsh_EstimatedUnamortizedCompensationExpenseYearThree
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
For year ending December 31, 2018 55ubsh_EstimatedUnamortizedCompensationExpenseYearFour
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total $ 3,024us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember