Annual report pursuant to Section 13 and 15(d)

PARENT COMPANY FINANCIAL INFORMATION (Financial Information for the Parent Company - Statements of Income) (Details)

v2.4.1.9
PARENT COMPANY FINANCIAL INFORMATION (Financial Information for the Parent Company - Statements of Income) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income:      
Interest and dividend income $ 274,945us-gaap_InterestAndDividendIncomeOperating $ 172,127us-gaap_InterestAndDividendIncomeOperating $ 181,863us-gaap_InterestAndDividendIncomeOperating
Gains on securities transactions, net 1,695us-gaap_GainLossOnSaleOfSecuritiesNet 21us-gaap_GainLossOnSaleOfSecuritiesNet 190us-gaap_GainLossOnSaleOfSecuritiesNet
Other operating income 3,681us-gaap_NoninterestIncomeOtherOperatingIncome 1,554us-gaap_NoninterestIncomeOtherOperatingIncome 1,028us-gaap_NoninterestIncomeOtherOperatingIncome
Expenses:      
Interest expense 19,927us-gaap_InterestExpense 20,501us-gaap_InterestExpense 27,508us-gaap_InterestExpense
Occupancy expenses 20,136us-gaap_OccupancyNet 11,543us-gaap_OccupancyNet 12,150us-gaap_OccupancyNet
Furniture and equipment expenses 11,872us-gaap_EquipmentExpense 6,884us-gaap_EquipmentExpense 7,251us-gaap_EquipmentExpense
Other expenses 9,564us-gaap_OtherNoninterestExpense 7,776us-gaap_OtherNoninterestExpense 6,074us-gaap_OtherNoninterestExpense
Net income 52,591us-gaap_NetIncomeLoss 34,496us-gaap_NetIncomeLoss 35,411us-gaap_NetIncomeLoss
Comprehensive income 67,036us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest 22,222us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest 35,845us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Parent Company [Member]      
Income:      
Interest and dividend income 5us-gaap_InterestAndDividendIncomeOperating
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
6us-gaap_InterestAndDividendIncomeOperating
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
8us-gaap_InterestAndDividendIncomeOperating
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Dividends received from subsidiaries 75,470ubsh_DividendsReceivedFromSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
31,323ubsh_DividendsReceivedFromSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
23,141ubsh_DividendsReceivedFromSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Equity in undistributed net income from subsidiaries (15,482)ubsh_EquityInUndistributedNetIncomeLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
7,685ubsh_EquityInUndistributedNetIncomeLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
15,158ubsh_EquityInUndistributedNetIncomeLossOfSubsidiaries
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Other operating income 1,393us-gaap_NoninterestIncomeOtherOperatingIncome
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,155us-gaap_NoninterestIncomeOtherOperatingIncome
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1,155us-gaap_NoninterestIncomeOtherOperatingIncome
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Total income 61,386ubsh_RevenueExcludingInterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
40,169ubsh_RevenueExcludingInterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
39,462ubsh_RevenueExcludingInterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Expenses:      
Interest expense 4,581us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3,060us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3,152us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Occupancy expenses 573us-gaap_OccupancyNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
583us-gaap_OccupancyNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
586us-gaap_OccupancyNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Furniture and equipment expenses 20us-gaap_EquipmentExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Other expenses 3,621us-gaap_OtherNoninterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,030us-gaap_OtherNoninterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
313us-gaap_OtherNoninterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Total expenses 8,795ubsh_InterestAndNonInterestExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
5,673ubsh_InterestAndNonInterestExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
4,051ubsh_InterestAndNonInterestExpenses
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net income 52,591us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
34,496us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
35,411us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Comprehensive income $ 67,036us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
$ 22,222us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
$ 35,845us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember