Annual report pursuant to Section 13 and 15(d)

SEGMENT REPORTING DISCLOSURES (Narrative) (Details)

v2.4.1.9
SEGMENT REPORTING DISCLOSURES (Narrative) (Details)
12 Months Ended
Dec. 31, 2014
entity
segment
item
Segment Reporting Information [Line Items]  
Number of reportable segments 2us-gaap_NumberOfReportableSegments
Number of retail locations 131us-gaap_NumberOfStores
Number of subsidiary bank 1ubsh_NumberOfSubsidiaryIncludedProvidingServicesToRetailAndCommercialCustomers
Mortgage banking segment interest - floor 0.00%ubsh_DebtFloorInterestRate
Warehouse Line of Credit [Member] | LIBOR [Member]  
Segment Reporting Information [Line Items]  
Spread to 3-Month LIBOR 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= ubsh_WarehouseLineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember