Annual report pursuant to Section 13 and 15(d)

DEPOSITS (Narrative) (Details)

v2.4.1.9
DEPOSITS (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Cash and Cash Equivalents [Line Items]    
Time deposits held in Certificates of Deposit 1,297,317,000us-gaap_TimeDeposits  
Deposit overdrafts as other consumer loans 2,100,000ubsh_DepositOverdraft 1,800,000ubsh_DepositOverdraft
CDARS [Member]    
Cash and Cash Equivalents [Line Items]    
Time deposits held in Certificates of Deposit 7,900,000us-gaap_TimeDeposits
/ us-gaap_CashAndCashEquivalentsAxis
= ubsh_CdarsMember
$ 32,000,000us-gaap_TimeDeposits
/ us-gaap_CashAndCashEquivalentsAxis
= ubsh_CdarsMember
Maximum [Member] | CDARS [Member]    
Cash and Cash Equivalents [Line Items]    
Maturity of deposits held in Certificate of Deposits 1 year