XML 17 R46.htm IDEA: XBRL DOCUMENT v2.4.0.8

Other Real Estate Owned - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2014
Real Estate [Abstract]
Maximum period for recording the adjustments to loan losses	60 days

X

- Definition

Maximum period for recording the adjustments to loan losses.

+ References

No definition available.

+ Details

Name:	usbi_MaximumPeriodForRecordingAdjustmentsToLoanLosses
Namespace Prefix:	usbi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RealEstateAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration