ORGANIZATION, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Business (Details) ft² in Millions	Oct. 31, 2022 ft² Property
Business [Abstract]
Number of properties the Company owned or had equity interest in \| Property	77
Gross leasable area of properties the Company owned or had equity interest in \| ft²	5.3

The Gross Leasable Area of the properties the Company owned or had equity interest in.

No definition available.

Name:	uba_GrossLeasableAreaOfPropertiesTheCompanyOwnedOrHadEquityInterestIn
Namespace Prefix:	uba_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant