Name:	uba_ProFormaEarningsApplicableToCommonAndClassCommonStockholders
Namespace Prefix:	uba_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Earnings (from continuing operations) of the combined entity as though the business combinations that occurred during the current year had occurred as of the beginning of the reporting period.

No definition available.

Name:	uba_ProFormaIncomeFromContinuingOperations
Namespace Prefix:	uba_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

Pro forma revenues of the combined entity as though the business combinations that occurred during the current year had occurred as of the beginning of the reporting period.

No definition available.

Name:	uba_ProFormaRevenues
Namespace Prefix:	uba_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.