Commitments and Contingencies - Additional Information (Details)		3 Months Ended
Sep. 30, 2004	Sep. 24, 2017
Commitments And Contingencies Disclosure [Abstract]
The term of a former ground lease	99 years
Number of years of monitoring and reporting costs of an individual site		7 years

Monitoring and reporting costs of an individual site period.

No definition available.

Name:	ufi_MonitoringAndReportingCostsOfAnIndividualSitePeriod
Namespace Prefix:	ufi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration