Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	Apr. 10, 2019	Sep. 30, 2004
Commitments And Contingencies Disclosure [Abstract]
The term of a former ground lease		99 years
Net monitoring and reporting costs received	$ 180

The term of a former ground lease with E.I. DuPont de Nemours.

No definition available.

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