Note 9 - Other Non-current Assets (Details) - USD ($) $ in Thousands	Sep. 27, 2015	Jun. 28, 2015
Disclosure Text Block Supplement [Abstract]
Accumulated Depreciation, Biomass Foundation and Feedstock	$ 75	$ 55

Amount of accumulated depreciation for biomass foundation and feedstock.

No definition available.

Name:	ufi_AccumulatedDepreciationBiomassFoundationAndFeedstock
Namespace Prefix:	ufi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant