Inventories - Additional Information (Details) - USD ($) $ in Thousands	Jun. 24, 2018	Jun. 25, 2017
Inventory Disclosure [Abstract]
Foreign inventory valued at average cost	$ 39,870	$ 33,231

Net amount of foreign subsidiary inventories valued under the average cost method and limited categories of supplies.

No definition available.

Name:	ufi_ForeignInventoryValuedAtAverageCost
Namespace Prefix:	ufi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant