Revenue Recognition - Additional Information (Details) $ in Thousands	6 Months Ended
Dec. 30, 2018 USD ($)
Revenue From Contract With Customer [Abstract]
Change in contract assets balance	$ 10,537

Change in contract assets balance upon recognition of satisfied performance obligations in connection with adoption of new revenue recognition guidance.

No definition available.

Name:	ufi_ChangeInContractAssetsBalanceUponRecognitionOfSatisfiedPerformanceObligationsInConnectionWithAdoptionOfNewRevenueRecognitionGuidance
Namespace Prefix:	ufi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration