Recent Accounting Pronouncements - Additional Information (Details) $ in Thousands	Jun. 25, 2017 USD ($)
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Estimated future minimum lease payments under non-cancelable operating leases	$ 6,400

Operating leases, estimated future minimum payments due.

No definition available.

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