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Note 16 - Stock Based Compensation (Detail) - Stock Options Subject to Service Conditions - Summary of Non-vested Shares (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	47 Months Ended
	Sep. 23, 2012	Sep. 23, 2012
Granted	138
Stock Options Subject to Service Conditions [Member] | The 2008 LTIP [Member]
Non-vested	312
Granted	138
Vested	(227)
Non-vested	223	223
Stock Options Subject to Service Conditions [Member]
Non-vested (in Dollars per share)	$ 5.19
Granted	138	832
Granted (in Dollars per share)	$ 7.28
Vested (in Dollars per share)	$ 4.19
Non-vested (in Dollars per share)	$ 7.50	$ 7.50

X

- Definition

The number of shares under options that vested during the reporting period.

+ References

No definition available.

+ Details

Name:	ufi_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriod
Namespace Prefix:	ufi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average grant-date fair value of options vested during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

No definition available.

+ Details

Name:	ufi_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	ufi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average grant-date fair value of un-vested options that are outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	ufi_ShareBasedCompensationArrangementByShareBasedPaymentAwardUnvestedOptionsOutstandingWeightedAverageGrantDateFairValue
Namespace Prefix:	ufi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of un-vested shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	ufi_ShareBasedCompensationArrangementByShareBasedPaymentUnvestedAwardOptionsOutstandingNumber
Namespace Prefix:	ufi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration