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Note R - Leases (Details Textual) $ in Millions	12 Months Ended
	Sep. 26, 2020 USD ($)
Operating Lease, Weighted Average Discount Rate, Percent	3.30%
Finance Lease, Weighted Average Discount Rate, Percent	3.10%
Operating Lease, Impairment Loss	$ 6.9
Operating Lease, Weighted Average Remaining Lease Term (Year)	7 years 1 month 6 days
Finance Lease, Weighted Average Remaining Lease Term (Year)	3 years 6 months
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)	1 month
Lessee, Finance Lease, Remaining Lease Term (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)	15 years
Lessee, Finance Lease, Remaining Lease Term (Year)	5 years

X

- Definition

Weighted average discount rate for finance lease calculated at point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(4)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

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-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971

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X

- Definition

Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(3)
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Remaining lease term of finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

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Amount of loss from impairment of right-of-use asset from operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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