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Note E - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Land [Member]
Property, plant and equipment, at cost	$ 2,512	$ 2,496
Building [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life	15 years
Building [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life	39 years 182 days
Building [Member]
Property, plant and equipment, at cost	$ 26,741	26,741
Machinery and Equipment [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life	5 years
Machinery and Equipment [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life	20 years
Machinery and Equipment [Member]
Property, plant and equipment, at cost	$ 227,614	210,728
Equipment [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life	5 years
Equipment [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life	7 years
Equipment [Member]
Property, plant and equipment, at cost	$ 278,299	266,047
Transportation Equipment [Member]
Property, plant and equipment, at cost	$ 7,637	6,866
Property, plant and equipment, estimated useful life	5 years
Office Equipment [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life	3 years
Office Equipment [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life	5 years
Office Equipment [Member]
Property, plant and equipment, at cost	$ 22,136	20,586
Improvements [Member] | Minimum [Member]
Property, plant and equipment, estimated useful life	5 years
Improvements [Member] | Maximum [Member]
Property, plant and equipment, estimated useful life	20 years
Improvements [Member]
Property, plant and equipment, at cost	$ 34,750	28,725
Construction in Progress [Member]
Property, plant and equipment, at cost	5,356	9,486
Property, plant and equipment, at cost	$ 605,045	$ 571,675

X

- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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