Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Notes Tables
Notes Details

Note J - Business Segments (Details Textual)

v3.21.2

Note J - Business Segments (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
Note J - Business Segments (Details Textual) $ in Thousands	Jul. 03, 2021 USD ($)	Jun. 28, 2020 USD ($)	Jul. 03, 2021 USD ($)	Jun. 28, 2020 USD ($)
Number of Operating Segments			2
Cost of Goods and Services Sold, Total	$ 88,427	$ 68,819	$ 246,677	$ 220,893
Delta Group [Member]
Cost of Goods and Services Sold, Total				1,900
Delta Group [Member] \| COVID-19 [Member]
Operating Expenses, Total		23,100		$ 25,000
Delta Group [Member] \| COVID-19 [Member] \| Curtailment of Manufacturing Operations [Member]
Operating Expenses, Total		9,800
Delta Group [Member] \| COVID-19 [Member] \| Incremental Costs to Right Size Production [Member]
Operating Expenses, Total		2,600
Delta Group [Member] \| COVID-19 [Member] \| Increased Accounts Receivable and Inventory Reserves Related to the Heightened Market Risks [Member]
Operating Expenses, Total		6,600
Delta Group [Member] \| COVID-19 [Member] \| Other Expenses [Member]
Operating Expenses, Total		4,100
Delta Group [Member] \| Other Operating Income (Expense) [Member] \| Two Hurricanes [Member]
Other Nonrecurring Expense			$ 1,300
Delta Group [Member] \| Other Operating Income (Expense) [Member] \| COVID-19 [Member]
Operating Expenses, Total		8,100
Delta Group [Member] \| Sales [Member] \| COVID-19 [Member]
Operating Expenses, Total		500
Delta Group [Member] \| Cost of Sales [Member] \| COVID-19 [Member]
Operating Expenses, Total		12,100
Delta Group [Member] \| Selling, General and Administrative Expenses [Member] \| COVID-19 [Member]
Operating Expenses, Total		$ 2,400

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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- Definition

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+ References

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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 20
-Section 50
-Paragraph 1
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