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Significant Accounting Policies (Narrative) (Detail) - USD ($)	12 Months Ended
	Jul. 03, 2021	Nov. 24, 2020	Jun. 27, 2020	Dec. 28, 2016
Debt Disclosure [Line Items]
Long-term Debt	$ 100,411,000
Percentage Of Expected Over Aggregate Annual Insurance Claims	125.00%
Maximum Amount Of Income Tax Benefits Percentage Realized Upon Ultimate Settlement	50.00%
Revolving loan	$ 90,900,000		$ 60,100,000
Long-term Debt	100,411,000
Long-term Debt
Debt Disclosure [Line Items]
Long-term Debt	4,200,000		10,000,000
Long-term Debt	4,200,000		10,000,000
Equipment Term Loan
Debt Disclosure [Line Items]
Long-term Debt	4,200,000		900,000	$ 5
Long-term Debt	4,200,000		$ 900,000	$ 5
Equipment Term Loan Juarez
Debt Disclosure [Line Items]
Long-term Debt	5,800,000	$ 6,000,000
Long-term Debt	$ 5,800,000	$ 6,000,000

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Debt Disclosure [Line Items]

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Maximum Amount Of Income Tax Benefits Percentage Realized Upon Ultimate Settlement

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Percentage Of Expected Over Aggregate Annual Insurance Claims

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-SubTopic 210
-Section S99
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-Name Accounting Standards Codification
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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
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