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Credit Facility (Narrative) (Details) - USD ($)		12 Months Ended
	Apr. 03, 2020	Jan. 01, 2021	Dec. 27, 2019
Line of Credit Facility [Line Items]
Incremental debt issuance costs		$ 21,000
Revolving line of credit facility [Member]
Line of Credit Facility [Line Items]
Borrowing capacity under credit facility	$ 45,000,000.0	$ 45,000,000.0
Maturity date	Nov. 30, 2022	May 09, 2021
Increase in interest payable	0.50%
Pledge of capital stock to U.S. subsidiaries		100.00%
Pledge of capital stock to direct foreign subsidiaries		66.00%
Commitment fees percentage		0.125%
Incremental debt issuance costs		$ 21,000	$ 0
Debt balance		0	0
Amount drawn on loan		$ 100,000	1,000,000.0
Outstanding balance			0
Payment of principal			7,500,000
Debt issuance costs			$ 100,000
Revolving line of credit facility [Member] | LIBOR Floor Rate [Member]
Line of Credit Facility [Line Items]
Margin percentage base rate	0.75%
Revolving line of credit facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Margin percentage base rate		1.50%
Revolving line of credit facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Margin percentage base rate		0.75%

X

- Definition

Pledge of capital stock to direct foreign subsidiaries.

+ References

No definition available.

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- Definition

Pledge of capital stock to U.S. subsidiaries.

+ References

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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 210.5-02.17)
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

Amount of the total principal payments made during the annual reporting period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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-Publisher FASB
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-Topic 210
-SubTopic 10
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- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

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