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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Jun. 28, 2020	Mar. 27, 2020	Dec. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018
Statement of Stockholders' Equity [Abstract]
Change in pension plans, tax benefit (expense)	$ 60	$ 20	$ 21	$ (7)	$ 33	$ 33

X

- Definition

Amount, before reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (i-k)
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e640-108580

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Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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