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Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 28, 2020	Dec. 28, 2020	Dec. 30, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Balance at beginning of year		$ 37,465	$ 30,284	$ 31,276
Additions related to acquisition				903
Additions based on tax positions related to the current year		839	3,553	856
Additions for tax positions of prior years		202	4,952	117
Reductions for tax positions of prior years	$ (27,283)	(27,283)	(103)	(2,140)
Lapse of statute of limitations		(3,819)	(1,221)	(728)
Balance at end of year	$ 7,404	$ 7,404	$ 37,465	$ 30,284

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 740
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-Section 50
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of increase in unrecognized tax benefits resulting from acquisitions.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Section 50
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