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Revenue Recognition - Schedule of Estimated Amount of Deferred Revenue and Customer Advances (Detail) - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 31, 2018
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 197,401	$ 164,965
Deferred revenue and customer advances expected to be recognized	235,421
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-12-30
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 197,401
Deferred revenue and customer advances recognition period	0 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-12-29
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 21,962
Deferred revenue and customer advances recognition period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-12-27
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 16,058
Deferred revenue and customer advances recognition period	2 years

X

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130556-203045

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- Definition

Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
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Revenue recognition.

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- Definition

Revenue remaining performance obligation current and noncurrent.

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