Cash, Cash Equivalents, and Investments - Summary of Available-for-Sale Investments (Detail) $ in Thousands	Mar. 29, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 606,390
Gross unrealized gains	3,736
Gross unrealized losses	(8,048)
Fair value	602,078
Agency Bonds
Debt Securities, Available-for-sale [Line Items]
Gross unrealized losses	(15)
Agency Bonds \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	5,930
Gross unrealized gains	0
Gross unrealized losses	(15)
Fair value	5,915
Treasury Bills \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	19,328
Gross unrealized gains	435
Gross unrealized losses	0
Fair value	19,763
Treasury Bills \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	187,794
Gross unrealized gains	2,899
Gross unrealized losses	0
Fair value	190,693
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Gross unrealized losses	(6,381)
Corporate Bonds \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	55,404
Gross unrealized gains	20
Gross unrealized losses	(487)
Fair value	54,937
Corporate Bonds \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	183,646
Gross unrealized gains	117
Gross unrealized losses	(5,894)
Fair value	177,869
Asset-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Gross unrealized losses	(1,644)
Asset-Backed Securities \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	70,510
Gross unrealized gains	25
Gross unrealized losses	(579)
Fair value	69,956
Asset-Backed Securities \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	52,405
Gross unrealized gains	55
Gross unrealized losses	(1,065)
Fair value	51,395
Sovereign Bonds
Debt Securities, Available-for-sale [Line Items]
Gross unrealized losses	(8)
Sovereign Bonds \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	3,485
Gross unrealized gains	2
Gross unrealized losses	0
Fair value	3,487
Sovereign Bonds \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	20,944
Gross unrealized gains	147
Gross unrealized losses	(8)
Fair value	21,083
Municipal Bonds \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	6,944
Gross unrealized gains	36
Gross unrealized losses	0
Fair value	$ 6,980

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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