Cash, Cash Equivalents, and Investments - Summary of Available-for-Sale Investments (Details) $ in Thousands	Jun. 28, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 603,822
Gross unrealized gains	6,747
Gross unrealized losses	(398)
Fair value	610,171
Agency Bonds
Debt Securities, Available-for-sale [Line Items]
Fair value	22,054
Agency Bonds \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	22,035
Gross unrealized gains	37
Gross unrealized losses	(18)
Fair value	22,054
Treasury Bills
Debt Securities, Available-for-sale [Line Items]
Fair value	230,692
Treasury Bills \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	33,480
Gross unrealized gains	538
Gross unrealized losses	0
Fair value	34,018
Treasury Bills \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	194,330
Gross unrealized gains	2,345
Gross unrealized losses	(1)
Fair value	196,674
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Fair value	236,660
Corporate Bonds \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	42,065
Gross unrealized gains	221
Gross unrealized losses	(38)
Fair value	42,248
Corporate Bonds \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	192,233
Gross unrealized gains	2,513
Gross unrealized losses	(334)
Fair value	194,412
Asset-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Fair value	91,610
Asset-Backed Securities \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	49,899
Gross unrealized gains	412
Gross unrealized losses	0
Fair value	50,311
Asset-Backed Securities \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	40,817
Gross unrealized gains	484
Gross unrealized losses	(2)
Fair value	41,299
Sovereign Bonds
Debt Securities, Available-for-sale [Line Items]
Fair value	27,517
Sovereign Bonds \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	14,787
Gross unrealized gains	82
Gross unrealized losses	0
Fair value	14,869
Sovereign Bonds \| Long-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	12,533
Gross unrealized gains	115
Gross unrealized losses	0
Fair value	12,648
Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Fair value	1,638
Municipal Bonds \| Short-Term Investments
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,643
Gross unrealized gains	0
Gross unrealized losses	(5)
Fair value	$ 1,638

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).

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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).

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