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Cash and Investments - Investments by Security Type (Details) - USD ($) $ in Thousands	Apr. 01, 2022	Dec. 31, 2021
Debt securities available-for-sale:
Amortized Cost	$ 1,694,472	$ 1,534,464
Gross Unrealized Gains	100	934
Gross Unrealized Losses	(8,459)	(1,730)
Fair Value	1,686,113	1,533,668
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	1,997,230	1,855,704
Gross Unrealized Gains	100	934
Gross Unrealized Losses	(8,459)	(1,730)
Fair Value	1,988,871	1,854,908
Commercial paper
Debt securities available-for-sale:
Amortized Cost	954,283	945,801
Gross Unrealized Gains	5	42
Gross Unrealized Losses	(26)	(2)
Fair Value	954,262	945,841
Corporate bonds
Debt securities available-for-sale:
Amortized Cost	529,129	541,774
Gross Unrealized Gains	95	876
Gross Unrealized Losses	(7,123)	(1,672)
Fair Value	522,101	540,978
U.S. Treasury and government-sponsored enterprises
Debt securities available-for-sale:
Amortized Cost	197,605	33,965
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(1,141)	(21)
Fair Value	196,464	33,945
Municipal bonds
Debt securities available-for-sale:
Amortized Cost	13,455	12,924
Gross Unrealized Gains	0	15
Gross Unrealized Losses	(169)	(35)
Fair Value	13,286	12,904
Cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	97,602	135,653
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	97,602	135,653
Money market funds
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	87,255	66,531
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	87,255	66,531
Certificates of deposit
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	117,901	119,056
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 117,901	$ 119,056

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