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Cash, Cash Equivalents, and Investments (Tables)
 6 Months Ended
Jul. 02, 2023
Cash and Cash Equivalents [Abstract]  
Components of Cash, Cash Equivalents, and Investments
Cash, cash equivalents, and investments consisted of the following (in thousands):
July 2, 2023December 31, 2022
Cash$146,993 $180,959 
Money market instruments30,492 415 
Cash and cash equivalents177,485 181,374 
Corporate bonds165,539 164,055 
Asset-backed securities15,339 26,890 
Treasury bills9,961 11,332 
Municipal bonds635 624 
Agency bonds— 15,858 
Current investments191,474 218,759 
Corporate bonds361,813 374,440 
Treasury bills62,748 44,214 
Asset-backed securities37,001 33,539 
Sovereign bonds1,932 1,924 
Non-current investments463,494 454,117 
$832,453 $854,250 
Summary of Available-for-Sale Investments
The following table summarizes the Company’s available-for-sale investments as of July 2, 2023 (in thousands):
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Current:
Corporate bonds$169,464 $— $(3,925)$165,539 
Asset-backed securities15,492 — (153)15,339 
Treasury bills10,099 — (138)9,961 
Municipal bonds635 — — 635 
Non-current:
Corporate bonds376,629 329 (15,145)361,813 
Treasury bills63,664 2 (918)62,748 
Asset-backed securities38,737 — (1,736)37,001 
Sovereign bonds2,071 — (139)1,932 
$676,791 $331 $(22,154)$654,968 
Gross Unrealized Losses and Fair Values for Available-for-Sale Investments The following table summarizes the Company’s gross unrealized losses and fair values for available-for-sale investments in an unrealized loss position as of July 2, 2023 (in thousands):
 Unrealized Loss Position For: 
 Less than 12 Months12 Months or GreaterTotal
 Fair ValueUnrealized
Losses		Fair ValueUnrealized
Losses		Fair ValueUnrealized
Losses
Corporate bonds$127,474 $(1,767)$350,232 $(17,303)$477,706 $(19,070)
Treasury bills59,832 (838)11,884 (218)71,716 (1,056)
Asset-backed securities15,850 (199)36,490 (1,690)52,340 (1,889)
Sovereign bonds— — 1,932 (139)1,932 (139)
Municipal bonds— — — — — — 
$203,156 $(2,804)$400,538 $(19,350)$603,694 $(22,154)
Effective Maturity Dates of Available-for-Sale Investments
The following table presents the effective maturity dates of the Company’s available-for-sale investments as of July 2, 2023 (in thousands):
<1 year1-2 Years2-3 Years3-4 Years4-5 Years5-8 YearsTotal
Corporate bonds$165,539 $129,096 $95,060 $56,128 $81,073 $456 $527,352 
Treasury bills9,961 3,362 16,263 20,408 22,715 — 72,709 
Asset-backed securities15,339 11,622 11,093 7,227 — 7,059 52,340 
Sovereign bonds— 974 958 — — — 1,932 
Municipal bonds635 — — — — — 635 
$191,474 $145,054 $123,374 $83,763 $103,788 $7,515 $654,968