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Short-Term Investments (Tables)
3 Months Ended
Mar. 29, 2024
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-Sale Debt Securities
As of March 29, 2024, the Company’s available-for-sale investments consisted of the following cost, unrealized positions and estimated fair value, disaggregated by class of instrument:

 Gross Unrealized
(in thousands)CostGainsLossesEstimated Fair Value
U.S. Treasury securities$115,297 $$(176)$115,125 
Corporate bonds62,128 (53)62,076 
Commercial paper instruments3,482 — (2)3,480 
Asset-backed securities2,964 — (6)2,958 
Total short-term investments$183,871 $5 $(237)$183,639 
The sale and/or maturity of available-for-sale investments resulted in the following realized activity during the first quarter of 2024:

First Quarter
(in thousands)2024
Gross realized gains$— 
Gross realized losses— 
Proceeds1,116