Investments (Tables)

9 Months Ended

Sep. 28, 2024

Amortized Cost and Fair Value of Available-for-Sale Investments

The amortized cost and fair values of available-for-sale investments are as follows at September 28, 2024 and December 30, 2023 (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
September 28, 2024
Money market investments	$	14,998	$	—	$	—	$	14,998
Asset-backed securities		17,535		21		1,563		15,993
Corporate bonds, commercial paper and direct obligations of government agencies		118,857		998		1,987		117,868
Total	$	151,390	$	1,019	$	3,550	$	148,859
December 30, 2023
Money market investments	$	16,832	$	—	$	—	$	16,832
Asset-backed securities		16,543		—		2,236		14,307
Corporate bonds, commercial paper and direct obligations of government agencies		118,481		279		4,384		114,376
U.S. Treasury obligations		6,287		2		43		6,246
Total	$	158,143	$	281	$	6,663	$	151,761

Schedule of Unrealized Loss on Available-for-Sale Investments

For those available-for-sale investments with unrealized losses at September 28, 2024 and December 30, 2023, the following table summarizes the duration of the unrealized loss (in thousands):

	Less than 12 months				12 months or longer						Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
September 28, 2024
Asset-backed securities	$	—	$	—	$	13,107	$	1,563	$	13,107	$	1,563
Corporate bonds, commercial paper, and direct obligations of government agencies		—		—		65,324		1,987		65,324		1,987
Total	$	—	$	—	$	78,431	$	3,550	$	78,431	$	3,550
December 30, 2023
Asset-backed securities	$	—	$	—	$	14,307	$	2,236	$	14,307	$	2,236
Corporate bonds, commercial paper, and direct obligations of government agencies		3,506		42		86,841		4,342		90,347		4,384
U.S. Treasury obligations		—		—		2,305		43		2,305		43
Total	$	3,506	$	42	$	103,453	$	6,621	$	106,959	$	6,663