Investments (Tables)

12 Months Ended

Dec. 30, 2023

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 December 30, 2023 and December 31, 2022 (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
December 30, 2023
Money market investments	$	16,832	$	—	$	—	$	16,832
Asset-backed securities		16,543		—		2,236		14,307
Corporate bonds 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
December 31, 2022
Money market investments	$	21,910	$	—	$	—	$	21,910
Asset-backed securities		18,905		—		2,889		16,016
Corporate bonds and direct obligations of government agencies		126,134		1		7,775		118,360
U.S. Treasury obligations		2,344		—		100		2,244
Total	$	169,293	$	1	$	10,764	$	158,530

Schedule of Unrealized Loss on Available-for-Sale Investments

For those available-for-sale investments with unrealized losses at December 30, 2023 and December 31, 2022, 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
December 30, 2023
Asset-backed securities	$	—	$	—	$	14,307	$	2,236	$	14,307	$	2,236
Corporate bonds 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
December 31, 2022
Asset-backed securities	$	—	$	—	$	16,016	$	2,889	$	16,016	$	2,889
Corporate bonds and direct obligations of government agencies		54,031		1,516		62,390		6,259		116,421		7,775
U.S. Treasury obligations		2,244		100		—		—		2,244		100
Total	$	56,275	$	1,616	$	78,406	$	9,148	$	134,681	$	10,764