Investments Available for Sale (Tables)

6 Months Ended

Jun. 28, 2024

Investments, Debt and Equity Securities [Abstract]

Summary of Investments Available for Sale and Related Fair Value Measurement

Investments available for sale (“AFS”) and the related fair value measurement consisted of the following (dollars in thousands):

	June 28, 2024
										Fair Value Measurements
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value		Level 1		Level 2
Commercial paper	$	3,565	$	1	$	—		$	3,566	$	—	$	3,566
Certificates of deposit		1,762		1		—			1,763		—		1,763
U.S. Treasury securities		13,943		—		(66	)		13,877		13,877		—
U.S. agency securities		989		—		(2	)		987		—		987
Corporate debt securities		22,503		3		(10	)		22,496		—		22,496
Total investments AFS	$	42,762	$	5	$	(78	)	$	42,689	$	13,877	$	28,812
	December 29, 2023
										Fair Value Measurements
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value		Level 1		Level 2
Commercial paper	$	7,720	$	9	$	—		$	7,729	$	—	$	7,729
Certificates of deposit		3,716		4		—			3,720		—		3,720
U.S. Treasury securities		23,036		3		(56	)		22,983		22,983		—
U.S. agency securities		3,423		—		(4	)		3,419		—		3,419
Corporate debt securities		11,538		12		(10	)		11,540		—		11,540
Total investments AFS	$	49,433	$	28	$	(70	)	$	49,391	$	22,983	$	26,408

Summary of Fair Value of Investments Available for Sale by Contractual Maturity

The following table shows the fair value of investments AFS by contractual maturity (dollars in thousands):

	As of June 28, 2024
	Within one year		After one year through five years		Total
Commercial paper	$	3,566	$	—	$	3,566
Certificates of deposit		1,763		—		1,763
U.S. Treasury securities		13,877		—		13,877
U.S. agency securities		987		—		987
Corporate debt securities		22,231		265		22,496
Total investments AFS	$	42,424	$	265	$	42,689