Investments Available for Sale (Tables)

3 Months Ended

Mar. 31, 2023

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):

	March 31, 2023
										Fair Value Measurements
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value		Level 1		Level 2
Commercial paper	$	34,464	$	4	$	(28	)	$	34,440	$	—	$	34,440
Certificates of deposit		18,414		3		(42	)		18,375		—		18,375
U.S. Treasury securities		24,430		26		(9	)		24,447		24,447		—
U.S. agency securities		10,965		15		(2	)		10,978		—		10,978
Corporate debt securities		39,342		3		(261	)		39,084		—		39,084
Total investments AFS	$	127,615	$	51	$	(342	)	$	127,324	$	24,447	$	102,877
	December 30, 2022
										Fair Value Measurements
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value		Level 1		Level 2
Commercial paper	$	44,054	$	11	$	(62	)	$	44,003	$	—	$	44,003
Certificates of deposit		17,355		4		(75	)		17,284		—		17,284
U.S. Treasury securities		21,847		3		(15	)		21,835		21,835		—
U.S. agency securities		10,688		16		(3	)		10,701		—		10,701
Corporate debt securities		45,522		4		(288	)		45,238		—		45,238
Total investments AFS	$	139,466	$	38	$	(443	)	$	139,061	$	21,835	$	117,226

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 March 31, 2023
	Within one year		After one year through five years		Total
Commercial paper	$	34,440	$	—	$	34,440
Certificates of deposit		18,375		—		18,375
U.S. Treasury securities		16,331		8,116		24,447
U.S. agency securities		9,256		1,722		10,978
Corporate debt securities		35,477		3,607		39,084
Total investments AFS	$	113,879	$	13,445	$	127,324