Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

Marketable securities by security type consisted of the following:

	December 31, 2023
(in thousands)	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
U.S. treasury bills and notes	$	147,978	$	144	$	(15	)	$	148,107
U.S. agency securities		269,520		277		(134	)		269,663
Total	$	417,498	$	421	$	(149	)	$	417,770

	December 31, 2022
(in thousands)	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
U.S. treasury bills and notes	$	228,432	$	13	$	(301	)	$	228,144
U.S. agency securities		211,658		68		(474	)		211,252
Total	$	440,090	$	81	$	(775	)	$	439,396

The remaining contractual maturities of all marketable securities were less than 24 months as of December 31, 2023 and 2022.