Marketable Securities

12 Months Ended

Dec. 31, 2023

Marketable Securities [Abstract]

Marketable Securities

3. Marketable Securities

Marketable securities by security type consisted of the following (in thousands):

	December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Commercial paper (due within one year)	$	67,098	$	26	$	(44	)	$	67,080
Corporate bonds (due within one year)		87,756		7		(193	)		87,570
Government securities (due within one year)		71,548		14		(74	)		71,488
U.S. treasury securities (due within one year)		34,469		7		(14	)		34,462
Corporate bonds (due after one year through two years)		106,120		321		(62	)		106,379
Government securities (due after one year through two years)		17,496		44		(1	)		17,539
	$	384,487	$	419	$	(388	)	$	384,518

	December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Commercial paper (due within one year)	$	90,685	$	1	$	(93	)	$	90,593
Corporate bonds (due within one year)		70,668		1		(332	)		70,337
Government securities (due within one year)		19,267		22		(28	)		19,261
U.S. treasury securities (due within one year)		28,560		—		(23	)		28,537
Corporate bonds (due after one year through two years)		5,262		—		(18	)		5,244
Government securities (due after one year through two years)		16,409		—		(24	)		16,385
	$	230,851	$	24	$	(518	)	$	230,357