Investments in marketable securities (Tables)

6 Months Ended

Jun. 30, 2023

Investments in marketable securities consisted of the following:


	Amortized Cost		Gross Unrealized Gain(1)		Gross Unrealized Loss(1)		Fair Value
As of June 30, 2023	(in thousands)
Cash equivalents
Money market	$	21,816	$	—	$	—	$	21,816
Total	$	21,816	$	—	$	—	$	21,816
Investments in marketable short-term securities
US government agency bonds	$	35,624	$	—	$	(314)	$	35,310
US corporate bonds	56,066		—		(507)		55,559
US treasury bills	7,834		—		(4)		7,830
US government bonds	26,944		—		(356)		26,588
Total	$	126,468	$	—	$	(1,181)	$	125,287
Investments in marketable long-term securities

US corporate bonds	9,161		—		(66)		9,095
Yankee bonds	1,999		—		(37)		1,962

Total	$	11,160	$	—	$	(103)	$	11,057

(1) Gross unrealized gain (loss) is pre-tax and is reported in accumulated other comprehensive loss.


	Amortized Cost		Gross Unrealized Gain(1)		Gross Unrealized Loss(1)		Fair Value
As of December 31, 2022	(in thousands)
Cash equivalents
Money market	$	23,218	$	—	$	—	$	23,218
Total	$	23,218	$	—	$	—	$	23,218
Investments in marketable short-term securities
US government agency bonds	$	26,686	$	—	$	(424)	$	26,262
US corporate bonds	27,144		—		(303)		26,841
US treasury bills	8,483		—		(16)		8,467
US government bonds	$	55,361	$	—	$	(794)	$	54,567
Total	$	117,674	$	—	$	(1,537)	$	116,137
Investments in marketable long-term securities
US government agency bonds	$	3,724	$	—	$	(130)	$	3,594
US treasury bills	25,433		—		(336)		25,097
US government bonds	8,972		—		(300)		8,672
Total	$	38,129	$	—	$	(766)	$	37,363

(1) Gross unrealized gain (loss) is pre-tax and is reported in accumulated other comprehensive loss.