Marketable securities - available-for-sale debt securities (Tables)

6 Months Ended

Jun. 30, 2022

Marketable securities - available-for-sale debt securities

Schedule of marketable securities

As of June 30, 2022, the Company has the following investments in marketable securities (in thousands):

				Gross		Gross		Aggregate
	Remaining	Amortized		unrealized		unrealized		estimated
	contractual maturity	cost		gains		losses		fair value
Available-for-sale debt securities:
Corporate debt securities	Less than 3 months	$	15,289	$	1	$	(35)	$	15,255
U.S. Treasury securities	Less than 3 months		24,067		—		(28)		24,039
Corporate debt securities	3 months to 1 year		83,865		—		(1,128)		82,737
U.S. Treasury securities	3 months to 1 year		18,073		—		(90)		17,983
Agency bonds	1 year to 2 years		5,009		—		(139)		4,870
Corporate debt securities	1 year to 2 years		15,803		—		(409)		15,394
		$	162,106	$	1	$	(1,829)	$	160,278

Schedule of aggregate fair value and number of securities held by the Company in an unrealized loss position

The aggregate fair value (in thousands) and number of securities held by the Company (including those classified as cash equivalents) in an unrealized loss position as of June 30, 2022 and December 31, 2021 are as follows:

	June 30, 2022						December 31, 2021
	Fair market value of investments in an unrealized loss position		Number of investments in an unrealized loss position		Unrealized losses		Fair market value of investments in an unrealized loss position		Number of investments in an unrealized loss position		Unrealized losses
Marketable securities in a continuous loss position for 12 months or longer:
Corporate debt securities	$	42,692		7	$	(493)	$	8,232		1		(35)
Marketable securities in a continuous loss position for less than 12 months:
Corporate debt securities	$	67,045		16	$	(1,079)	$	163,258		34	$	(348)
U.S. Treasury securities		42,022		8		(118)		—		—		—
Agency bond		4,870		1		(139)		4,993		1		(7)
	$	156,629		32	$	(1,829)	$	176,483		36	$	(390)