Short-term Investments (Tables)

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Debt Securities, Available-for-sale

Short-term investments consisted of available-for-sale and equity securities as follows (in thousands):

Type of securities as of March 31, 2023	Amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
Corporate debt securities	$	15,291	$	1	$	(30)	$	15,262
Government-related debt securities	18,001		—		(27)		17,974
Total available-for-sale debt securities	$	33,292	$	1	$	(57)	$	33,236

Type of securities as of December 31, 2022	Amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
Corporate debt securities	$	62,862	$	—	$	(359)	$	62,503
Government-related debt securities	22,009		—		(230)		21,779
Total available-for-sale debt securities	$	84,871	$	—	$	(589)	$	84,282

Fair Values of Available-for-Sale Securities by Contractual Maturity

The fair values of available-for-sale debt securities by contractual maturity were as follows (in thousands):

	March 31, 2023		December 31, 2022
Maturing in one year or less	$	33,236	$	81,004
Maturing in one to three years	—		3,278
Total available-for-sale debt securities	$	33,236	$	84,282

Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value

The following table summarizes investments that have been in a continuous unrealized loss position as of March 31, 2023 (in thousands).

	Less than 12 months				12 months or greater				Total
	Fair Value		Gross unrealized losses		Fair Value		Gross unrealized losses		Fair Value		Gross unrealized losses
Corporate debt securities	$	8,474	$	(28)	$	3,498	$	(2)	$	11,972	$	(30)
Government-related debt securities	—		—		17,974		(27)		17,974		(27)
Total	$	8,474	$	(28)	$	21,472	$	(29)	$	29,946	$	(57)