Investments (Tables)

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Short-term investments as of September 30, 2021, consist of the following (in thousands):

	Adjusted Cost		Unrealized Gains		Unrealized Losses		Fair Value
Corporate bonds	$	149,606	$	1	$	(12)	$	149,595
Government bonds	15,499		—		—		15,499
Asset-backed bonds	22,559		1		(1)		22,559
Total short-term investments	$	187,664	$	2	$	(13)	$	187,653

Short-term investments as of December 31, 2020, consist of the following (in thousands):

	Adjusted Cost		Unrealized Gains		Unrealized Losses		Fair Value
Corporate bonds	$	55,224	$	5	$	(2)	$	55,227
Government bonds	14,121		2		—		14,123
Asset-backed bonds	3,514		—		—		3,514
Total short-term investments	$	72,859	$	7	$	(2)	$	72,864