Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

The table below summarizes the marketable securities:

	June 30, 2020
	Amortized Cost		Unrealized Gains		Unrealized Losses		Aggregate Fair Value
	(in thousands)
Money market funds	$	56,750	$	—	$	—	$	56,750
Cash equivalents	56,750		—		—		56,750
U.S. treasury securities	60,010		133		—		60,143
Corporate bonds	8,604		58		—		8,662
Commercial paper	2,694		—		—		2,694
Short-term investments	71,308		191		—		71,499
Total marketable securities	$	128,058	$	191	$	—	$	128,249

	December 31, 2019
	Amortized Cost		Unrealized Gains		Unrealized Losses		Aggregate Fair Value
	(in thousands)
Money market funds	$	3,068	$	—	$	—	$	3,068
Commercial paper	2,495		—		—		2,495
Cash equivalents	5,563		—		—		5,563
U.S. treasury securities	67,051		34		(2)		67,083
Corporate bonds	9,075		24		(2)		9,097
Commercial paper	5,165		—		—		5,165
Short-term investments	81,291		58		(4)		81,345
Corporate bonds	1,278		—		—		1,278
Long-term investments	1,278		—		—		1,278
Total marketable securities	$	88,132	$	58	$	(4)	$	88,186