Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

The table below summarizes the marketable securities:

	March 31, 2020
	Amortized Cost		Unrealized Gains		Unrealized Losses		Aggregate Fair Value
	(in thousands)
Money market funds	$	62,194	$	—	$	—	$	62,194
Cash equivalents	62,194		—		—		62,194
U.S. treasury securities	52,025		323		—		52,348
Corporate bonds	11,816		4		(47)		11,773
Commercial paper	13,252		—		—		13,252
Short-term investments	77,093		327		(47)		77,373
Corporate bonds	1,278		—		(4)		1,274
Long-term investments	1,278		—		(4)		1,274
Total marketable securities	$	140,565	$	327	$	(51)	$	140,841

	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