Cash Equivalents and Investments (Tables)

9 Months Ended

Sep. 30, 2020

Cash and Cash Equivalents [Abstract]

Schedule of fair value of securities, not including cash

The following tables summarize the gross unrealized gains and losses of the Company’s marketable securities as of September 30, 2020 and December 31, 2019:

	September 30, 2020
			Gross Unrealized						Estimated Fair Value
	Amortized Cost		Gains		Losses		Credit Losses
Money market funds	$	28,059	$	—	$	—	$	—	$	28,059
Commercial paper	9,984		—		—		—		9,984
Corporate notes	11,161		25		—		—		11,186
U.S. government securities	13,764		40		—		—		13,804
U.S. government agency bonds	3,498		1		—		—		3,499
U.S. asset-backed securities	3,550		12		—		—		3,562
	$	70,016	$	78	$	—	$	—	$	70,094
Classified as:
Cash equivalents									$	28,059
Short-term investments									42,035
									$	70,094

	December 31, 2019
			Gross Unrealized				Estimated Fair Value
(In thousands)	Amortized Cost		Gains		Losses
Money market funds	$	5,381	$	—	$	—	$	5,381
Commercial paper	11,892		—		—		11,892
Corporate notes	18,369		11		—		18,380
U.S. government securities	11,291		4		—		11,295
U.S. asset-backed securities	10,503		6		—		10,509
	$	57,436	$	21	$	—	$	57,457
Classified as:
Cash equivalents							$	5,381
Short-term investments							42,829
Long-term investments							9,247
							$	57,457