Cash Equivalents and Investments (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2020 and December 31, 2019:

	March 31, 2020
	Gross Unrealized									Estimated Fair Value
	Amortized Cost		Gains		Losses			Credit Losses
Money market funds	$	32,089	$	—	$	—		—		$	32,089
Commercial paper	7,061		—		—			—		7,061
Corporate notes	14,466		—		(44		)	—		14,422
U.S. government securities	7,786		103		—			—		7,889
U.S. asset-backed securities	8,303		3		—			—		8,306
	$	69,705	$	106	$	(44	)	$	—	$	69,767
Classified as:
Cash equivalents										$	32,090
Short term investments										35,957
Long term investments										1,720
										$	69,767

	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