Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule of available-for-sale marketable securities and cash and cash equivalents

Available-for-sale marketable securities and cash and cash equivalents as of March 31, 2020 and December 31, 2019 consist of the following (in thousands):

	March 31, 2020
	Amortized Cost Value		Gross  Unrealized  Gains		Gross  Unrealized  Losses			Fair Value
Cash and cash equivalents:
Cash	$	21,949	$	—	$	—		$	21,949
Money market funds	18,774		—		—			18,774
Total	$	40,723	$	—	$	—		$	40,723
Marketable securities:
Domestic corporate debt securities	$	68,115	$	—	$	(638	)	$	67,477
Domestic corporate commercial paper	17,410		5		(54		)	17,361
Agency bonds	12,398		21		—			12,419
Total	$	97,923	$	26	$	(692	)	$	97,257

 

	December 31, 2019
	Amortized Cost Value		Gross  Unrealized  Gains		Gross  Unrealized  Losses			Fair Value
Cash and cash equivalents:
Cash	$	34,726	$	—	$	—		$	34,726
Money market funds	35,160		—		—			35,160
Total	$	69,886	$	—	$	—		$	69,886
Marketable securities:
Domestic corporate debt securities	$	41,229	$	3	$	(3	)	$	41,229
Domestic corporate commercial paper	24,900		5					24,905
Agency bonds	12,391		1		(3		)	12,389
US treasury bonds	12,492		—		—			12,492
Total	$	91,012	$	9	$	(6	)	$	91,015

Schedule of debt securities, available for sale, unrealized loss position

The following table summarizes such investments by major security type and length of time in a continuous unrealized loss position as of March 31, 2020 (in thousands).

	Less than 12 Months			12 months or longer		Total
	Fair value	Unrealized losses		Fair value	Unrealized losses	Fair value	Unrealized losses
Available-for-sale debt securities
Corporate debt securities	67,477	(638	)	—	—	67,477	(638	)
Corporate commercial paper	4,866	(54	)	—	—	4,866	(54	)
Total available-for-sale debt securities	72,343	(692	)	—	—	72,343	(692	)