Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2019

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 June 30, 2019 and December 31, 2018 consist of the following (in thousands):

	June 30, 2019
	Amortized Cost Value		Gross  Unrealized  Gains		Gross  Unrealized  Losses			Fair Value
Cash and cash equivalents:
Cash	$	63,660	$	—	$	—		$	63,660
Money market funds	3,241		—		—			3,241
Total	$	66,901	$	—	$	—		$	66,901
Marketable securities:
Domestic corporate debt securities	$	74,752	$	—	$	(9	)	$	74,743
Domestic corporate commercial paper	16,841		—		(11		)	16,830
Agency bonds	30,028		—		(25		)	30,003
Total	$	121,621	$	—	$	(45	)	$	121,576

 

	December 31, 2018
	Amortized Cost Value		Gross  Unrealized  Gains		Gross  Unrealized  Losses			Fair Value
Cash and cash equivalents:
Cash	$	20,448	$	—	$	—		$	20,448
Money market funds	38,873		—		—			38,873
Total	$	59,321	$	—	$	—		$	59,321
Marketable securities:
Domestic corporate debt securities	$	132,886	$	—	$	(530	)	$	132,356
Agency bonds	45,009		—		(225		)	44,784
Total	$	177,895	$	—	$	(755	)	$	177,140