Cash Equivalents and Available for Sale Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2019

Cash and Cash Equivalents [Abstract]

Schedule of Cash Equivalents and Available-for-sale Marketable Securities

Cash equivalents and available-for-sale marketable securities consisted of the following as of June 30, 2019 and December 31, 2018 (in thousands):

	June 30, 2019
	Amortized Cost		Unrealized Gains		Unrealized Losses		Market Value
Cash equivalents:
Money market funds	$	37	$	–	$	–	$	37
Commercial paper		19,960		24		–		19,984
U.S. government debt securities		8,074		31		–		8,105
Total cash equivalents (1)		28,071		55		–		28,126
Short-term investments:
Corporate debt securities		12,318		24		–		12,342
Total short-term investments		12,318		24		–		12,342
Total	$	40,389	$	79	$	–	$	40,468

(1) Included in cash and cash equivalents in the Company’s consolidated balance sheet as of June 30, 2019 in addition to $17.8 million of cash.

	December 31, 2018
	Amortized Cost		Unrealized Gains		Unrealized Losses			Market Value
Cash equivalents:
Money market funds	$	7	$	–	$	–		$	7
Commercial paper		20,648		30		–			20,678
U.S. government debt securities		3,224		2		–			3,226
Total cash equivalents (1)		23,879		32		–			23,911
Short-term investments:
Commercial paper		714		–		–			714
Corporate debt securities		5,444		5		(1	)		5,448
Total short-term investments		6,158		5		(1	)		6,162
Total	$	30,037	$	37	$	(1	)	$	30,073

(1) Included in cash and cash equivalents in the Company’s consolidated balance sheet as of December 31, 2018 in addition to $31.8 million of cash.