Cash, Cash Equivalents and Short-Term Investments (Tables)

6 Months Ended

Jun. 30, 2020

Cash And Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents and Short-Term Investments by Significant Investment Category

The following tables show the Company’s cash and cash equivalents and short-term investments by significant investment category as of June 30, 2020, and December 31, 2019 (in thousands):

	June 30, 2020
	Amortized cost		Gross unrealized gains		Gross unrealized losses		Estimated fair value		Cash and cash equivalents		Short term investments
Cash	$	3,747	$	—	$	—	$	3,747	$	3,747	$	—
Level 1:
Money market funds		24,846		—		—		24,846		24,846		—
U.S. treasury securities		2,067		5		—		2,072		—		2,072
Subtotal		26,913		5		—		26,918		24,846		2,072
Level 2:
Commercial paper		—		—		—		—		—		—
Corporate debt obligations		2,182		7		—		2,189		—		2,189
Repurchase agreements		—		—		—		—		—		—
Asset-backed securities		2,254		5		—		2,259		—		2,259
Subtotal		4,436		12		—		4,448		—		4,448
Total	$	35,096	$	17	$	-	$	35,113	$	28,593	$	6,520

	December 31, 2019
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value		Cash and cash equivalents		Short term investments
Cash	$	3,950	$	—	$	—		$	3,950	$	3,950	$	—
Level 1:
Money market funds		5,500		—		—			5,500		5,500		—
U.S. treasury securities		3,078		2		(1	)		3,079		—		3,079
Subtotal		8,578		2		(1	)		8,579		5,500		3,079
Level 2:
Commercial paper		8,920		—		—			8,920		747		8,173
Corporate debt obligations		5,922		5		(1	)		5,926		—		5,926
Repurchase agreements		3,000		—		—			3,000		3,000		—
Asset-backed securities		4,505		3		—			4,508		—		4,508
Subtotal		22,347		8		(1	)		22,354		3,747		18,607
Total	$	34,875	$	10	$	(2	)	$	34,883	$	13,197	$	21,686