Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2020

Marketable Securities

Summary of investments

The following table summarizes the Company’s investments as of June 30, 2020 (in thousands):

			Gross
	Amortized		Unrealized				Estimated
	Cost		Gains		Losses		Fair Value
Marketable securities available-for-sale:
U.S. Treasury obligations	$	25,999	$	49	$	—	$	26,048
Total available-for-sale securities	$	25,999	$	49	$	—	$	26,048

The following table summarizes the Company’s investments as of December 31, 2019 (in thousands):

			Gross
	Amortized		Unrealized				Estimated
	Cost		Gains		Losses		Fair Value
Marketable securities available-for-sale:
U.S. Treasury obligations	$	121,103	$	39	$	(2)	$	121,140
Total available-for-sale securities	$	121,103	$	39	$	(2)	$	121,140