Short-Term Investments (Tables)

6 Months Ended

Jun. 30, 2020

Short-Term Investments.

Summary of amortized cost and estimated fair value of Company's marketable securities

	Amortized		Unrealized		Unrealized
	Cost		Gains		Losses		Fair Value
	(in thousands)
Balance as of December 31, 2019:
U.S. Treasury securities	$	24,957	$	5	$	—	$	24,962
Total	$	24,957	$	5	$	—	$	24,962