Short-Term Investments

6 Months Ended

Jun. 30, 2020

Short-Term Investments.

Short-Term Investments

3. Short-Term Investments

The following table summarizes the amortized cost and estimated fair value of the Company’s marketable securities, which are considered to be available-for-sale investments and are included in short-term investments on the consolidated balance sheet as of December 31, 2019. The Company had no short-term investments as of June 30, 2020.

	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

Certain short-term debt securities with original maturities of less than 90 days are included in cash and cash equivalents on the consolidated balance sheets and are not included in the table above. As of December 31, 2019, all short-term investments had contractual maturities within one year.