Short-term Investments (Tables)

3 Months Ended

Mar. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value of Short-term Investments

The following table summarizes the amortized cost, gross unrealized gains and losses, and fair value of available-for-sale investments as of March 31, 2020:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Aggregate Fair Value
U.S. government debt securities	$	110,489	$	579	$	—	$	111,068
Certificates of deposit	264		—		—		264
Total	$	110,753	$	579	$	—	$	111,332

The following table summarizes the amortized cost, gross unrealized gains and losses, and fair value of available-for-sale investments as of December 31, 2019:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Aggregate Fair Value
U.S. government debt securities	$	8,989	$	7	$	—	$	8,996
Certificates of deposit	264		—		—		264
Total	$	9,253	$	7	$	—	$	9,260