Fair Value of Financial Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value of Financial Assets and Liabilities

Summary of financial assets measured at fair value on recurring basis

	Fair Value Measurements at March 31, 2020
	Total		Level 1		Level2		Level 3
Assets:
Money market funds, included in cash and cash equivalents	$	106,807	$	106,807	$	—	$	—
U.S. Treasury obligations		111,977		—		111,977		—
Total assets	$	218,784	$	106,807	$	111,977	$	—

	Fair Value Measurements at December 31, 2019
	Total		Level 1		Level 2		Level 3
Assets:
Money market funds, included in cash and cash equivalents	$	91,332	$	91,332	$	—	$	—
U.S. Treasury obligations, included in cash and cash equivalents		9,995		—		9,995		—
U.S. Treasury obligations		135,457		—		135,457		—
Total assets	$	236,784	$	91,332	$	145,452	$	—