Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value, Nonrecurring [Member]

Schedule of Financial Instruments and the Related Fair Value Hierarchy of the Valuation Techniques Utilized

The following table presents the fair value of financial instruments recorded originally at amortized cost or fair value and not remeasured on a recurring basis (in thousands):

		June 30, 2022
Balance Sheet Classification	Type of Instrument	Level 1		Level 2		Level 3		Total
Financial Assets:
Cash and cash equivalents:	Money market funds	$	549,895	$	—	$	—	$	549,895
Total Financial Assets		$	549,895	$	—	$	—	$	549,895
		December 31, 2021
Balance Sheet Classification	Type of Instrument	Level 1		Level 2		Level 3		Total
Financial Assets:
Cash and cash equivalents	Money market funds	$	598,833	$	—	$	—	$	598,833
Total Financial Assets		$	598,833	$	—	$	—	$	598,833

Fair Value, Recurring [Member]

Schedule of Financial Instruments and the Related Fair Value Hierarchy of the Valuation Techniques Utilized

The following table presents the fair value of financial instruments recorded at fair value at inception and remeasured on a recurring basis (in thousands):

		June 30, 2022
Balance Sheet Classification	Type of Instrument	Level 1		Level 2		Level 3		Total
Financial Assets:
Marketable securities:	US government obligations	$	248,307		—		—	$	248,307
Total Financial Assets		$	248,307	$	—	$	—	$	248,307
		December 31, 2021
Balance Sheet Classification	Type of Instrument	Level 1		Level 2		Level 3		Total
Financial Assets:
Marketable securities:	US government obligations	$	60,358	$	—	$	—	$	60,358
Total Financial Assets		$	60,358	$	—	$	—	$	60,358