Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Assets Measured at Fair Value on Recurring Basis

Assets measured at fair value on a recurring basis were as follows:

Description	June 30, 2021		Quoted Prices (Unadjusted) in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in thousands)
Cash equivalents:
Money market mutual funds	$	116,063	$	116,063	$	—	$	—
Total cash equivalents	$	116,063	$	116,063	$	—	$	—
Short-term investments:
Commercial paper	$	61,944	$	—	$	61,944	$	—
Corporate debt securities		35,036		—		35,036		—
Total short-term investments	$	96,980	$	—	$	96,980	$	—
Total financial assets	$	213,043	$	116,063	$	96,980	$	—
Description	December 31, 2020		Quoted Prices (Unadjusted) in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in thousands)
Cash equivalents:
Money market mutual funds	$	217,181	$	217,181	$	—	$	—
Total financial assets	$	217,181	$	217,181	$	—	$	—