Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Summary of Assets Measured at Fair Value on Recurring Basis

The following table summarizes assets measured at fair value on a recurring basis at June 30, 2020 (in thousands):

			Active		Observable		Unobservable
	June 30,		Markets		Inputs		Inputs
Description	2020		(Level 1)		(Level 2)		(Level 3)
Money market funds (included in    cash and cash equivalents)	$	70,889	$	70,889	$	—	$	—
Total	$	70,889	$	70,889	$	—	$	—

The following table summarizes assets measured at fair value on a recurring basis at December 31, 2019 (in thousands):

			Active		Observable		Unobservable
	December 31,		Markets		Inputs		Inputs
Description	2019		(Level 1)		(Level 2)		(Level 3)
Money market funds (included in    cash and cash equivalents)	$	33,774	$	33,774	$	—	$	—
U.S. treasury securities (included    in marketable securities)		57,699		57,699		—		—
Total	$	91,473	$	91,473	$	—	$	—