Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables present our assets and liabilities measured at fair value on a recurring basis (in thousands):

	Fair Value Measurements on a Recurring Basis as of
	March 31, 2021
Fair value measurements in:	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	612,279	$	—	$	—	$	612,279
Total	$	612,279	$	—	$	—	$	612,279

	Fair Value Measurements on a Recurring Basis as of
	December 31, 2020
Fair value measurements in:	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	221,407	$	—	$	—	$	221,407
Total	$	221,407	$	—	$	—	$	221,407

Summary of Fair Value of Level 3 Liability

The following table summarizes the change in fair value of the Level 3 liabilities for contingent consideration liabilities from acquisitions with significant unobservable inputs (in thousands):

	Three Months Ended March 31,
	2021		2020
Beginning of period balance	$	—	$	2,595
Changes in fair value included in earnings	—		(568)
End of period balance	$	—	$	2,027