Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2020

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

The following table summarizes the financial instruments measured at fair value on a recurring basis classified in the fair value hierarchy (Level 1, 2 or 3) based on the inputs used for valuation in the accompanying unaudited condensed consolidated balance sheets:



	As of June 30, 2020						As of December 31, 2019
Fair Value Measurements:	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3

Marketable securities (see Note 7)
Equity securities	$	—	$	—	$	—	$	4,404	$	—	$	—
Money market and mutual funds	98,848		—		—		38,799		—		—
Corporate bonds	—		8,892		—		—		4,098		—
Government securities - U.S.	—		26,740		—		—		5,446		—
Other fixed-income securities	—		1,900		—		—		1,637		—
Total assets	$	98,848	$	37,532	$	—	$	43,203	$	11,181	$	—

Contingent consideration payable (see Note 10)	$	—	$	—	$	1,914	$	—	$	—	$	17,327
Total liabilities	$	—	$	—	$	1,914	$	—	$	—	$	17,327