Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table summarizes the Company's financial assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy. Financial assets and financial liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement (in thousands):

	As of September 30, 2021
	Quoted		Significant
	Prices in		Other		Significant
	Active		Observable		Unobservable
	Markets		Inputs		Inputs		Total Fair
	(Level 1)		(Level 2)		(Level 3)		Value
Assets:
Cash equivalents:
Money market funds	$	489,664	$	—	$	—	$	489,664
Total financial assets	$	489,664	$	—	$	—	$	489,664
Liabilities:
Derivative instruments - acquisition-related deferred    common stock consideration		—		1,024		—		1,024
Total financial liabilities	$	—	$	1,024	$	—	$	1,024
	As of December 31, 2020
	Quoted		Significant
	Prices in		Other		Significant
	Active		Observable		Unobservable
	Markets		Inputs		Inputs		Total Fair
	(Level 1)		(Level 2)		(Level 3)		Value
Assets:
Cash equivalents:
Money market funds	$	432,560	$	—	$	—	$	432,560
Total financial assets	$	432,560	$	—	$	—	$	432,560
Liabilities:
Contingent consideration	$	—	$	—	$	10,619	$	10,619
Derivative instruments - acquisition-related deferred    common stock consideration		—		1,011		—		1,011
Total financial liabilities	$	—	$	1,011	$	10,619	$	11,630

Summary of Changes in Level 3 Financial Instruments

The following tables summarize the changes in Level 3 financial instruments (in thousands):

Fair value at December 31, 2019	$	—
Contingent consideration from Connexient acquisition		340
Contingent consideration from one2many acquisition		2,190
Fair value at March 31, 2020		2,530
Contingent consideration from Techwan acquisition		2,030
Adjustment for Connexient acquisition		(340	)
Foreign currency translation		72
Fair value at June 30, 2020		4,292
Contingent consideration from SnapComms acquisition		2,047
Adjustment for one2many acquisition		1,370
Adjustment for Techwan acquisition		130
Foreign currency translation		157
Fair value at September 30, 2020	$	7,996

Fair value at December 31, 2020	$	10,619
Contingent consideration from RedSky acquisition		9,135
Adjustment for one2many acquisition		(690	)
Adjustment for SnapComms acquisition		732
Foreign currency translation		(465	)
Fair value at March 31, 2021		19,331
Adjustment for one2many acquisition		38
Adjustment for SnapComms acquisition		(23	)
Payment for SnapComms acquisition		(720	)
Foreign currency translation		149
Fair value at June 30, 2021		18,775
Adjustment for one2many acquisition		1,060
Adjustment for RedSky acquisition		(8,163	)
Payment for one2many acquisition		(10,679	)
Payment for RedSky acquisition		(972	)
Foreign currency translation		(21	)
Fair value at September 30, 2021	$	—