Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

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

	Fair Value Measurement at Reporting Date Using
			Significant
	Quoted Prices in		Other		Significant
	Active Markets		Observable		Unobservable
	for Identical		Inputs		Inputs
	Assets (Level 1)		(Level 2)		(Level 3)		Total
	(in thousands)
As of December 31, 2019
Assets:
Money market funds	$	460	$	—	$	—	$	460
U.S. government securities		300		—		—		300
	$	760	$	—	$	—	$	760
Liabilities:
Earn-out liability	$	—	$	—	$	2,911	$	2,911
As of December 31, 2018
Assets:
Money market funds	$	458	$	—	$	—	$	458
U.S. government securities		1,282		—		—		1,282
	$	1,740	$	—	$	—	$	1,740
Liabilities:
Earn-out liability	$	—	$	—	$	10,450	$	10,450

Schedule of Reconciliation of Change Fair Value

Balance as of January 1, 2019	$	10,450
Payments		(7,219)
Change in fair value		(320)
Change in foreign currency exchange rate		—
Balance as of December 31, 2019	$	2,911
Changes in the earn-out liability during 2018 was as follows:
Balance as of January 1, 2018	$	—
Acquisitions		13,497
Change in fair value		(2,569)
Change in foreign currency exchange rate		(478)
Balance as of December 31, 2018	$	10,450