Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2019 (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Assets:
Money market instruments	$	15,933	$	—	$	—
Treasury bills	—		309,248
Corporate bonds	—		212,098		—
Asset-backed securities	—		113,083		—
Sovereign bonds	—		22,299		—
Municipal bonds	—		6,952
Agency bonds	—		5,914		—
Certificate of deposit	—		4,328		—
Economic hedge forward contracts			857		—
Liabilities:
Economic hedge forward contracts	—		23		—
Contingent consideration liabilities	—		—		1,153

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following table summarizes the activity for the Company's liabilities measured at fair value using Level 3 inputs (in thousands):

Balance as of December 31, 2017	$	3,557
Payment of GVi contingent consideration	(1,000		)
Fair value adjustment to GVi contingent consideration	1,065
Fair value adjustment to Manatee contingent consideration	(1,350		)
Fair value adjustment to Chiaro contingent consideration	282
Balance as of December 31, 2018	2,554
Fair value adjustment to GVi contingent consideration	(1,646		)
Fair value adjustment to Chiaro contingent consideration	245
Balance as of December 31, 2019	$	1,153