Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016 (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	$	2,334	$	—		$	—
Corporate bonds	—		311,140			—
Treasury bills	—		159,455			—
Asset-backed securities	—		96,560			—
Euro liquidity fund	—		46,499			—
Sovereign bonds	—		30,883			—
Agency bonds	—		13,242			—
Municipal bonds	—		7,750			—
Cash flow hedge forward contracts	—		43			—
Economic hedge forward contracts	—		1			—
Liabilities:
Economic hedge forward contracts	—		(11		)	—
Contingent consideration liabilities	—		—			(4,173		)

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, 2014	$	—
Contingent consideration resulting from Manatee acquisition	3,790
Fair value adjustment to Manatee contingent consideration	(790		)
Balance as of December 31, 2015	3,000
Payment of Manatee contingent consideration	(337		)
Fair value adjustment to Manatee contingent consideration	(463		)
Contingent consideration resulting from EnShape acquisition	1,362
Contingent consideration resulting from Chiaro acquisition	611
Balance as of December 31, 2016	$	4,173