Fair Value Measurements (Tables)

9 Months Ended

Oct. 01, 2017

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes the financial assets and liabilities required to be measured at fair value on a recurring basis as of October 1, 2017 (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	$	6,700	$	—	$	—
Corporate bonds	—		311,509		—
Treasury bills	—		133,786		—
Asset-backed securities	—		106,909		—
Euro liquidity fund	—		52,312		—
Sovereign bonds	—		28,971		—
Agency bonds	—		13,245		—
Municipal bonds	—		13,030		—
Economic hedge forward contracts	—		13		—
Liabilities:
Economic hedge forward contracts	—		13		—
Contingent consideration liabilities	—		—		3,673

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

The following table summarizes the activity for the Company's liability measured at fair value using Level 3 inputs for the nine-month period ended October 1, 2017 (in thousands):

Balance as of December 31, 2016	$	4,173
Payment of EnShape contingent consideration	(1,401		)
Payment of Manatee contingent consideration	(525		)
Contingent consideration resulting from GVi acquisition	1,299
Fair value adjustment to Manatee contingent consideration	(275		)
Fair value adjustment to Chiaro contingent consideration	185
Fair value adjustment to GVi contingent consideration	178
Foreign exchange rate changes	39
Balance as of October 1, 2017	$	3,673