Defined Benefit Plans

9 Months Ended

Sep. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

Defined Benefit Plans

We maintain defined benefit plans for employees in certain countries outside the United States, including retirement benefit plans required by applicable local law. The plans are valued by independent actuaries using the projected unit credit method. The liabilities correspond to the projected benefit obligations of which the discounted net present value is calculated based on years of employment, expected salary increases, and pension adjustments.

The components of net periodic benefit cost are as follows:

	Three months ended						Nine months ended
	September 30,						September 30,
	2016			2015			2016			2015
Service cost	$	2,113		$	2,380		$	6,211		$	7,241
Interest cost	56			179			172			551
Expected return on plan assets	(167		)	(248		)	(496		)	(756		)
Employee contributions	(448		)	(442		)	(1,203		)	(1,342		)
Amortization	117			313			346			939
Other	—			(821		)	—			(821		)
	$	1,671		$	1,361		$	5,030		$	5,812