Pension Plans

Foreign Defined Benefit Pension Plans

Our subsidiaries in Japan, Korea, Malaysia, the Philippines and Taiwan sponsor defined benefit pension plans. Charges to expense are based upon actuarial analyses. The components of net periodic pension cost for these defined benefit pension plans are as follows:



	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2017			2016			2017			2016
	(In thousands)
Service cost	$	8,445		$	9,024		$	25,215		$	25,684
Interest cost	1,009			925			3,029			2,753
Expected return on plan assets	(1,124		)	(961		)	(3,385		)	(2,864		)
Amortization of prior service cost	—			9			31			26
Recognized actuarial loss	18			24			62			71
Net periodic pension cost	$	8,348		$	9,021		$	24,952		$	25,670

Defined Contribution Pension Plans

We sponsor defined contribution pension plans in Korea, Malaysia, Taiwan and the U.S. The following table summarizes our defined contribution expense:



	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2017		2016		2017		2016
	(In thousands)
Defined contribution expense	$	2,230	$	1,939	$	8,009	$	7,106