Pension and Severance Plans (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Components of net periodic pension cost

The components of net periodic pension cost for these defined benefit pension plans are as follows:

	For the Three Months Ended March 31,
	2016			2015
	(In thousands)
Service cost	$	8,170		$	1,219
Interest cost	904			766
Expected return on plan assets	(947		)	(856		)
Amortization of prior service cost	9			9
Recognized actuarial loss	24			21
Net periodic pension cost	$	8,160		$	1,159