Pension and Severance Plans (Tables)

3 Months Ended

Mar. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Components of net periodic pension cost

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

	For the Three Months Ended March 31,
	2014			2013
	(In thousands)
Service cost	$	1,424		$	1,474
Interest cost	779			775
Expected return on plan assets	(766		)	(911		)
Amortization of transition obligation	75			2
Amortization of prior service cost	49			49
Recognized actuarial loss	17			33
Net periodic pension cost	1,578			1,422

Schedule of severance obligation

The balance of our Korean severance obligation consists of the following:

	March 31, 2014		December 31, 2013
	(In thousands)
Current (Accrued expenses)	$	11,414	$	11,197
Non-current (Pension and severance obligations)	135,552		133,935
Total Korean severance obligation	$	146,966	$	145,132