Pension and Severance Plans (Tables)

9 Months Ended

Sep. 30, 2013

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 September 30,						For the Nine Months Ended September 30,
	2013			2012			2013			2012
	(In thousands)
Components of net periodic pension cost and total pension expense:
Service cost	$	1,500		$	1,561		$	4,373		$	4,789
Interest cost	842			817			2,363			2,439
Expected return on plan assets	(852		)	(800		)	(2,646		)	(2,370		)
Amortization of transition obligation	3			2			7			6
Amortization of prior service cost	50			54			148			179
Recognized actuarial loss	33			51			99			154
Net periodic pension cost	1,576			1,685			4,344			5,197
Curtailment (gain) loss	(148		)	—			(148		)	1,089
Settlement gain	(209		)	—			(209		)	(100		)
Total pension expense	$	1,219		$	1,685		$	3,987		$	6,186

Schedule of severance obligation

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

	September 30, 2013		December 31, 2012
	(In thousands)
Current (Accrued expenses)	$	10,411	$	9,516
Non-current (Pension and severance obligations)	127,590		116,997
Total Korean severance obligation	$	138,001	$	126,513