Pension and Severance Plans (Tables)

6 Months Ended

Jun. 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 June 30,						For the Six Months Ended June 30,
	2013			2012			2013			2012
	(In thousands)
Components of net periodic pension cost and total pension expense:
Service cost	$	1,399		$	1,528		$	2,873		$	3,229
Interest cost	746			802			1,521			1,622
Expected return on plan assets	(883		)	(787		)	(1,794		)	(1,570		)
Amortization of transition obligation	2			2			4			4
Amortization of prior service cost	49			54			98			125
Recognized actuarial loss	33			52			66			103
Net periodic pension cost	1,346			1,651			2,768			3,513
Curtailment loss	—			—			—			1,089
Settlement gain	—			—			—			(100		)
Total pension expense	$	1,346		$	1,651		$	2,768		$	4,502

Schedule of severance obligation

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

	June 30, 2013		December 31, 2012
	(In thousands)
Current (Accrued expenses)	$	9,468	$	9,516
Non-current (Pension and severance obligations)	115,141		116,997
Total Korean severance obligation	$	124,609	$	126,513