Pension and Severance Benefits (Tables)

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

Pension and severance expense consists of the following:

	Domestic Plans
(In thousands)	2014			2013			2012
Defined benefit and severance plans:
Service cost	$	464		$	465		$	363
Interest on projected benefit obligation	993			892			1,086
Expected return on plan assets	(1,313		)	(1,294		)	(1,477		)
Recognized actuarial loss	411			495			374
	555			558			346
Defined contribution plans	5,138			4,803			8,544
Total pension and severance expense	$	5,693		$	5,361		$	8,890
	Foreign Plans
(In thousands)	2014			2013			2012
Defined benefit and severance plans:
Service cost	$	6,956		$	6,992		$	6,783
Interest on projected benefit obligation	4,661			4,293			3,903
Expected return on plan assets	(27		)	(33		)	(32		)
Recognized actuarial loss	650			734			570
Amortization of prior service cost	128			128			128
	12,368			12,114			11,352
Defined contribution plans	438			461			466
Total pension and severance expense	$	12,806		$	12,575		$	11,818

Schedule of Projected Benefit Obligation

Financial information with respect to our domestic and foreign defined benefit pension and severance plans is as follows:

	Domestic Plans Year Ended December 31,						Foreign Plans Year Ended December 31,
(In thousands)	2014			2013			2014			2013
Fair value of plan assets at beginning of year	$	21,373		$	19,468		$	5,559		$	5,176
Actual return on plan assets	872			3,938			23			26
Employer contributions	985			839			6,739			6,538
Benefits paid	(2,718		)	(2,872		)	(6,276		)	(6,228		)
Foreign exchange	—			—			(200		)	47
Fair value of plan assets at end of year	$	20,512		$	21,373		$	5,845		$	5,559
Projected benefit obligation at beginning of year	$	23,039		$	27,333		$	67,811		$	60,685
Service and interest cost	1,457			1,357			11,617			11,290
Actuarial loss (gain)	4,279			(2,779		)	4,813			1,856
Benefits paid	(2,718		)	(2,872		)	(6,276		)	(6,228		)
Foreign exchange	—			—			(747		)	208
Projected benefit obligation at end of year	$	26,057		$	23,039		$	77,218		$	67,811
Plan assets less than projected benefit obligation	$	(5,545	)	$	(1,666	)	$	(71,373	)	$	(62,252	)

Schedule of Assumptions Used

The following weighted-average assumptions were used to determine the net periodic benefit cost for our domestic pension plans and foreign pension and severance plans:

	Domestic Plans December 31,				Foreign Plans December 31,
	2014		2013		2014		2013
Discount rate	4.40	%	3.50	%	6.90	%	6.80	%
Rate of compensation increase	n/a		5.00	%	5.00	%	5.00	%
Long-term rate of return on plan assets	7.00	%	7.00	%	0.40	%	0.70	%

The following weighted-average assumptions were used to determine the projected benefit obligations for our domestic pension plans and foreign pension and severance plans:

	Domestic Plans December 31,				Foreign Plans December 31,
	2014		2013		2014		2013
Discount rate	3.70	%	4.40	%	5.90	%	6.90	%
Rate of compensation increase1	—	%	—	%	5.00	%	5.00	%

^1.  During 2013, the last active participant in the domestic defined benefit plan retired and therefore, the rate of compensation increase is no longer applicable.

Schedule of Net Periodic Benefit Cost Not Yet Recognized

Included in "AOCI" in the Consolidated Balance Sheets are the following amounts that have not yet been recognized in net periodic pension cost:

	December 31,
(In thousands)	2014		2013
Unrecognized actuarial losses	$	26,682	$	18,438
Unrecognized prior service costs	564		692

Schedule of Allocation of Plan Assets

The weighted-average asset allocations of our domestic pension plans and foreign pension and severance plans by asset category are as follows:

	Domestic Plans December 31,				Foreign Plans December 31,
	2014		2013		2014		2013
Asset category:
Equity securities	19	%	79	%	7	%	7	%
Fixed income securities	77	%	20	%	52	%	52	%
Cash and equivalents	4	%	1	%	41	%	41	%

Schedule of Changes in Fair Value of Plan Assets [Table Text Block]

The fair values of assets of our pension plans were as follows:

			Fair Value Measurements Using
(In thousands)	Total		Level 1		Level 2		Level 3
December 31, 2014
Domestic pension plans:
Money market accounts	$	816	$	816	$	—	$	—
Mutual funds:
Domestic equity	849		849		—		—
International equity	1,423		1,423		—		—
Domestic fixed income	969		969		—		—
Domestic closed end	1,643		1,643		—		—
Large-cap common stock	—		—		—		—
Fixed income securities:
Corporate bonds	1,588		—		1,588		—
Mortgage/asset-backed securities	995		—		995		—
Government bonds	12,229		—		12,229		—
Total assets of domestic pension plans	20,512		5,700		14,812		—
Foreign pension and severance plans:
Cash and equivalents	2,395		2,395		—		—
Equity	395		395		—		—
Fixed income securities	3,055		—		3,055		—
Total assets of foreign pension and severance plans	5,845		2,790		3,055		—
Total assets of pension and severance plans	$	26,357	$	8,490	$	17,867	$	—
December 31, 2013
Domestic pension plans:
Money market accounts	$	297	$	297	$	—	$	—
Mutual funds:
Domestic equity	5,183		5,183		—		—
International equity	3,177		3,177		—		—
Domestic fixed income	1,489		1,489		—		—
Domestic closed end	3,754		3,754		—		—
Large-cap common stock	4,712		4,712		—		—
Fixed income securities:
Corporate bonds	1,427		—		1,427		—
Mortgage/asset-backed securities	1,023		—		1,023
Other	311		—		311		—
Total assets of domestic pension plans	21,373		18,612		2,761		—
Foreign pension and severance plans:
Cash and equivalents	2,282		2,282		—		—
Equity	383		383		—		—
Fixed income securities	2,894		—		2,894		—
Total assets of foreign pension and severance plans	5,559		2,665		2,894		—
Total assets of pension and severance plans	$	26,932	$	21,277	$	5,655	$	—

Schedule of Expected Benefit Payments

Expected benefit payments for our domestic defined benefit pension plans and foreign pension and severance plans are as follows:

(In thousands)	Domestic Plans		Foreign Plans
2015	$	2,081	$	9,141
2016	2,044		8,953
2017	2,000		8,679
2018	1,963		8,754
2019	1,911		8,634
2020-2024	8,685		42,876