Pension Benefits and Other Postretirement Benefit Plans

6 Months Ended

Jun. 30, 2015

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Pension Benefit and Other Postretirement Benefit Plans

Pension Benefits and Other Postretirement Benefit Plans

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost (income) for the periods indicated were:

(Dollars in thousands)	Pension Benefits												Retirement Health and Life Insurance Benefits
	Three Months Ended						Six Months Ended						Three Months Ended				Six Months Ended
Change in benefit obligation:	June 30, 2015			June 30, 2014			June 30, 2015			June 30, 2014			June 30, 2015		June 30, 2014		June 30, 2015		June 30, 2014
Service cost	$	—		$	—		$	—		$	—		$	150	$	159	$	300	$	319
Interest cost	1,838			1,990			3,677			4,008			75		84		150		167
Expected return on plan assets	(2,771		)	(3,228		)	(5,542		)	(6,455		)	—		—		—		—
Amortization of net loss	413			160			826			343			—		30		—		61
Settlement charge	—			(33		)	—			77			—		—		—		—
Net periodic benefit cost (income)	$	(520	)	$	(1,111	)	$	(1,039	)	$	(2,027	)	$	225	$	273	$	450	$	547

In the first quarter of 2015, as part of the acquisition of Arlon, we acquired the Hourly Employees Pension Plan of Arlon, LLC, Microwave Materials and Silicone Technologies Divisions, Bear, Delaware. This plan covers Arlon union employees and was frozen to new participants and accumulating benefits in 2006. As of the acquisition date, January 22, 2015, the funded status of the plan was a liability of approximately $2.0 million. We have recorded this as part of our long term pension liability within our condensed consolidated statements of financial position.

In the first quarter of 2014, we made a one-time cash payment to a former employee of $0.8 million in accordance with the provisions of his retirement contract related to his participation in the Company's Pension Restoration Plan. This payment resulted in a settlement charge of approximately $0.1 million, which was recognized in the first quarter of 2014.

Employer Contributions

In the second quarters of 2015 and 2014, we made voluntary contributions of $6.5 million and $6.5 million, respectively to our qualified defined benefit pension plans. These are the only amounts contributed in the first six months of 2015 and 2014.

We did not make any contributions to our non-qualified defined benefit pension plan for the six months ended June 30, 2015 or the three months ended June 30, 2014. We made $0.8 million in contributions to our non-qualified defined benefit pension plan for the quarter ended March 31, 2014.