Pension Plans and Postretirement Benefit Plan (Tables)

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of components of net periodic benefit cost

Components of net periodic benefit cost for the Company’s pension plans and the postretirement benefit plan are presented in the following table for the three and nine months endedSeptember 30, 2015 and 2014.

	Pension Benefits						Postretirement Benefits
(dollars in thousands)	2015			2014			2015			2014
Three Months Ended September 30,
Service Cost	$	—		$	—		$	182		$	157
Interest Cost	1,186			1,242			74			348
Expected Return on Plan Assets	(1,304		)	(1,275		)	—			—
Amortization of:
Prior Service Credit	—			—			(81		)	(81		)
Net Actuarial Losses (Gains)	443			352			—			(13		)
Net Periodic Benefit Cost	$	325		$	319		$	175		$	411
Nine Months Ended September 30,
Service Cost	$	—		$	—		$	546		$	471
Interest Cost	3,559			3,727			722			1,043
Expected Return on Plan Assets	(3,913		)	(3,825		)	—			—
Amortization of:
Prior Service Credit	—			—			(242		)	(242		)
Net Actuarial Losses (Gains)	1,330			1,055			—			(39		)
Net Periodic Benefit Cost	$	976		$	957		$	1,026		$	1,233