Pensions and Other Postretirement Benefit Plans (Schedule of Amounts That Will Be Amortized from Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss	$ 2,678
Prior service cost/(benefit)	50
Total	2,728
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss	3,338
Prior service cost/(benefit)	(4,488)
Total	$ (1,150)