Nonpension Postretirement Benefits (Pre-tax Amounts Recognized in Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 12,929	$ 7,698
Prior service cost	(1,183)	(1,044)
Total cost (credit)	11,746	6,654
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	12,959	7,760
Prior service cost	(1,183)	(1,044)
Total cost (credit)	11,776	6,716
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	(30)	(62)
Prior service cost	0	0
Total cost (credit)	$ (30)	$ (62)