Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (80,021)
Other comprehensive income before reclassifications	(10,968)
Interest expense related to swaps reclassified to the Statement of Operations, net of tax	(549)
Pension and postretirement liability adjustments reclassified to Statement of Operations, net of tax	1,004
Net current period other comprehensive income	(10,513)
Ending balance	(90,534)
Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(7,659)
Other comprehensive income before reclassifications	(14,494)
Interest expense related to swaps reclassified to the Statement of Operations, net of tax
Pension and postretirement liability adjustments reclassified to Statement of Operations, net of tax
Net current period other comprehensive income	(14,494)
Ending balance	(22,153)
Pension and Postretirement Liability Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(69,484)
Other comprehensive income before reclassifications	1,225
Interest expense related to swaps reclassified to the Statement of Operations, net of tax
Pension and postretirement liability adjustments reclassified to Statement of Operations, net of tax	1,004
Net current period other comprehensive income	2,229
Ending balance	(67,255)
Derivative Valuation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,878)
Other comprehensive income before reclassifications	2,301
Interest expense related to swaps reclassified to the Statement of Operations, net of tax	(549)
Pension and postretirement liability adjustments reclassified to Statement of Operations, net of tax
Net current period other comprehensive income	1,752
Ending balance	$ (1,126)