Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (49,498)
Other comprehensive income before reclassifications	(5,448)
Interest expense related to swaps reclassified to the Statement of Operations, net of tax	292
Pension and postretirement liability adjustments reclassified to Statement of Operations, net of tax	131
Net current period other comprehensive income	(5,025)
Ending balance	(54,523)
Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(138)
Other comprehensive income before reclassifications	(5,599)
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	(5,599)
Ending balance	(5,737)
Pension and Postretirement Liability Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(48,383)
Other comprehensive income before reclassifications	371
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	131
Net current period other comprehensive income	502
Ending balance	(47,881)
Derivative Valuation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(977)
Other comprehensive income before reclassifications	(220)
Interest expense related to swaps reclassified to the Statement of Operations, net of tax	292
Pension and postretirement liability adjustments reclassified to Statement of Operations, net of tax
Net current period other comprehensive income	72
Ending balance	$ (905)