Accumulated Other Comprehensive Income (AOCI) (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (158,844)	$ (107,767)
Other comprehensive income/(loss) before reclassifications	10,973	(36,358)
Pension/postretirement plan remeasurements, net of tax	(105)
Interest expense related to swaps reclassified to the Statement of Income, net of tax	174	296
Pension and postretirement liability adjustments reclassified to Statement of Income, net of tax	116	257
Net current period other comprehensive income/(loss)	11,158	(35,805)
Ending balance	(147,686)	(143,572)
Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(108,655)	(55,240)
Other comprehensive income/(loss) before reclassifications	$ 13,114	$ (37,413)
Pension/postretirement plan remeasurements, net of tax
Interest expense related to swaps reclassified to the Statement of Income, net of tax
Pension and postretirement liability adjustments reclassified to Statement of Income, net of tax
Net current period other comprehensive income/(loss)	$ 13,114	$ (37,413)
Ending balance	(95,541)	(92,653)
Pension and Postretirement Liability Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(48,725)	(51,666)
Other comprehensive income/(loss) before reclassifications	(373)	$ 1,730
Pension/postretirement plan remeasurements, net of tax	$ (105)
Interest expense related to swaps reclassified to the Statement of Income, net of tax
Pension and postretirement liability adjustments reclassified to Statement of Income, net of tax	$ 116	$ 257
Net current period other comprehensive income/(loss)	(362)	1,987
Ending balance	(49,087)	(49,679)
Derivative Valuation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,464)	(861)
Other comprehensive income/(loss) before reclassifications	$ (1,768)	$ (675)
Pension/postretirement plan remeasurements, net of tax
Interest expense related to swaps reclassified to the Statement of Income, net of tax	$ 174	$ 296
Pension and postretirement liability adjustments reclassified to Statement of Income, net of tax
Net current period other comprehensive income/(loss)	$ (1,594)	$ (379)
Ending balance	$ (3,058)	$ (1,240)