Accumulated Other Comprehensive Income (AOCI) (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 873,967
Other comprehensive income/(loss) before reclassifications, net of tax	7,201	$ (15,782)
Interest expense related to swaps reclassified to the Consolidated Statements of Income, net of tax	1,266	1,095
Pension and postretirement liability adjustments reclassified to Consolidated Statements of Income, net of tax	(105)	(7)
Net current period other comprehensive income	8,362	(14,694)
Ending balance	860,220
Accumulated items of other comprehensive income
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(145,984)	(132,408)
Ending balance	(137,622)	(147,102)
Translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(105,880)	(83,203)
Other comprehensive income/(loss) before reclassifications, net of tax	(1,730)	(15,955)
Interest expense related to swaps reclassified to the Consolidated Statements of Income, net of tax	0	0
Pension and postretirement liability adjustments reclassified to Consolidated Statements of Income, net of tax	0	0
Net current period other comprehensive income	(1,730)	(15,955)
Ending balance	(107,610)	(99,158)
Pension and postretirement liability adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(38,490)	(39,661)
Other comprehensive income/(loss) before reclassifications, net of tax	179	516
Interest expense related to swaps reclassified to the Consolidated Statements of Income, net of tax	0	0
Pension and postretirement liability adjustments reclassified to Consolidated Statements of Income, net of tax	(105)	(7)
Net current period other comprehensive income	74	509
Ending balance	(38,416)	(39,152)
Derivative valuation adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,614)	(9,544)
Other comprehensive income/(loss) before reclassifications, net of tax	8,752	(343)
Interest expense related to swaps reclassified to the Consolidated Statements of Income, net of tax	1,266	1,095
Pension and postretirement liability adjustments reclassified to Consolidated Statements of Income, net of tax	0	0
Net current period other comprehensive income	10,018	752
Ending balance	$ 8,404	$ (8,792)