Accumulated Other Comprehensive Income (AOCI) (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at end of the period	$ 877,605	$ 819,865	$ 702,689
Pension settlement expense, net of tax	26,198
Balance at end of the period	867,543	877,605	819,865
Translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at end of the period	(105,880)	(83,203)	(122,852)
Other comprehensive income/(loss) before reclassifications	(40,971)	(22,677)	39,649
Pension settlement expense, net of tax	0
Pension/postretirement settlements and curtailments, net of tax			0
Pension/postretirement plan remeasurement, net of tax	0	0	0
Interest expense related to swaps reclassified to the Statements of Income, net of tax	0	0	0
Pension and postretirement liability adjustments reclassified to Statements of Income, net of tax	0	0	0
Net current period other comprehensive income	(40,971)	(22,677)	39,649
Balance at end of the period	(146,851)	(105,880)	(83,203)
Pension and postretirement liability adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at end of the period	(38,490)	(39,661)	(49,994)
Other comprehensive income/(loss) before reclassifications	0	1,869	(722)
Pension settlement expense, net of tax	26,198
Pension/postretirement settlements and curtailments, net of tax			283
Pension/postretirement plan remeasurement, net of tax	(2,663)	(796)	10,390
Interest expense related to swaps reclassified to the Statements of Income, net of tax	0	0	0
Pension and postretirement liability adjustments reclassified to Statements of Income, net of tax	(828)	98	382
Net current period other comprehensive income	22,707	1,171	10,333
Balance at end of the period	(15,783)	(38,490)	(39,661)
Derivative valuation adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at end of the period	(1,614)	(9,544)	(3,135)
Other comprehensive income/(loss) before reclassifications	18,971	2,812	(9,363)
Pension settlement expense, net of tax	0
Pension/postretirement settlements and curtailments, net of tax			0
Pension/postretirement plan remeasurement, net of tax	0	0	0
Interest expense related to swaps reclassified to the Statements of Income, net of tax	350	5,118	2,954
Pension and postretirement liability adjustments reclassified to Statements of Income, net of tax	0	0	0
Net current period other comprehensive income	19,321	7,930	(6,409)
Balance at end of the period	17,707	(1,614)	(9,544)
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at end of the period	(145,984)	(132,408)	(175,981)
Other comprehensive income/(loss) before reclassifications	(22,000)	(17,996)	29,564
Pension settlement expense, net of tax	26,198
Pension/postretirement settlements and curtailments, net of tax			283
Pension/postretirement plan remeasurement, net of tax	(2,663)	(796)	10,390
Interest expense related to swaps reclassified to the Statements of Income, net of tax	350	5,118	2,954
Pension and postretirement liability adjustments reclassified to Statements of Income, net of tax	(828)	98	382
Net current period other comprehensive income	1,057	(13,576)	43,573
Balance at end of the period	$ (144,927)	$ (145,984)	$ (132,408)