Shareholders' Equity Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,228,887	$ 1,194,143	$ 1,191,556	$ 1,133,100	$ 1,186,752	$ 1,142,759	$ 1,191,556	$ 1,142,759
Total other comprehensive income (loss), net of tax	(15,118)	1,833	7,119	(26,116)	(20,422)	52,815	(6,166)	6,277
Ending balance	1,257,730	1,228,887	1,194,143	1,117,173	1,133,100	1,186,752	1,257,730	1,117,173
Parent [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	1,205,124	1,171,282	1,168,473	1,110,110	1,160,080	1,116,077	1,168,473	1,116,077
Total other comprehensive income (loss), net of tax	(15,118)	1,833	7,119	(26,116)	(20,422)	52,815
Ending balance	1,237,730	$ 1,205,124	1,171,282	1,093,828	$ 1,110,110	1,160,080	1,237,730	1,093,828
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(83,193)			(111,766)	(83,193)	(111,766)
OCI before reclassifications							(5,844)	(55,716)
Amounts reclassified from AOCI							0	57,321
Total other comprehensive income (loss), net of tax							(5,844)	1,605
Ending balance	(89,037)			(110,161)			(89,037)	(110,161)
Net Unrealized Gain (Loss) on Derivative Instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(210)			(210)	(210)	(210)
OCI before reclassifications							0	0
Amounts reclassified from AOCI							0	0
Total other comprehensive income (loss), net of tax							0	0
Ending balance	(210)			(210)			(210)	(210)
Net Unrealized Gain (Loss) on Nonderivative Instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(14,380)			(14,380)	(14,380)	(14,380)
OCI before reclassifications							0	0
Amounts reclassified from AOCI							0	0
Total other comprehensive income (loss), net of tax							0	0
Ending balance	(14,380)			(14,380)			(14,380)	(14,380)
Pension Benefit Obligation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			3,109			(21,742)	3,109	(21,742)
OCI before reclassifications							0	4,183
Amounts reclassified from AOCI							(322)	489
Total other comprehensive income (loss), net of tax							(322)	4,672
Ending balance	2,787			(17,070)			2,787	(17,070)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			$ (94,674)			$ (148,098)	(94,674)	(148,098)
OCI before reclassifications							(5,844)	(51,533)
Amounts reclassified from AOCI							(322)	57,810
Total other comprehensive income (loss), net of tax							(6,166)	6,277
Ending balance	$ (100,840)			$ (141,821)			$ (100,840)	$ (141,821)