Shareholders' Equity Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,194,143	$ 1,191,556	$ 1,186,752	$ 1,142,759	$ 1,191,556	$ 1,142,759
Total other comprehensive income (loss), net of tax	1,833	7,119	(20,422)	52,815	8,952	32,393
Ending balance	1,228,887	1,194,143	1,133,100	1,186,752	1,228,887	1,133,100
Parent [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	1,171,282	1,168,473	1,160,080	1,116,077	1,168,473	1,116,077
Total other comprehensive income (loss), net of tax	1,833	7,119	(20,422)	52,815
Ending balance	1,205,124	1,171,282	1,110,110	1,160,080	1,205,124	1,110,110
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					9,165	(27,519)
Amounts reclassified from AOCI					0	55,436
Total other comprehensive income (loss), net of tax					9,165	27,917
Ending balance	(74,028)		(83,849)		(74,028)	(83,849)
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	4,189
Amounts reclassified from AOCI					(213)	287
Total other comprehensive income (loss), net of tax					(213)	4,476
Ending balance	2,896		(17,266)		2,896	(17,266)
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					9,165	(23,330)
Amounts reclassified from AOCI					(213)	55,723
Total other comprehensive income (loss), net of tax					8,952	32,393
Ending balance	$ (85,722)		$ (115,705)		$ (85,722)	$ (115,705)