Shareholders' Equity Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Before-tax amount [Abstract]
Foreign currency translation adjustment	$ 7,227,000	$ (6,850,000)
Foreign currency translation adjustment reclassified to net income (loss) on sale of business	0	55,436,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax	0	4,205,000
Net defined benefit plan (gain) loss reclassified to net income (loss)	(106,000)	74,000
Total other comprehensive income (loss), before tax	7,121,000	52,865,000
Tax (provision) benefit [Abstract]
Foreign currency translation adjustment	(2,000)	(41,000)
Foreign currency translation adjustment reclassified to net income (loss) on sale of business	0	0
Net unrealized gain (loss) on defined benefit plans	0	(9,000)
Net defined benefit plan (gain) loss reclassified to net income (loss)	0	0
Total other comprehensive income (loss) tax (provision) benefit	(2,000)	(50,000)
Net-of-tax amount [Abstract]
Foreign currency translation adjustment	7,225,000	(6,891,000)
Foreign currency translation adjustment reclassified to net income (loss) on sale of business	0	55,436,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	0	4,196,000
Net defined benefit plan (gain) loss reclassified to net income (loss)	(106,000)	74,000
Total other comprehensive income (loss), net of tax	$ 7,119,000	$ 52,815,000