Other Non-Operating Income (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Other Nonoperating Income (Expense) [Abstract]
Gain on sale of businesses	$ 12,232	$ 753	$ 13,232	$ 1,698
Gain on cost method investments	1,273	0	3,104	0
Gain (loss) on sale of cost method investments	46	(51)	831	1,024
Foreign currency gain (loss), net	1,604	(478)	100	(1,525)
Gain on sale of investments in affiliates	0	0	15	604
Other gain, net	639	952	1,595	2,251
Total Other Non-Operating Income	15,794	1,176	18,877	4,052
Equity Securities, FV-NI, Realized Gain (Loss)	$ 9,132	$ (4,838)	$ 5,475	$ (10,605)