Other Income and Other Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other income:
Interest income	$ 6,368	$ 9,515	$ 19,324	$ 21,946
Gain on sale of BCE (Note 16)	0	6,423	22,988	6,423
Miscellaneous	406	3	922	55
Total other income	6,774	15,941	43,234	28,424
Other expense:
Non-operating costs	(1,362)	(3,322)	(9,551)	(9,319)
Investment losses — net	0	(870)	(1,242)	(2,364)
Miscellaneous	(2,651)	(2,780)	(3,787)	(4,233)
Total other expense	(4,013)	(6,972)	(14,580)	(15,916)
APS
Other income:
Interest income	4,921	8,717	16,319	19,432
Miscellaneous	(42)	3	6	55
Total other income	4,879	8,720	16,325	19,487
Other expense:
Non-operating costs	(2,896)	(3,053)	(7,548)	(8,352)
Miscellaneous	(450)	(580)	(1,586)	(2,033)
Total other expense	$ (3,346)	$ (3,633)	$ (9,134)	$ (10,385)