Other Income and Other Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Other income:
Interest income	$ 2,881	$ 5,996
Investment gain — net	1,792	10,984
Miscellaneous	308	481
Total other income	4,981	17,461
Other expense:
Non-operating costs	(2,462)	(2,229)
Miscellaneous	(278)	(341)
Total other expense	(2,740)	(2,570)
APS
Other income:
Interest income	2,520	5,607
Miscellaneous	125	115
Total other income	2,645	5,722
Other expense:
Non-operating costs	(2,390)	(1,992)
Miscellaneous	(278)	(341)
Total other expense	$ (2,668)	$ (2,333)