Postretirement Benefits - Schedule of Information Regarding the SERP (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Retirement Benefits [Abstract]
Premiums paid for insurance coverage	$ 0	$ 443
Total investments:
COLI	58,505		$ 57,210
Exchange traded funds	107,804		98,314
Total investments of SERP	$ 166,309		$ 155,524