Postretirement Benefits - Schedule of Information Regarding the SERP (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Retirement Benefits [Abstract]
Premiums paid for insurance coverage	$ 443	$ 443
Total investments:
COLI	56,423		$ 55,185
Exchange traded funds	92,857		86,156
Total investments of SERP	$ 149,280		$ 141,341