Postretirement Benefits - Schedule of Information Regarding the SERP (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Retirement Benefits [Abstract]
Premiums paid for insurance coverage	$ 443	$ 443
Total investments:
Company owned life insurance	54,458		$ 54,681
Exchange traded funds	79,467		71,258
Total investments of SERP	$ 133,925		$ 125,939