Employee Benefits (Details) - Pension Plan - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net periodic benefit cost
Service cost	$ 822	$ 954	$ 2,465	$ 2,863
Interest cost	2,478	2,526	7,435	7,579
Expected return on plan assets	(3,635)	(3,756)	(10,906)	(11,269)
Amortization of prior service credit	(724)	(820)	(2,172)	(2,460)
Amortization of net loss	0	52	0	155
Net periodic benefit cost	$ (1,059)	$ (1,044)	$ (3,178)	$ (3,131)