v3.26.1
Employee Benefit Plans - Schedule of Net Periodic Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Pension Benefits    
Components of Net Periodic Benefits Cost:    
Service cost $ 752 $ 774
Interest cost 2,713 2,706
Expected return on plan assets (3,554) (3,183)
Amortization of prior service cost 109 108
Amortization of actuarial (gain) loss (481) 0
Net periodic benefits costs under accounting standards (461) 405
Other Postretirement Benefits    
Components of Net Periodic Benefits Cost:    
Service cost 27 27
Interest cost 19 24
Expected return on plan assets (179) (161)
Amortization of prior service cost 0 0
Amortization of actuarial (gain) loss (71) (291)
Net periodic benefits costs under accounting standards (204) (401)
SERP    
Components of Net Periodic Benefits Cost:    
Service cost 202 181
Interest cost 506 485
Expected return on plan assets 0 0
Amortization of prior service cost 0 0
Amortization of actuarial (gain) loss 0 0
Net periodic benefits costs under accounting standards $ 708 $ 666