v3.26.1
Components of Net Periodic Benefit Cost - Schedule of Net Benefit Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Pension Plan    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost $ 887 $ 1,017
Interest cost 3,133 3,293
Expected return on plan assets (9,508) (8,607)
Prior service cost 0 0
Net loss 0 0
Net periodic (income) benefit cost (5,488) (4,297)
RIM Plan    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 44 52
Interest cost 162 169
Expected return on plan assets 0 0
Prior service cost 0 0
Net loss 0 0
Net periodic (income) benefit cost 206 221
Post-retirement Plan    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 50 51
Interest cost 260 287
Expected return on plan assets 0 0
Prior service cost 0 0
Net loss 0 0
Net periodic (income) benefit cost 310 338
Split-Dollar Life Insurance    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 47 57
Interest cost 231 216
Expected return on plan assets 0 0
Prior service cost 10 13
Net loss 0 (22)
Net periodic (income) benefit cost $ 288 $ 264