XML 25 R15.htm IDEA: XBRL DOCUMENT v3.22.1
Pension and Other Postretirement Benefits
 3 Months Ended
Mar. 31, 2022
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits
Components of net periodic benefit cost were as follows: 
 Pension BenefitsPostretirement Benefits
 Three months ended March 31,
(in thousands)2022202120222021
Components of net periodic benefit cost    
Service cost$2,007 $2,135 $160 $162 
Interest cost2,234 1,951 84 75 
Expected return on plan assets(1,871)(2,547)— — 
Settlement expense— 1,419 — — 
Amortization of net loss (gain)935 1,421 (152)(65)
Amortization of prior service cost (credit)69 71 (34)(34)
Net periodic benefit cost$3,374 $4,450 $58 $138 
The non-service cost components of net periodic benefit cost are included in other expense, net in the unaudited condensed consolidated statements of operations.