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Retirement and Benefit Plans (Notes)
 3 Months Ended
Mar. 31, 2021
Retirement Benefits [Abstract]  
Retirement and Benefit Plans Retirement and Benefit Plans
 
    The following table presents the pension benefit costs:
 
 Three Months Ended
March 31
 20212020
 (thousands)
Service cost$— $168 
Interest cost24 1,473 
Expected return on plan assets— (1,374)
Amortization of actuarial (gain) loss(5)202 
Plan settlement loss— 86 
Net periodic benefit expense$19 $555 
     
Service cost is recorded in the same income statement line items as other employee compensation costs arising from services rendered, and the other components of net periodic benefit expense are recorded in "Pension expense (excluding service costs)" in our Consolidated Statements of Operations.

    During the three months ended March 31, 2021, we paid $0.1 million in cash to the nonqualified pension plan participants. For the remainder of 2021, we expect to make approximately $0.3 million in cash payments to our nonqualified pension plan participants.