XML 54 R18.htm IDEA: XBRL DOCUMENT v3.20.1
Pension and Other Post-Retirement Benefits
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Pension and Other Post-Retirement Benefits Pension and Other Post-Retirement Benefits
 
The following table sets forth the net periodic costs for the defined benefit pension plans and post-retirement healthcare plans for the periods indicated (in thousands):
 
Quarter ended March 31,
 
Pension benefits
 
Other post-retirement benefits
 
2020
 
2019
 
2020
 
2019
Service cost
$
2,098

 
1,274

 
—

 
—

Interest cost
1,714

 
1,827

 
7

 
11

Expected return on plan assets
(3,091
)
 
(2,759
)
 
—

 
—

Amortization of prior service cost
(581
)
 
(581
)
 
—

 
—

Amortization of the net loss
924

 
855

 
5

 
17

Net periodic cost
$
1,064

 
616

 
12

 
28



We anticipate making a contribution to our defined benefit pension plan of $2.0 million to $4.0 million during the year ending December 31, 2020.