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Pension Benefits (Tables)
3 Months Ended
Mar. 31, 2020
Pension Benefits  
Summary of pension costs

Three Months Ended

(Amounts in thousands)

    

March 31, 2020

    

March 31, 2019

Service cost

$

325

$

338

Interest cost

 

1,623

 

2,002

Expected return on plan assets

 

(3,279)

 

(3,330)

Amortization of net actuarial loss

 

257

 

191

Total net periodic benefit

$

(1,074)

$

(799)

Schedule of weighted average assumptions used to determine net cost

Weighted-Average Assumptions Used To Determine Net Cost

Three Months Ended

    

March 31, 2020

March 31, 2019

Discount rate

3.00

%  

4.05

%

Rate of compensation increase

 

N/A

 

N/A

 

Expected return on plan assets

6.50

%  

7.25

%