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Pension Benefits (Tables)
3 Months Ended
Mar. 28, 2020
Pension Benefits  
Schedule of components of net periodic pension costs Net periodic pension cost for our four company-sponsored defined benefit pension plans for the first quarter of 2020 and 2019 includes the following components (in thousands):

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Thirteen Weeks Ended

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March 28,

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March 30,

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2020

    

2019

Service cost—benefits earned during the period

$

2,467

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$

1,937

Interest cost on projected benefit obligation

 

1,377

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1,442

Expected return on plan assets

 

(2,229)

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(1,914)

Amortization of unrecognized prior service cost

 

—

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—

Amortization of unrecognized loss

 

400

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215

Net periodic pension cost

$

2,015

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$

1,680