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Net Periodic Pension (Benefit) Cost
 3 Months Ended
Mar. 28, 2020
Retirement Benefits [Abstract]  
Net Periodic Pension (Benefit) Cost Net Periodic Pension (Benefit) Cost
The following table shows the components of our net periodic pension (benefit) cost:
 
Three Months Ended
 
March 28, 2020
 
March 30, 2019
 
(in thousands)
Service cost
$
—

 
$
113

Interest cost on projected benefit obligation
723

 
1,045

Expected return on plan assets
(1,210
)
 
(1,194
)
Amortization of unrecognized loss
263

 
300

Net periodic pension (benefit) cost
$
(224
)
 
$
264