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Retirement Plans
 6 Months Ended
Sep. 30, 2018
Retirement Benefits [Abstract]  
Retirement Plans Retirement Plans

The following tables present the components of the Company’s net periodic benefit cost related to its defined benefit pension plans: 

 
 
United States Plans
 
International Plans
Quarter ended
 
Quarter ended
September 30, 2018
 
October 1,
2017
 
September 30, 2018
 
October 1,
2017
Service cost
 
$
—

 
$
—

 
$
252

 
$
256

Interest cost
 
157

 
167

 
457

 
444

Expected return on plan assets
 
(135
)
 
(120
)
 
(535
)
 
(557
)
Amortization and deferral
 
36

 
80

 
304

 
360

Net periodic benefit cost
 
$
58

 
$
127

 
$
478

 
$
503


 
 
United States Plans
 
International Plans
Six months ended
 
Six months ended
September 30, 2018
 
October 1,
2017
 
September 30, 2018
 
October 1,
2017
Service cost
 
$
—

 
$
—

 
$
507

 
$
499

Interest cost
 
316

 
334

 
927

 
876

Expected return on plan assets
 
(257
)
 
(240
)
 
(1,087
)
 
(1,105
)
Amortization and deferral
 
92

 
159

 
616

 
711

Net periodic benefit cost
 
$
151

 
$
253

 
$
963

 
$
981