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Benefit Plans (Tables)
6 Months Ended
Jun. 29, 2018
Defined Benefit Plan [Abstract]  
Schedule of Net Defined Benefit Cost
Net defined benefit cost attributable to employees of the AS&O Product Line located in France and Germany are reported within discontinued operations.
The following tables set forth the components of the Company’s net periodic expense relating to retirement benefit plans (in thousands):
 
Three Months Ended
 
Six Months Ended
 
June 29,
2018
 
June 30,
2017
 
June 29,
2018
 
June 30,
2017
Service cost
$
122

 
$
115

 
$
249

 
$
225

Interest cost
45

 
40

 
91

 
78

Amortization of net loss
16

 
19

 
32

 
36

Expected return on plan assets
(5
)
 
(6
)
 
(9
)
 
(10
)
Net defined benefit cost
178

 
168

 
363

 
329

Less: Discontinued operations
109

 
101

 
223

 
198

Net defined benefit cost - continuing operations
$
69

 
$
67

 
$
140

 
$
131