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Retirement Benefit Plans (Tables)
 3 Months Ended
Mar. 28, 2020
Retirement Benefit Plans [Abstract]  
Significant Disclosures Relating to Benefit Plans
Significant disclosures relating to these benefit plans for the first quarter of fiscal years 2020 and 2019 are as follows:

  
Pension Benefits
  
Postretirement Benefits
 
  
Three Months Ended
  
Three Months Ended
 
  
March 28,
2020
  
March 30,
2019
  
March 28,
2020
  
March 30,
2019
 
Service cost
 
$
266,436
  
$
263,852
  
$
10,855
  
$
8,216
 
Interest cost
  
714,143
   
879,080
   
11,667
   
20,346
 
Expected return on plan assets
  
(1,365,261
)
  
(1,190,330
)
  
(5,589
)
  
(14,481
)
Amortization of prior service cost
  
24,845
   
24,845
   
(2,063
)
  
(1,268
)
Amortization of the net loss
  
325,034
   
290,549
   
(6,377
)
  
(20,507
)
Net periodic benefit cost (benefit)
 
$
(34,803
)
 
$
267,996
  
$
8,493
  
$
(7,694
)
Defined Contribution Plan
The Company made contributions to the plan as follows:

  
For the Three Months Ended
 
  
March 28, 2020
  
March 30, 2019
 
Regular matching contribution
 
$
204,992
  
$
156,267
 
Transitional credit contribution
  
82,127
   
103,524
 
Non-discretionary contribution
  
567,657
   
587,041
 
Total contributions made for the period
 
$
854,776
  
$
846,832