Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 27, 2020

Retirement Benefit Plans

Schedule of Significant Disclosures Relating to Benefit Plans

	Pension Benefits
	Three Months Ended						Six Months Ended
	June 27, 2020			June 29, 2019			June 27, 2020			June 29, 2019
Service cost	$	266,434		$	263,854		$	532,870		$	527,706
Interest cost		714,142			879,080			1,428,285			1,758,160
Expected return on plan assets		(1,365,262	)		(1,190,331	)		(2,730,523	)		(2,380,661	)
Amortization of prior service cost		24,845			24,845			49,690			49,690
Amortization of the net loss		325,034			290,550			650,068			581,099
Net periodic benefit cost (benefit)	$	(34,807	)	$	267,998		$	(69,610	)	$	535,994

	Postretirement Benefits
	Three Months Ended						Six Months Ended
	June 27, 2020			June 29, 2019			June 27, 2020			June 29, 2019
Service cost	$	10,855		$	8,216		$	21,710		$	16,432
Interest cost		11,667			20,346			23,334			40,692
Expected return on plan assets		(5,589	)		(14,482	)		(11,178	)		(28,963	)
Amortization of prior service cost		(2,063	)		(1,268	)		(4,126	)		(2,536	)
Amortization of the net loss		(6,377	)		(20,507	)		(12,754	)		(41,014	)
Net periodic benefit cost (benefit)	$	8,493		$	(7,695	)	$	16,986		$	(15,389	)

Schedule of Defined Contribution Plan

	Three Months Ended				Six Months Ended
	June 27, 2020		June 29, 2019		June 27, 2020		June 29, 2019
Regular matching contribution	$	168,529	$	136,796	$	373,521	$	293,063
Transitional credit contribution		64,223		74,852		146,349		178,376
Non-discretionary contribution		12,390		18,088		580,048		605,129
Total contributions for the period	$	245,142	$	229,736	$	1,099,918	$	1,076,568