RETIREMENT BENEFIT PLANS, Assumptions Used to Determine the Projected Benefit Obligations and Estimated Benefit Payments (Details)	12 Months Ended
	Dec. 28, 2019 USD ($) Plan	Dec. 29, 2018 USD ($) Plan
Estimated future benefit payments to participants [Abstract]
Period of horizon for various asset classes used in calculating expected long term rates of return	10 years
Pension Benefit [Member]
Assumptions used to determine net periodic benefit obligations [Abstract]
Accumulated benefit obligation for all qualified and nonqualified defined benefit pension plans	$ 102,991,053	$ 91,533,200
Pension plans with projected benefit obligation and accumulated benefit obligation in excess of plan assets [Abstract]
Number of plans | Plan	5	5
Projected benefit obligation	$ 102,991,043	$ 91,533,200
Accumulated benefit obligation	102,991,043	91,533,200
Fair value of plan assets	74,359,558	66,170,875
Net amount recognized in accrued benefit liability	(28,631,485)	$ (25,362,325)
Estimated future benefit payments to participants [Abstract]
2020	4,300,000
2021	4,500,000
2022	4,700,000
2023	4,900,000
2024	5,100,000
2025 through 2029	28,000,000
Contributions expected to be made by Company in next fiscal year	$ 2,700,000
Pension Benefit [Member] | Minimum [Member]
Assumptions used to determine net periodic benefit obligations [Abstract]
Discount rate	3.18%	4.20%
Pension Benefit [Member] | Maximum [Member]
Assumptions used to determine net periodic benefit obligations [Abstract]
Discount rate	3.23%	4.22%
Other Postretirement Benefit [Member]
Assumptions used to determine net periodic benefit obligations [Abstract]
Discount rate	3.35%	4.26%
Pension plans with projected benefit obligation and accumulated benefit obligation in excess of plan assets [Abstract]
Net amount recognized in accrued benefit liability	$ (1,007,146)	$ (648,635)
Estimated future benefit payments to participants [Abstract]
2020	50,000
2021	49,000
2022	50,000
2023	51,000
2024	52,000
2025 through 2029	293,000
Contributions expected to be made by Company in next fiscal year	$ 50,000
Supplemental Pension [Member]
Assumptions used to determine net periodic benefit obligations [Abstract]
Discount rate	2.61%	3.81%