Pension Plan (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 02, 2021	Jan. 01, 2021
Pension Plan (Details) [Line Items]
Defined Benefit Plan Vesting Periods	5 years
Defined Benefit Plan, Funded (Unfunded) Status of Plan	$ (4,670,000)	$ (4,110,000)
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	8.00%	8.00%
Defined Benefit Plan, Amortization of Gain (Loss)	$ (288,000)	$ (264,000)
Defined Benefit Plan, Accumulated Benefit Obligation	15,100,000	14,300,000
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year	1,000,000
Liability, Defined Benefit Pension Plan, Noncurrent	3,700,000
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	641,000
Defined Benefit Plan, Plan Assets, Contributions by Employer	85,000	629,000
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 556,000
Liability, Other Retirement Benefits		$ 500,000
Subsequent Event [Member]
Pension Plan (Details) [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			$ 1,000,000	$ 56,000