Facility Consolidation and Severance Expenses, Net (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 27, 2021	Mar. 28, 2020
Restructuring Cost and Reserve [Line Items]
Accrued Balance		$ 558	$ 343
Expenses to Date	[1]	25	24
Cash Payments		232	171
Accrued Balance		351	196
Total Costs Incurred To Date		13,567
Expected Cost Remaining		13,567
Environmental Remediation Costs Recognized [Abstract]
ERC, Refundable Tax Credit		$ 5
ERC, Eligible Percentage of Employees Wages Paid		50.00%
ERC, Qualified Wages Paid to Employees, Maximum		$ 10
ERC, Tax Credit Received		2,100
ERC, Portion Recognized in Cost of Sales		1,500
ERC, Portion Recognized in Selling and Administrative Expenses		600
2015 Corporate Office Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		0	38
Expenses to Date	[1]	0	8
Cash Payments		0	33
Accrued Balance		0	13
Total Costs Incurred To Date		835
Expected Cost Remaining		835
2017 Profit Improvement Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		104	305
Expenses to Date	[1]	0	16
Cash Payments		22	138
Accrued Balance		82	183
Total Costs Incurred To Date		10,176
Expected Cost Remaining		10,176
2020 COVID-19 Continuity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		454
Expenses to Date	[1]	25
Cash Payments		210
Accrued Balance		269
Total Costs Incurred To Date		2,556
Expected Cost Remaining	[2]	2,556
Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		0	0
Expenses to Date		0	0
Cash Payments		0	0
Accrued Balance		0	$ 0
Total Costs Incurred To Date		3,323
Expected Cost Remaining		$ 3,323

[1] Costs incurred under these plans are classified as "facility consolidation and severance expenses, net" in the Company's Consolidated Condensed Statements of Operations.

[2] The total additional expected costs under the COVID-19 Continuity Plan cannot be reasonably estimated at this time due to the fluid nature of the COVID-19 outbreak and the unpredictable future impact upon our business.