Facility Consolidation and Severance Expenses, Net (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Employee Retention Credit, Line Items [Line Items]
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
Restructuring Cost and Reserve [Line Items]
Accrued Balance		343	$ 944
Expenses to Date	[1]	3,752	5,019
Cash Payments		3,537	5,620
Accrued Balance		558	343	$ 944
Total Costs Incurred to Date		13,542
Expected Cost Remaining		13,542
Environmental Remediation Costs Recognized [Abstract]
Facility consolidation and severance expenses, net		3,752	5,019	3,167
2015 Corporate Office Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		38	98
Expenses to Date	[1]	6	13
Cash Payments		44	73
Accrued Balance		0	38	98
Total Costs Incurred to Date		835
Expected Cost Remaining		835
2017 Profit Improvement Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		305	846
Expenses to Date	[1]	1,376	5,006
Cash Payments		1,577	5,547
Accrued Balance		104	305	846
Total Costs Incurred to Date		10,176
Expected Cost Remaining		10,176
Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		0	0
Expenses to Date		0	3
Cash Payments		0	0
Accrued Balance		0	0	$ 0
Total Costs Incurred to Date		3,323
Expected Cost Remaining		3,323
2020 COVID-19 Continuity Plan
Restructuring Cost and Reserve [Line Items]
Accrued Balance
Expenses to Date		2,370
Cash Payments		1,916
Accrued Balance		454
Total Costs Incurred to Date		2,531
Expected Cost Remaining		$ 2,531

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