Facility Consolidation and Severance Expenses, Net (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 28, 2020	Mar. 30, 2019
Restructuring Cost and Reserve [Line Items]
Accrued Balance		$ 343	$ 944
Expenses to Date	[1]	24	2,091
Cash Payments		171	2,212
Accrued Balance		196	823
Total Costs Incurred To Date		9,653
Expected Cost Remaining		9,653
2015 Corporate Office Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		38	98
Expenses to Date	[1]	8	5
Cash Payments		33	22
Accrued Balance		13	81
Total Costs Incurred To Date		837
Expected Cost Remaining		837
2017 Profit Improvement Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		305	846
Expenses to Date	[1]	16	2,086
Cash Payments		138	2,190
Accrued Balance		183	742
Total Costs Incurred To Date		8,816
Expected Cost Remaining		8,816
Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		0	0
Expenses to Date		0	5
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.