Facility Consolidation and Severance Expenses, Net (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 29, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Accrued Balance		$ 944	$ 505
Expenses to Date	[1]	3,816	406
Cash Payments		4,313	693
Accrued Balance		447	218
Total Costs Incurred To Date		8,426
Expected Cost Remaining		9,118
2015 Corporate Office Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		98	171
Expenses to Date	[1]	8	4
Cash Payments		42	40
Accrued Balance		64	135
Total Costs Incurred To Date		824
Expected Cost Remaining		824
2017 Profit Improvement Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		846	334
Expenses to Date	[1]	3,808	402
Cash Payments		4,271	653
Accrued Balance		383	$ 83
Total Costs Incurred To Date		7,602
Expected Cost Remaining		8,294
Other Restructuring Costs		1,052
Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		0
Expenses to Date		3
Cash Payments		0
Accrued Balance		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.