Facility Consolidation Expenses, Net (Details) - USD ($) $ in Thousands		6 Months Ended		12 Months Ended
		Jul. 01, 2017	Jun. 25, 2016	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Accrued Balance		$ 514	$ 341	$ 341
Expenses To Date	[1]	0	1,814
Cash Payments		242	1,175
Accrued Balance		272	980	514
Total Costs Incurred To Date		8,247
Expected Cost Remaining		8,247
2014 Warehousing Distribution and Manufacturing Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		266	0	0
Expenses To Date	[1]	0	1,738
Cash Payments		204	1,048
Accrued Balance		62	690	266
Total Costs Incurred To Date		7,444
Expected Cost Remaining		7,444
Environmental Remediation Costs Recognized [Abstract]
Accrual for Environmental Loss Contingencies				690
Accrual for Environmental Loss Contingencies, Revision in Estimates				(359)
2015 Corporate Office Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		248	341	341
Expenses To Date	[1]	0	76
Cash Payments		38	127
Accrued Balance		210	$ 290	$ 248
Total Costs Incurred To Date		803
Expected Cost Remaining		$ 803

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