Facility Consolidation Expenses (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 26, 2016	Mar. 28, 2015
Restructuring Cost and Reserve [Line Items]
Accrued Balance		$ 341	$ 0
Expenses To Date	[1]	1,413	775
Cash Payments		(754)	(775)
Accrued Balance		1,000	0
Total Costs Incurred To Date	[1]	9,873
Expected Cost Remaining		10,108
2014 Warehousing Distribution and Manufacturing Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		0	0
Expenses To Date		1,342	605
Cash Payments		(652)	(605)
Accrued Balance		690	0
Total Costs Incurred To Date		7,405
Expected Cost Remaining		7,635
Environmental Remediation Costs Recognized [Abstract]
Accrual for Environmental Loss Contingencies		690
2014 Atlas Integration Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		0	0
Expenses To Date		0	170
Cash Payments		0	(170)
Accrued Balance		0	0
Total Costs Incurred To Date		1,669
Expected Cost Remaining		1,669
2015 Corporate Office Consolidation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Accrued Balance		341	0
Expenses To Date		71	0
Cash Payments		(102)	0
Accrued Balance		310	$ 0
Total Costs Incurred To Date		799
Expected Cost Remaining		$ 804

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