Amount of increase (decrease) in loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Name:	us-gaap_LossContingencyAccrualCarryingValuePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

Multiemployer Pension Plan Multiemployer Plans (Details) (Withdrawal from Multiemployer Defined Benefit Plan [Member], USD $) In Thousands, unless otherwise specified	15 Months Ended	3 Months Ended
	Mar. 29, 2015	Mar. 29, 2015	Dec. 29, 2013
Loss Contingencies [Line Items]
Withdrawal Obligation Payments	$ 915
Cost of Sales [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual, Period Increase (Decrease)		$ (12,486)	$ 13,500