Segment Information - Concentration (Details) - entity	12 Months Ended
Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Major customers disclosures
Reportable segments, number	5	5	5
Consolidated revenues
Major customers disclosures
Concentration risk, number	0

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration