Segment Information - Disclosure by Reportable Segment and Reconciliation of Total Operating Segment Information (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 30, 2017	Mar. 31, 2018	Mar. 25, 2017
Segment Reporting Information [Line Items]
Loss on sale of business	$ 4,823	$ 4,823	$ 0
Operating/Reportable Segments [Member] \| Propane [Member]
Segment Reporting Information [Line Items]
Loss on sale of business		$ 4,823

Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.

No definition available.

Name:	us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration