Segment Information - Disclosure by Reportable Segment and Reconciliation of Total Operating Segment Information (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Dec. 30, 2017	Jun. 30, 2018	Jun. 24, 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

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

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