The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromDivestitureOfBusinesses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Sale of Business - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 15, 2018	Mar. 30, 2018	Mar. 31, 2017	Mar. 30, 2018	Mar. 31, 2017
Sale Of Business [Line Items]
Sale of business	$ 50,000			$ 47,814	$ 600
Gain (loss) on sale of business	(5,300)	$ (5,310)	$ 0	$ (5,310)	$ 0
Valuation Allowance
Sale Of Business [Line Items]
Gain (loss) on sale of business	$ 700