Subsequent Event - Additional Information (Detail) - USD ($)		11 Months Ended	12 Months Ended
	Mar. 15, 2018	Oct. 02, 2015	Sep. 29, 2017	Sep. 30, 2016	Oct. 02, 2015	[1]
Subsequent Event [Line Items]
Sale of business		$ 30,156,000	$ 600,000	$ 3,654,000	$ 30,156,000
Kirkhill Business | Subsequent Event
Subsequent Event [Line Items]
Sale of business	$ 50,000,000
Kirkhill Business | Subsequent Event | Minimum
Subsequent Event [Line Items]
Loss on sale of business	5,000,000
Kirkhill Business | Subsequent Event | Maximum
Subsequent Event [Line Items]
Loss on sale of business	$ 7,000,000

[1] (Recast)