Property, Plant and Equipment - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Capital Leased Assets [Line Items]
Leased property, plant and equipment capitalized	$ 34,787	$ 18,871
Amortization of assets held under capital leases	3,000	1,900	$ 500
Capital lease additions	20,500	2,900	1,200
Purchase of property, plant and equipment included in accounts payable	10,800	$ 3,500	$ 2,700
Neenah Design Center
Capital Leased Assets [Line Items]
Leased property, plant and equipment capitalized	$ 15,700