Capital Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 02, 2021	Oct. 03, 2020
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 388,035	$ 384,200
Accumulated Amortization	(95,102)	(89,105)
Intangible assets, net	$ 292,933	$ 295,095	[1]
Weighted Average Useful Life (in Years)	14 years	14 years 1 month 6 days
Trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 44,100	$ 44,100
Software development costs
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	55,441	53,171
Accumulated Amortization	(16,365)	(16,299)
Net Carrying Value	$ 39,076	$ 36,872
Weighted Average Useful Life (in Years)	6 years 10 months 24 days	6 years 10 months 24 days
Technology and patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 59,267	$ 58,575
Accumulated Amortization	(20,360)	(19,033)
Net Carrying Value	$ 38,907	$ 39,542
Weighted Average Useful Life (in Years)	14 years 8 months 12 days	14 years 8 months 12 days
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 25,332	$ 24,688
Accumulated Amortization	(5,229)	(4,752)
Net Carrying Value	$ 20,103	$ 19,936
Weighted Average Useful Life (in Years)	17 years 7 months 6 days	17 years 7 months 6 days
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 197,403	$ 196,251
Accumulated Amortization	(48,347)	(45,079)
Net Carrying Value	$ 149,056	$ 151,172
Weighted Average Useful Life (in Years)	15 years 8 months 12 days	15 years 8 months 12 days
Land-use rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,201	$ 2,345
Accumulated Amortization	(997)	(1,223)
Net Carrying Value	$ 204	$ 1,122
Weighted Average Useful Life (in Years)	5 years 4 months 24 days	26 years 1 month 6 days
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,291	$ 5,070
Accumulated Amortization	(3,804)	(2,719)
Net Carrying Value	$ 1,487	$ 2,351
Weighted Average Useful Life (in Years)	1 year 8 months 12 days	1 year 8 months 12 days
Software Development Not Yet Placed In Service
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 37,736	$ 35,466

[1] The Consolidated Balance Sheet as of October 3, 2020 has been derived from the audited consolidated financial statements at that date.The accompanying Notes to Consolidated Financial Statements (Unaudited) are an integral part of these consolidated financial statements.