Note 12 Revenue and Gross Profit by Segment (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Segment Information [Line Items]
Gross profit		$ 519,911	$ 514,282	$ 483,856
Net sales		6,868,619	6,481,181	6,374,541
Depreciation and amortization		$ 118,751	111,910	100,567
Revenue percentage generated by reportable segment		80.00%
Number of reportable segments		1
Property, Plant and Equipment, Additions		$ 140,634	110,560	126,481
Operating segments
Segment Information [Line Items]
Gross profit		531,504	519,005	501,500
Depreciation and amortization		105,878	99,098	91,954
Property, Plant and Equipment, Additions		136,512	104,936	123,045
Operating segments | IMS
Segment Information [Line Items]
Gross profit		404,350	397,309	366,436
Net sales		5,645,499	5,297,740	5,157,427
Depreciation and amortization		74,769	66,036	56,428
Property, Plant and Equipment, Additions		106,000	83,084	105,755
Operating segments | CPS
Segment Information [Line Items]
Gross profit		127,154	121,696	135,064
Net sales		1,422,264	1,372,412	1,414,797
Depreciation and amortization		31,109	33,062	35,526
Property, Plant and Equipment, Additions		30,512	21,852	17,290
Segment reconciling items
Segment Information [Line Items]
Gross profit	[1]	(11,593)	(4,723)	(17,644)
Unallocated corporate items
Segment Information [Line Items]
Depreciation and amortization	[2]	12,873	12,812	8,613
Property, Plant and Equipment, Additions	[2]	4,122	5,624	3,436
Intersegment eliminations
Segment Information [Line Items]
Net sales		$ (199,144)	$ (188,971)	$ (197,683)

[1] For purposes of evaluating segment performance, management excludes certain items from its measures of revenue and gross profit. These items consist of stock-based compensation expense, amortization of intangible assets, charges or credits resulting from distressed customers and acquisition-related items.

[2] Primarily related to selling, general and administration functions.