Note 8 Income (Loss) Before Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Income Tax Disclosure [Abstract]
Domestic	$ 128,493	$ 138,138	$ 91,613
Foreign	84,987	66,479	84,580
Income before income taxes	213,480	204,617	176,193
Federal:
Current	(2,524)	490	1,413
Deferred	37,543	(4,550)	(226,225)
State:
Current	1,648	(265)	543
Deferred	4,204	(5,141)	(513)
Foreign:
Current	37,076	32,427	42,295
Deferred	(3,300)	(6,182)	(18,581)
Total provision for (benefit from) income taxes	$ 74,647	$ 16,779	$ (201,068)