Note 3 Other Nonoperating Income (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Oct. 01, 2016
Components of Other Income (Expense), Net, Nonoperating [Line Items]
Other income, net	$ 4,564	$ 7,682	$ 4,063
Foreign exchange gains / (losses)
Components of Other Income (Expense), Net, Nonoperating [Line Items]
Other income, net	766	4,709	(415)
Bargain purchase gain, net of tax
Components of Other Income (Expense), Net, Nonoperating [Line Items]
Other income, net	0	0	1,642
Other, net
Components of Other Income (Expense), Net, Nonoperating [Line Items]
Other income, net	$ 3,798	$ 2,973	$ 2,836