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Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
Restructuring Costs (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Jan. 02, 2016	Apr. 04, 2015	Apr. 02, 2016	Apr. 04, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 1,056	$ 0		$ 0
Restructuring Charges	1,917		$ 0	3,424	$ 1,691
Restructuring Reserve, Accrual Adjustment	(319)	(451)
Restructuring Reserve	2,654	1,056		2,654
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	1,056	0		0
Restructuring Reserve, Accrual Adjustment	(313)	(338)
Restructuring Reserve	2,399	1,056		2,399
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0		0
Restructuring Reserve, Accrual Adjustment	(6)	(113)
Restructuring Reserve	255	0		255
Restructuring Charges [Member] \| Fremont and Livingston Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,917	1,507
Restructuring Charges [Member] \| Fremont and Livingston Restructuring Plan [Member] \| Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,656	1,394		3,050
Restructuring Charges [Member] \| Fremont and Livingston Restructuring Plan [Member] \| Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 261	$ 113		$ 374