Consolidated Statements Of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (9,141)	$ (23,892)
Other comprehensive income (loss), net of tax:
Unrealized hedge gain arising during the period, net of tax of $0.4 million and $0 in the first quarter of 2017 and 2016, respectively	3,037	1,643
Net hedge loss reclassified into earnings, net of tax of $0.1 million and $0 in the first quarter of 2017 and 2016, respectively	(356)	(846)
Unrealized gain on hedging instruments	2,681	797
Foreign currency translation adjustment, net of tax of $0 for each period	(18,652)	(10,504)
Unrealized loss on marketable securities	(139)	0
Amortization of net actuarial pension loss included in net income, net of tax of $0.2 million and $0.2 million in the first quarter of 2017 and 2016, respectively	516	402
Change in unamortized pension loss during the period related to changes in foreign currency	1,690	550
Total other comprehensive loss	(13,904)	(8,755)
Comprehensive loss	$ (23,045)	$ (32,647)