Convertible Senior Notes, Warrants, and Hedges (Net Carrying Amount Rollforward) (Details) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended
Jan. 03, 2016	Jan. 03, 2016
Convertible Debt Carrying Amount [Roll Forward]
Net carrying amount, end of period	$ 269,031	$ 269,031
Convertible debt \| 0.875% Convertible Senior Notes Due 2022
Convertible Debt Carrying Amount [Roll Forward]
Net carrying amount at issuance date	266,867
Amortization of debt issuance costs	180	180
Amortization of debt discount	1,984	1,984
Net carrying amount, end of period	$ 269,031	$ 269,031

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration