FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Jan. 31, 2016	Nov. 01, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 0	$ 0
Total liabilities	0	0
Fair Value [Member] \| 3.25% convertible senior notes due 2016 [Member]
Fair and carrying values of the Company's convertible senior notes [Abstract]
Convertible senior notes	67,183	60,375
Fair Value [Member] \| 3.25% convertible senior notes due 2019 [Member]
Fair and carrying values of the Company's convertible senior notes [Abstract]
Convertible senior notes	73,163	64,550
Carrying Value [Member] \| 3.25% convertible senior notes due 2016 [Member]
Fair and carrying values of the Company's convertible senior notes [Abstract]
Convertible senior notes	57,500	57,500
Carrying Value [Member] \| 3.25% convertible senior notes due 2019 [Member]
Fair and carrying values of the Company's convertible senior notes [Abstract]
Convertible senior notes	$ 57,500	$ 57,500

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Convertible Security
-URI http://asc.fasb.org/extlink&oid=6509036

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Fair value of financial and nonfinancial obligations.

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