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Cephalon and Teva Agreement (Details Textual)	1 Months Ended	6 Months Ended		12 Months Ended	1 Months Ended
	Nov. 30, 2012 USD ($)	Oct. 31, 2013 USD ($)	Oct. 31, 2012 USD ($)	Apr. 30, 2013 CAD	Mar. 16, 2011 One Compound [Member] USD ($)	Mar. 16, 2011 Second Compound [Member] USD ($)
Royalty Expense				10,000	$ 460,000	$ 880,000
Exercise of Options to One Time Royalty Fee	880,000	880,000
Deferred Revenue, Revenue Recognized		133,000	237,000
Deferred Revenue, Period Increase (Decrease)		$ 277,000

X

- Definition

The value of options exercised during the period for the payment of one-time royalty fee.

+ References

No definition available.

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X

- Definition

The net addition or reduction in the carrying amount of deferred revenue during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).(Q1))

-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

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- Definition

Amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1)

-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780



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-Name Staff Accounting Bulletin (SAB)

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- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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