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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 |  |  |  |

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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
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