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STOCK OPTIONS AND WARRANTS - Transactions involving warrants (Details) - Warrants | 12 Months Ended
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Sep. 30, 2015 $ / shares shares
Class Of Warrant Or Right, Number Of Shares [Roll Forward] |
Beginning Balance, Number of Shares | shares | 945,166
Granted | shares | 5,833,878
Exercised | shares | (16,667)
Cancelled or expired | shares | (734,723)
Ending Balance, Number of Shares | shares | 6,027,654
Class Of Warrant Or Right, Weighted Average Price Per Share [Roll Forward] |
Beginning Balance, Weighted Average Price Per Share | $ / shares | $ 9.59
Granted | $ / shares | 3.50
Exercised | $ / shares | (2.40)
Cancelled or expired | $ / shares | (11.09)
Ending Balance, Weighted Average Price Per Share | $ / shares | $ 3.54

X
- Definition This element represents the number of warrants exercised by participants. + References No definition available. + Details
Name: | apdn_ClassOfWarrantOrRightExercised
Namespace Prefix: | apdn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the number of warrants that were either cancelled or expired. + References No definition available. + Details
Name: | apdn_ClassOfWarrantOrRightForfeituresAndExpirations
Namespace Prefix: | apdn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents number of warrants granted to participants. + References No definition available. + Details
Name: | apdn_ClassOfWarrantOrRightGranted
Namespace Prefix: | apdn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | apdn_ClassOfWarrantOrRightNumberOfSharesRollForward
Namespace Prefix: | apdn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | apdn_ClassOfWarrantOrRightWeightedAveragePricePerShareRollForward
Namespace Prefix: | apdn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents weighted average exercise price per share or per unit of warrants or rights Cancelled or expired. + References No definition available. + Details
Name: | apdn_WeightedAveragePricePerShareWarrantCancelledOrExpired
Namespace Prefix: | apdn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents weighted average exercise price per share or per unit of warrants or rights exercised. + References No definition available. + Details
Name: | apdn_WeightedAveragePricePerShareWarrantExercised
Namespace Prefix: | apdn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents weighted average exercise price per share or per unit of warrants or rights granted. + References No definition available. + Details
Name: | apdn_WeightedAveragePricePerShareWarrantGranted
Namespace Prefix: | apdn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents weighted average exercise price per share or per unit of warrants or rights outstanding. + References No definition available. + Details
Name: | apdn_WeightedAveragePricePerShareWarrantOutstanding
Namespace Prefix: | apdn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=us-gaap_WarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |