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INCOME TAXES (Parentheticals) (Details 1) | 12 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015
Income Tax Disclosure [Abstract] |  |
Federal benefit | 1.00% | 1.00%

X
- Definition Represents percentage effective income tax rate reconciliation federal benefit. + References No definition available. + Details
Name: | apdn_EffectiveIncomeTaxRateReconciliationFederalBenefit
Namespace Prefix: | apdn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration