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PRIVATE PLACEMENT OF CONVERTIBLE NOTES - Adjustment of Conversion Price of Certain 10 % Senior Secured Convertible Promissory Notes dated July 15, 2010 (Detail Textuals 6) (Secured Convertible Note Payable, adjustment dated July 15, 2010, USD $) | Feb. 28, 2011 | Jul. 15, 2010
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Secured Convertible Note Payable, adjustment dated July 15, 2010 |  |
Debt Instrument [Line Items] |  |
Convertible promissory note issued to related party | $ 2,000,000 |
Converted portion of convertible promissory notes issued | 1,550,000 |
Price at maturity for conversion into common stock | $ 2.23 | $ 2.64
Remaining senior secured convertible promissory notes | $ 450,000 |

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- Definition This element represents conversion of promissory note to senior secured convertible promissory note as on the conversion date. + References No definition available. + Details
Name: | apdn_ConvertedPortionOfConvertiblePromissoryNotesIssued
Namespace Prefix: | apdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition This element represents Remaining portion of senior secured convertible promissory notes payable. + References No definition available. + Details
Name: | apdn_PortionOfUnconvertedConvertiblePromissoryNotes
Namespace Prefix: | apdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration