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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 7) (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 | $ 0.037104 | $ 0.04405
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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 32 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | instant

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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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