It represents number of major customers in concentration risk.

No definition available.

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- Definition

Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Article 5

+ Details

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Balance Type:	debit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

+ Details

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Period Type:	duration

- Details

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- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=apdn_ThreeCustomersConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=apdn_TwoCustomersConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Period Type:

SUMMARY OF ACCOUNTING POLICIES (Detail Textuals 1)	3 Months Ended
SUMMARY OF ACCOUNTING POLICIES (Detail Textuals 1)	Dec. 31, 2015 USD ($) Customer	Dec. 31, 2014 Customer	Sep. 30, 2015 USD ($)
Concentration Risk [Line Items]
Long term accounts receivables \| $	$ 1,500,000		$ 1,500,000
Customer Concentration Risk \| Total Revenue \| Three customers
Concentration Risk [Line Items]
Percentage of total revenue and accounts receivable	73.00%
Number of customers	3
Customer Concentration Risk \| Total Revenue \| Two customers
Concentration Risk [Line Items]
Percentage of total revenue and accounts receivable		53.00%
Number of customers		2
Customer Concentration Risk \| Accounts Receivable \| Three customers
Concentration Risk [Line Items]
Percentage of total revenue and accounts receivable	92.00%
Number of customers	3
Long term accounts receivables \| $	$ 1,500,000
Customer Concentration Risk \| Accounts Receivable \| Two customers
Concentration Risk [Line Items]
Percentage of total revenue and accounts receivable		74.00%
Number of customers		2