Represents area of laboratory space.

No definition available.

Name:	apdn_AreaOfLaboratorySpace
Namespace Prefix:	apdn_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the area of property under operating lease.

+ References

No definition available.

+ Details

Name:	apdn_AreaOfPropertyUnderOperatingLease
Namespace Prefix:	apdn_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount related to base rent per annum.

+ References

No definition available.

+ Details

Name:	apdn_BaseRent
Namespace Prefix:	apdn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the amount for base rent during initial lease term per annum.

+ References

No definition available.

+ Details

Name:	apdn_BaseRentDuringInitialLeaseTerm
Namespace Prefix:	apdn_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	apdn_CommitmentsAndContingenciesLineItems
Namespace Prefix:	apdn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents lease for satellite testing.

+ References

No definition available.

+ Details

Name:	apdn_LeaseForSatelliteTesting
Namespace Prefix:	apdn_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

+ Details

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=apdn_SatelliteTestingFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

COMMITMENTS AND CONTINGENCIES (Detail Textuals)	1 Months Ended		3 Months Ended
COMMITMENTS AND CONTINGENCIES (Detail Textuals)	Nov. 17, 2017 USD ($) ft²	Jun. 15, 2013 USD ($) ft²	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Commitments and Contingencies [Line Items]
Area of property under operating lease \| ft²		30,000
Extended operating lease for additional period		3 years
Base rent during initial lease term per annum \| $		$ 458,098
Area of laboratory space \| ft²		1,500
Total lease rental expenses \| $			$ 129,193	$ 133,216
Satellite testing facility
Commitments and Contingencies [Line Items]
Lease for satellite testing \| ft²	1,108
Term lease	3 years
Base rent \| $	$ 6,500