This item represents about agreement renewal period.

No definition available.

Name:	apdn_AgreementRenewalPeriod
Namespace Prefix:	apdn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Annual bonus approved if company reaches threshold revenues.

+ References

No definition available.

+ Details

Name:	apdn_ApprovedBonus
Namespace Prefix:	apdn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

This item represents about compensation description.

+ References

No definition available.

+ Details

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

- Definition

percentage of reduction CEO's annual base salary.

+ References

No definition available.

+ Details

Name:	apdn_PercentageOfReductionCeoSAnnualBaseSalary
Namespace Prefix:	apdn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents Revenue Bonus recorded to long term accrued liabilities on the balance sheet.

+ References

No definition available.

+ Details

Name:	apdn_RevenueBonusRecordedInLongTermAccruedLiabilities
Namespace Prefix:	apdn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of expense for salary and wage arising from service rendered by officer. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=apdn_EmploymentAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

COMMITMENTS AND CONTINGENCIES - Employment Agreement (Details) - Employment Agreement - USD ($)						12 Months Ended
	May 25, 2024	Mar. 31, 2024	Jan. 01, 2024	Oct. 29, 2021	Jul. 28, 2017	Sep. 30, 2024	Jun. 30, 2017	Jan. 19, 2024
COMMITMENTS AND CONTINGENCIES
Discretionary bonus								$ 500,000
CEO
COMMITMENTS AND CONTINGENCIES
Agreement renewal period					1 year	1 year	1 year
Annual salary		$ 250,000	$ 450,000	$ 450,000
percentage of reduction CEO's annual base salary				45.00%
Compensation description					The employment agreement with the CEO also provides that if he is terminated before the end of the initial or a renewal term by the Company without cause or if the CEO terminates his employment for good reason, then, in addition to previously earned and unpaid salary, bonus and benefits, and subject to the delivery of a general release and continuing compliance with restrictive covenants, the CEO will be entitled to receive a pro rata portion of the greater of either (X) the annual bonus he would have received if employment had continued through the end of the year of termination or (Y) the prior year’s bonus; salary continuation payments for two years following termination equal to the greater of (i) three times base salary or (ii) two times base salary plus bonus; Company-paid COBRA continuation coverage for 18 months post-termination; continuing life insurance benefits (if any) for two years; and extended exercisability of outstanding vested options (for three years from termination date or, if earlier, the expiration of the fixed option term). If termination of employment as described above occurs within six months before or two years after a change in control of the Company, then, in addition to the above payments and benefits, all of the CEO’s outstanding options and other equity incentive awards will become fully vested and the CEO will receive a lump sum payment of the amounts that would otherwise be paid as salary continuation. In general, a change in control will include a 30% or more change in ownership of the Company.
Approved bonus	$ 450,000