INCOME TAXES - Provision for income taxes differ from amount of income tax determined (Parentheticals) (Details 1)	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Statutory rate & local income tax rate including portion of federal benefit	7.10%	7.10%

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), including portion of federal tax expense (benefit).

No definition available.

Name:	apdn_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxesIncludingPortionOfFederalBenefit
Namespace Prefix:	apdn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration