LIQUIDITY AND MANAGEMENT'S PLAN (Detail Textuals 2) (Crede, Second Purchase Agreement, USD $)	Jul. 31, 2013
Crede \| Second Purchase Agreement
Liquidity And Management Plan [Line Items]
Maximum price per share to issue common stock or securities convertible into common stock	$ 0.187
Market price of common stock	$ 0.167

Represents maximum price per share to issue common stock or securities convertible into common stock.

No definition available.

Name:	apdn_MaximumPricePerShareToIssueCommonStockOrSecuritiesConvertibleIntoCommonStock
Namespace Prefix:	apdn_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant