CAPITAL STOCK	12 Months Ended
Sep. 30, 2016
Stockholders' Equity Note [Abstract]
CAPITAL STOCK	NOTE J – CAPITAL STOCK Common Stock Transactions during and subsequent to the Fiscal Year Ended September 30, 2016: On November 2, 2016, the Company entered into a securities purchase agreement with an institutional investor providing for the purchase of $5 million of common stock and warrants at a combined price of $2.20 per share of common stock and warrant (the “Private Placement”). In the Private Placement, the Company sold 2,272,727 shares of its common stock and warrants to purchase 2,272,727 shares of its common stock. The warrants have the same terms as the Company's existing publicly traded warrants (APDNW) with an exercise price of $3.50 per share and an expiration date of November 20, 2019. The offering closed on November 7, 2016. The Company has agreed to file a registration statement providing for the resale of these securities on Form S-3 by December 7, 2016. Upon effectiveness of the registration statement, it is expected that the common stock and warrants issued in the Private Placement will be freely tradeable on The NASDAQ Capital Market under the symbols "APDN" and "APDNW", respectively. The aggregate gross proceeds to the Company from the Private Placement were $5 million before deducting the placement agents' fee and other offering expenses. In connection with the closing of this Private Placement, as partial compensation, on November 7, 2016, the Company granted warrants to purchase an aggregate of 68,182 shares of its common stock to the Company's placement agents, Maxim Group LLC and Imperial Capital LLC (the “Placement Agent Warrants”) at an exercise price of $2.53 (115% of the public offering price), subject to adjustment as set forth therein (including for stock dividends and splits and certain other distributions and “Fundamental Transactions,” as defined therein). The Placement Agent Warrants will be exercisable beginning six months following the closing date of the Private Placement and terminate at 5:00 P.M. (Eastern Standard Time) on November 7, 2021. In addition, the Placement Agent Warrants provide for cashless exercise, which the Placement Agents may elect if there is no effective registration statement registering the resale of the shares issuable upon exercise of the Placement Agent Warrants. The number of shares of common stock that may be acquired by the Placement Agents upon any exercise of the Placement Agent Warrants (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise, the total number of shares of common stock then beneficially owned by the Placement Agent and its Affiliates (as defined therein) and any other Persons whose beneficial ownership of common stock would be aggregated with the Placement Agent pursuant to the Exchange Act, does not exceed 9.99% of the total number of issued and outstanding shares of common stock. On November 23, 2015, the Company entered into a securities purchase agreement with certain institutional investors providing for the purchase and sale of 2,500,000 shares of common stock at a price of $3.49 per share in a registered direct public offering. In a concurrent private placement, the Company sold warrants to purchase 1,250,000 shares of its common stock at a price of $0.01 per warrant, with an exercise price of $4.30 per share. The warrants were exercisable beginning six months following the closing date of the private placement and will expire five years from the date on which they become exercisable. The gross proceeds to the Company from this registered direct offering and private placement before deducting the placement agent fees and offering expenses, is $8.75 million. In connection with the closing of the registered direct offering and the concurrent private placement, as partial compensation, on November 25, 2015, the Company granted warrants to purchase 50,000 shares of common stock to its placement agent. These warrants have an exercise price of $4.03 (115% of the public offering price), subject to adjustment as set forth therein, will be exercisable beginning six months following the closing date of the Private Placement and expire at 5:00 PM (Eastern Standard Time) on November 25, 2020. During the fiscal year ended September 30, 2016, the Company granted 24,000 shares of common stock to consultants for a total expense of approximately $78,130 pursuant to the Company's 2005 Incentive Stock Plan. Common Stock Transactions during the Fiscal Year Ended September 30, 2015: On October 24, 2014, the Company filed a Third Certificate of Amendment of its Certificate of Incorporation with the Secretary of State of the State of Delaware that effected a one-for-60 (1:60) reverse stock split of its common stock, par value $.001 per share, and a decrease in its authorized common stock, from 1,350,000,000 to 500,000,000 shares, effective October 29, 2014. All warrant, option, share, and per share information in the consolidated financial statements gives retroactive effect to the one-for-60 reverse stock split that was effected on October 29, 2014. In addition, the Company is authorized to issue 10,000,000 shares of preferred stock with a $0.001 par value per share. On November 20, 2014, the Company closed its underwritten public offering of 2,800,000 shares of common stock and warrants to purchase up to an aggregate of 2,800,000 shares of common stock for gross proceeds of $9.1 million before deducting underwriting discounts and offering expenses. The Company utilized $4,091,000 of the gross proceeds to repurchase the remaining Series B Warrants from Crede, as discussed in Note H. The combined price for each share of common stock and one warrant was $3.25. The warrants may be exercised for a period of five years and have an exercise price of $3.50 per share. In connection with the offering, the Company granted to the underwriters a 45-day option to purchase up to 420,000 additional shares of common stock at $3.24 per share and/or up to 420,000 additional warrants at $0.01 per share to cover over-allotments, if any. The Company’s Chief Executive Officer and an affiliated company of a member of the Company’s board of directors participated in this underwritten public offering. The Company’s common stock and warrants are listed on the Nasdaq Capital Market under the symbols “APDN” and “APDNW”, respectively. On December 19, 2014, the Company closed on the underwriters’ exercise of its over-allotment option of 416,850 warrants for gross proceeds of $4,169 and on December 30, 2014, the Company closed on the underwriters’ additional exercise of its over-allotment option of 52,000 shares of common stock for gross proceeds of $168,480. The total number of common stock and warrants issued under this offering, including the exercise of the over-allotment option was 2,852,000 and 3,216,850, respectively. The gross proceeds to the Company was $9.3 million and net proceeds after deducting underwriting discounts, offering expenses and the repurchase of the remaining Series B Warrants from Crede was approximately $3.69 million. In connection with the closing of this underwritten public offering, on November 20, 2014, the Company granted 128,800 warrants to purchase common stock to its underwriters as partial compensation. These warrants have an exercise price of $3.73 (115% of the public offering price) and expire on November 14, 2019. See Note G for the common stock and warrants issued in connection with the conversion of the promissory notes. During the fiscal year ended September 30, 2015, the Company granted 40,500 shares of common stock to consultants for a total expense of approximately $136,281 pursuant to the Company's 2005 Incentive Stock Plan. On April 1, 2015, the Company closed its underwritten public offering of 4,011,000 shares of common stock and warrants to purchase up to an aggregate of 1,604,400 shares of common stock, at $3.00 ($2.99 for one share of common stock and $0.01 for one warrant) (“combined offering price”), including 191,000 shares and 76,400 warrants sold pursuant to the partial exercise of the underwriters’ over-allotment option. The warrants have a per share exercise price of $3.50, are exercisable immediately, and expire on November 20, 2019. The gross proceeds to the Company from this offering, including the partial exercise of the over-allotment option but before deducting the underwriting discount and offering expenses, were $12.0 million. In connection with the offering, the Company granted to the underwriters a 45-day option to purchase up to 573,000 additional shares of common stock and up to 229,200 additional warrants to cover over-allotments, if any. On April 30, 2015, the Company closed on the underwriters’ exercise of its over-allotment option of 87,000 shares of common stock and 152,800 warrants for gross proceeds of $263,950. In connection with the closing of this underwritten public offering, as partial compensation, on April 1, 2015, the Company granted up to 163,720 warrants to purchase common stock to its underwriters. These warrants have an exercise price of $3.44 (115% of the public offering price) and expire on March 27, 2020.

CAPITAL STOCK

12 Months Ended

Sep. 30, 2016

Stockholders' Equity Note [Abstract]

NOTE J – CAPITAL STOCK

Common Stock Transactions during and subsequent to the Fiscal Year Ended September 30, 2016:

On November 2, 2016, the Company entered into a securities purchase agreement with an institutional investor providing for the purchase of $5 million of common stock and warrants at a combined price of $2.20 per share of common stock and warrant (the “Private Placement”). In the Private Placement, the Company sold 2,272,727 shares of its common stock and warrants to purchase 2,272,727 shares of its common stock. The warrants have the same terms as the Company's existing publicly traded warrants (APDNW) with an exercise price of $3.50 per share and an expiration date of November 20, 2019. The offering closed on November 7, 2016.

The Company has agreed to file a registration statement providing for the resale of these securities on Form S-3 by December 7, 2016. Upon effectiveness of the registration statement, it is expected that the common stock and warrants issued in the Private Placement will be freely tradeable on The NASDAQ Capital Market under the symbols "APDN" and "APDNW", respectively.

The aggregate gross proceeds to the Company from the Private Placement were $5 million before deducting the placement agents' fee and other offering expenses.

In connection with the closing of this Private Placement, as partial compensation, on November 7, 2016, the Company granted warrants to purchase an aggregate of 68,182 shares of its common stock to the Company's placement agents, Maxim Group LLC and Imperial Capital LLC (the “Placement Agent Warrants”) at an exercise price of $2.53 (115% of the public offering price), subject to adjustment as set forth therein (including for stock dividends and splits and certain other distributions and “Fundamental Transactions,” as defined therein). The Placement Agent Warrants will be exercisable beginning six months following the closing date of the Private Placement and terminate at 5:00 P.M. (Eastern Standard Time) on November 7, 2021. In addition, the Placement Agent Warrants provide for cashless exercise, which the Placement Agents may elect if there is no effective registration statement registering the resale of the shares issuable upon exercise of the Placement Agent Warrants. The number of shares of common stock that may be acquired by the Placement Agents upon any exercise of the Placement Agent Warrants (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise, the total number of shares of common stock then beneficially owned by the Placement Agent and its Affiliates (as defined therein) and any other Persons whose beneficial ownership of common stock would be aggregated with the Placement Agent pursuant to the Exchange Act, does not exceed 9.99% of the total number of issued and outstanding shares of common stock.

On November 23, 2015, the Company entered into a securities purchase agreement with certain institutional investors providing for the purchase and sale of 2,500,000 shares of common stock at a price of $3.49 per share in a registered direct public offering. In a concurrent private placement, the Company sold warrants to purchase 1,250,000 shares of its common stock at a price of $0.01 per warrant, with an exercise price of $4.30 per share. The warrants were exercisable beginning six months following the closing date of the private placement and will expire five years from the date on which they become exercisable. The gross proceeds to the Company from this registered direct offering and private placement before deducting the placement agent fees and offering expenses, is $8.75 million.

In connection with the closing of the registered direct offering and the concurrent private placement, as partial compensation, on November 25, 2015, the Company granted warrants to purchase 50,000 shares of common stock to its placement agent. These warrants have an exercise price of $4.03 (115% of the public offering price), subject to adjustment as set forth therein, will be exercisable beginning six months following the closing date of the Private Placement and expire at 5:00 PM (Eastern Standard Time) on November 25, 2020.

During the fiscal year ended September 30, 2016, the Company granted 24,000 shares of common stock to consultants for a total expense of approximately $78,130 pursuant to the Company's 2005 Incentive Stock Plan.

Common Stock Transactions during the Fiscal Year Ended September 30, 2015:

On October 24, 2014, the Company filed a Third Certificate of Amendment of its Certificate of Incorporation with the Secretary of State of the State of Delaware that effected a one-for-60 (1:60) reverse stock split of its common stock, par value $.001 per share, and a decrease in its authorized common stock, from 1,350,000,000 to 500,000,000 shares, effective October 29, 2014. All warrant, option, share, and per share information in the consolidated financial statements gives retroactive effect to the one-for-60 reverse stock split that was effected on October 29, 2014. In addition, the Company is authorized to issue 10,000,000 shares of preferred stock with a $0.001 par value per share.

On November 20, 2014, the Company closed its underwritten public offering of 2,800,000 shares of common stock and warrants to purchase up to an aggregate of 2,800,000 shares of common stock for gross proceeds of $9.1 million before deducting underwriting discounts and offering expenses. The Company utilized $4,091,000 of the gross proceeds to repurchase the remaining Series B Warrants from Crede, as discussed in Note H. The combined price for each share of common stock and one warrant was $3.25. The warrants may be exercised for a period of five years and have an exercise price of $3.50 per share. In connection with the offering, the Company granted to the underwriters a 45-day option to purchase up to 420,000 additional shares of common stock at $3.24 per share and/or up to 420,000 additional warrants at $0.01 per share to cover over-allotments, if any. The Company’s Chief Executive Officer and an affiliated company of a member of the Company’s board of directors participated in this underwritten public offering. The Company’s common stock and warrants are listed on the Nasdaq Capital Market under the symbols “APDN” and “APDNW”, respectively. On December 19, 2014, the Company closed on the underwriters’ exercise of its over-allotment option of 416,850 warrants for gross proceeds of $4,169 and on December 30, 2014, the Company closed on the underwriters’ additional exercise of its over-allotment option of 52,000 shares of common stock for gross proceeds of $168,480. The total number of common stock and warrants issued under this offering, including the exercise of the over-allotment option was 2,852,000 and 3,216,850, respectively. The gross proceeds to the Company was $9.3 million and net proceeds after deducting underwriting discounts, offering expenses and the repurchase of the remaining Series B Warrants from Crede was approximately $3.69 million.

In connection with the closing of this underwritten public offering, on November 20, 2014, the Company granted 128,800 warrants to purchase common stock to its underwriters as partial compensation. These warrants have an exercise price of $3.73 (115% of the public offering price) and expire on November 14, 2019.

See Note G for the common stock and warrants issued in connection with the conversion of the promissory notes.

During the fiscal year ended September 30, 2015, the Company granted 40,500 shares of common stock to consultants for a total expense of approximately $136,281 pursuant to the Company's 2005 Incentive Stock Plan.

On April 1, 2015, the Company closed its underwritten public offering of 4,011,000 shares of common stock and warrants to purchase up to an aggregate of 1,604,400 shares of common stock, at $3.00 ($2.99 for one share of common stock and $0.01 for one warrant) (“combined offering price”), including 191,000 shares and 76,400 warrants sold pursuant to the partial exercise of the underwriters’ over-allotment option. The warrants have a per share exercise price of $3.50, are exercisable immediately, and expire on November 20, 2019. The gross proceeds to the Company from this offering, including the partial exercise of the over-allotment option but before deducting the underwriting discount and offering expenses, were $12.0 million. In connection with the offering, the Company granted to the underwriters a 45-day option to purchase up to 573,000 additional shares of common stock and up to 229,200 additional warrants to cover over-allotments, if any. On April 30, 2015, the Company closed on the underwriters’ exercise of its over-allotment option of 87,000 shares of common stock and 152,800 warrants for gross proceeds of $263,950.

In connection with the closing of this underwritten public offering, as partial compensation, on April 1, 2015, the Company granted up to 163,720 warrants to purchase common stock to its underwriters. These warrants have an exercise price of $3.44 (115% of the public offering price) and expire on March 27, 2020.