Subsequent Events	12 Months Ended
Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	(20) Subsequent Events A registration statement relating to the rights offering was filed with the U.S. Securities and Exchange Commission (“SEC”). Under the rights offering, Hemispherx distributed to its holders of common stock and to holders of certain options and warrants as of February 14, 2019, at no charge, one non-transferable subscription right for each share of common stock held or deemed held on the record date. Each right entitled the holder to purchase one unit, at a subscription price of $1,000 per unit, consisting of one share of Series B Convertible Preferred Stock with a face value of $1,000 (and immediately convertible into common stock at an assumed conversion price of $0.20) and 5,000 warrants with an assumed exercise price of $0.20. The warrants will be exercisable for five (5) years after the date of issuance. The funds realized from the offering were approximately $4.69 million. The $4.69 million received from the rights offering increased our net equity by this amount on the date the funds were received. On March 13, 2019, the Company and Iliad Research and Trading, L.P. (the “Lender”) amended the September 28, 2018 Secured Convertible Promissory Note (the “Convertible Note”) issued to the Lender. Pursuant to the amendment, the maturity date of the Convertible Note was extended from September 28, 2019 to September 28, 2020. In addition, the conversion and redemption rates were revised to a rate to be mutually agreed to by the Company and the Lender. In the event that the Company and the Lender are unable to reach agreement on such rate, the Company will be required to pay the redemption or conversion in cash. The amount of the Convertible Note that the Lender is entitled to redeem is limited to a maximum of $300,000 per calendar month. The price per share of the Company common stock has closed at or below $0.20 since February 26, 2019 and most recently closed on March 26, 2019 at $0.16, with a 30 day average of $0.19. On March 26, 2016, the Company received written notice from the NYSE American LLC (the “NYSE American”) that the Company is not in compliance with the continued listing standards set forth in Section 1003(f)(v) of the NYSE American Company Guide because the common stock has been selling for a low price per share for a substantial period of time. The NYSE American has determined that the continued listing of the Company’s common stock is predicated on the Company effecting a reverse stock split of the common stock or otherwise demonstrating sustained price improvement within a reasonable period of time. the Company has until September 26, 2019 to demonstrate compliance. The Company evaluated subsequent events through the date on which these financial statements were issued and determined that no subsequent event, other than the above, constituted a matter that required adjustment to the financial statements.

Subsequent Events

12 Months Ended

Dec. 31, 2018

(20) Subsequent Events

A registration statement relating to the rights offering was filed with the U.S. Securities and Exchange Commission (“SEC”). Under the rights offering, Hemispherx distributed to its holders of common stock and to holders of certain options and warrants as of February 14, 2019, at no charge, one non-transferable subscription right for each share of common stock held or deemed held on the record date. Each right entitled the holder to purchase one unit, at a subscription price of $1,000 per unit, consisting of one share of Series B Convertible Preferred Stock with a face value of $1,000 (and immediately convertible into common stock at an assumed conversion price of $0.20) and 5,000 warrants with an assumed exercise price of $0.20. The warrants will be exercisable for five (5) years after the date of issuance. The funds realized from the offering were approximately $4.69 million. The $4.69 million received from the rights offering increased our net equity by this amount on the date the funds were received.

On March 13, 2019, the Company and Iliad Research and Trading, L.P. (the “Lender”) amended the September 28, 2018 Secured Convertible Promissory Note (the “Convertible Note”) issued to the Lender. Pursuant to the amendment, the maturity date of the Convertible Note was extended from September 28, 2019 to September 28, 2020. In addition, the conversion and redemption rates were revised to a rate to be mutually agreed to by the Company and the Lender. In the event that the Company and the Lender are unable to reach agreement on such rate, the Company will be required to pay the redemption or conversion in cash. The amount of the Convertible Note that the Lender is entitled to redeem is limited to a maximum of $300,000 per calendar month.

The price per share of the Company common stock has closed at or below $0.20 since February 26, 2019 and most recently closed on March 26, 2019 at $0.16, with a 30 day average of $0.19. On March 26, 2016, the Company received written notice from the NYSE American LLC (the “NYSE American”) that the Company is not in compliance with the continued listing standards set forth in Section 1003(f)(v) of the NYSE American Company Guide because the common stock has been selling for a low price per share for a substantial period of time. The NYSE American has determined that the continued listing of the Company’s common stock is predicated on the Company effecting a reverse stock split of the common stock or otherwise demonstrating sustained price improvement within a reasonable period of time. the Company has until September 26, 2019 to demonstrate compliance.

The Company evaluated subsequent events through the date on which these financial statements were issued and determined that no subsequent event, other than the above, constituted a matter that required adjustment to the financial statements.