Subsequent Events	12 Months Ended
Dec. 31, 2013
Subsequent Events [Abstract]
Subsequent Events	14. Subsequent Events On January 16, 2014, the Company completed a public offering of 5,737,706 shares of the Company’s common stock at a price of $1.22 per share, resulting in net proceeds of approximately $6.4 million after deducting for placement agent fees and offering expenses. In connection with the offering, the Company issued 2,868,853 Series A Warrants and 2,868,853 Series B Warrants to the purchasers. Each Series A Warrant has an exercise price of $1.22 per share, and will become exercisable six months following the date of issuance and expire five years from the date of issuance. Each Series B Warrant has an exercise price of $1.22 per share, and will become exercisable six months following the date of issuance and expire 18 months from the date of issuance. In addition to the warrants issued to the purchasers, the Company also issued 86,066 of Series A Warrants and 86,066 of Series B Warrants to the placement agent as compensation for completing the offering. The warrants to the placement agent have the same terms, including exercise price, as the warrants issued to investors. The offering also triggered a reduction in the exercise price of 4,421,195 of the Company’s warrants from $1.60 to $1.22. On February 20, 2014, Sabby Healthcare Volatility Master Fund, Ltd. and Sabby Volatility Warrant Master Fund, Ltd., two purchasers in the January 2014 sale of securities, brought suit in the U.S. District Court for the Southern District of New York against the Company in an action captioned Sabby Healthcare Volatility Master Fund, Ltd. v. Cleveland Biolabs, Inc., No. 14-cv-1055 (S.D.N.Y.). The plaintiffs allege that the Company misrepresented the state of its funding negotiations with BARDA during the period leading up to the sale of the Securities, and as a result, the plaintiffs were harmed when the Company’s stock price declined following the announcement that BARDA had terminated negotiations with the Company. The complaint asserts claims under Section 10(b) of the Securities Exchange Act of 1934 and SEC Rule 10b-5, as well as claims for fraudulent inducement, breach of contract, and indemnification. The plaintiffs seek $2 million, plus interest, attorney’s fees, and litigation costs.

14. Subsequent Events

On January 16, 2014, the Company completed a public offering of 5,737,706 shares of the Company’s common stock at a price of $1.22 per share, resulting in net proceeds of approximately $6.4 million after deducting for placement agent fees and offering expenses. In connection with the offering, the Company issued 2,868,853 Series A Warrants and 2,868,853 Series B Warrants to the purchasers. Each Series A Warrant has an exercise price of $1.22 per share, and will become exercisable six months following the date of issuance and expire five years from the date of issuance. Each Series B Warrant has an exercise price of $1.22 per share, and will become exercisable six months following the date of issuance and expire 18 months from the date of issuance. In addition to the warrants issued to the purchasers, the Company also issued 86,066 of Series A Warrants and 86,066 of Series B Warrants to the placement agent as compensation for completing the offering. The warrants to the placement agent have the same terms, including exercise price, as the warrants issued to investors. The offering also triggered a reduction in the exercise price of 4,421,195 of the Company’s warrants from $1.60 to $1.22.

On February 20, 2014, Sabby Healthcare Volatility Master Fund, Ltd. and Sabby Volatility Warrant Master Fund, Ltd., two purchasers in the January 2014 sale of securities, brought suit in the U.S. District Court for the Southern District of New York against the Company in an action captioned Sabby Healthcare Volatility Master Fund, Ltd. v. Cleveland Biolabs, Inc., No. 14-cv-1055 (S.D.N.Y.). The plaintiffs allege that the Company misrepresented the state of its funding negotiations with BARDA during the period leading up to the sale of the Securities, and as a result, the plaintiffs were harmed when the Company’s stock price declined following the announcement that BARDA had terminated negotiations with the Company. The complaint asserts claims under Section 10(b) of the Securities Exchange Act of 1934 and SEC Rule 10b-5, as well as claims for fraudulent inducement, breach of contract, and indemnification. The plaintiffs seek $2 million, plus interest, attorney’s fees, and litigation costs.