Avenue Therapeutics, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Related Party Agreements (Details Textual)

Related Party Agreements (Details Textual) - USD ($)				1 Months Ended				12 Months Ended
Related Party Agreements (Details Textual) - USD ($)	Jul. 05, 2017	May 15, 2017	Sep. 13, 2016	Jun. 26, 2017	Jun. 25, 2017	Sep. 30, 2016	Feb. 17, 2015	Dec. 31, 2018	Dec. 31, 2017	May 17, 2017	Dec. 31, 2016	Mar. 15, 2015
Agreement Description Terms								(i) issue annually to Fortress, on the anniversary date of the Founders Agreement, shares of common stock equal to two and one half percent (2.5%) of the fully-diluted outstanding equity of Avenue at the time of issuance; (ii) pay an equity fee in shares of Avenue common stock, payable within five (5) business days of the closing of any equity or debt financing for Avenue or any of its respective subsidiaries that occurs after the effective date of the Founders Agreement and ending on the date when Fortress no longer has majority voting control in Avenue’s voting equity, equal to two and one half percent (2.5%) of the gross amount of any such equity or debt financing; and (iii) pay a cash fee equal to four and one half percent (4.5%) of Avenue’s annual net sales, payable on an annual basis, within ninety (90) days of the end of each calendar year. In the event of a change in control (as it is defined in the Founders Agreement), Fortress will be paid a one-time change in control fee equal to five (5x) times the product of (i) net sales for the twelve (12) months immediately preceding the change in control and (ii) four and one-half percent (4.5%).
Stock Issued During Period, Value, New Issues								$ 0	$ 948,000
Stockholders' Equity, Period Increase (Decrease)									632,000
Deferred Offering Costs								1,702,000	0
Debt Instrument, Periodic Payment, Principal					$ 3,500,000
Debt Instrument, Periodic Payment, Interest					$ 100,000
Service Agreement Expenses								400,000	500,000
Extend Loan Modification, Reduction to interest Expense								300,000
IPO [Member]
Number of shares Exchanged				158,125
Financing Fee				$ 0.9
Common Stock [Member]
Stock Issued During Period, Value, New Issues								0	0
Stockholders' Equity, Period Increase (Decrease)									0
Fortress Note [Member]
Debt Instrument, Interest Rate, Stated Percentage												8.00%
Interest Expense, Debt				$ 300,000				0	74,000
Fortress Note [Member] \| Maximum [Member]
Annual Consulting Fee								$ 400,000
Debt Instrument, Interest Rate, Stated Percentage								8.00%		8.00%
Fortress Note [Member] \| Minimum [Member]
Annual Consulting Fee								$ 100,000
Debt Instrument, Interest Rate, Stated Percentage								2.00%		2.00%
Fortress Note [Member] \| IPO [Member]
Stockholders' Equity, Period Increase (Decrease)		$ 500,000
Percentage Of Conversion Shares				2.50%
NSC Notes Memebers [Member]
Long-term Debt, Gross							$ 3,000,000	$ 0	$ 0		$ 3,000,000
Debt Instrument, Periodic Payment, Interest	$ 2,000
NSC Notes Memebers [Member] \| IPO [Member]
Stock Issued During Period, Value, New Issues				$ 125,000
Deferred Offering Costs				3,000,000
National Holdings, Inc. [Member]
Long-term Debt						$ 3,000,000
Business Acquisition, Percentage of Voting Interests Acquired						56.60%
Placement Fee, Percentage						10.00%
Debt Instrument, Periodic Payment, Principal						$ 3,000,000
Debt Instrument, Periodic Payment, Interest						$ 2,000
National Holdings, Inc. [Member] \| IPO [Member]
Earnings of commission and fees				2,300,000
Asset Management Income [Member]
Annual Consulting Fee				500,000
Increase In Annual Consulting Fee							1,000,000
Excess In Net Assets Value							100,000,000
Asset Management Income [Member] \| IPO [Member]
Stock Issued During Period, Value, New Issues				166,666
Due to Related Parties, Current				$ 1,000,000
Shares Issued, Price Per Share				$ 6.00
AR Founders Agreement [Member]
Amended Founders Agreements Terms			15 years
AR Founders Agreement [Member] \| Common Stock [Member]
Number of shares Exchanged			2,500,000
Fortress Biotech, Inc [Member]
Long-term Debt, Gross							$ 3,000,000
Preferred Class A [Member] \| AR Founders Agreement [Member]
Number of shares Exchanged			250,000
Common Class A [Member] \| AR Founders Agreement [Member]
Number of shares Exchanged			2,300,000