SUBSEQUENT EVENTS	12 Months Ended
Dec. 31, 2019
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS Warrant Exchange During the first quarter of 2020, an aggregate of 1,539,424 warrants were exchanged for 1,847,309 shares of the Company’s common stock pursuant to the Exchange Agreements further described in Note 1—Summary of Significant Accounting Policies. Subsequent to the exchange, there were no April Warrants or Placement Agent Warrants outstanding. Warrant Extension and Tender Offer Effective February 6, 2020, the Company and the holders of the Company’s outstanding Short-Term Warrants amended the Short-Term Warrants to extend the exercise period of each Short-Term Warrant by six months. The Short-Term Warrants, as amended, are exercisable for up to an aggregate of 4,181,068 shares of the Company’s common stock, par value $0.0001 per share, until September 18, 2020. Except as specifically amended, all terms and conditions of each Short-Term Warrant remained in full force and effect and was not affected by this amendment. On February 12, 2020, the Company offered to amend outstanding warrants to purchase an aggregate of 12,346,631 shares of common stock (the “Original Warrants”) held by holders of certain outstanding warrants (the “Offer to Amend and Exercise”). The Original Warrants of eligible holders who elect to participate in the Offer to Amend and Exercise will be amended to (i) shorten the exercise period to expire concurrently with the closing of the RDD Merger and (ii) significantly reduce the exercise price per share. The amended warrants are required to be exercised for cash, and any cashless exercise provisions in the Original Warrants have been omitted. Additional Note On January 10, 2020, the Company entered into an additional securities purchase agreement and unsecured convertible promissory note with the Convertible Noteholder in the principal amount of $2,750,000 (the “Additional Note”). The Convertible Noteholder may elect to convert all or a portion of the Additional Note, at any time from time to time into the Company’s common stock at a conversion price of $3.25 per share, subject to adjustment for stock splits, dividends, combinations and similar events. The Company may prepay all or a portion of the Additional Note at any time for an amount equal to 115% of then outstanding obligations or the portion of the obligations we are prepaying. The purchase price of the Additional Note was $2.5 million and carries an original issuance discount of $250,000, which is included in the principal amount of the Additional Note. The Additional Note bears interest at the rate of 10% (which will increase to 18% upon and during the continuance of an event of default) per annum, compounding on a daily basis. All principal and accrued interest on the Additional Note is due on the second anniversary of the date of the Additional Note’s issuance. At any time after the six-month anniversary of the issuance of the Additional Note, (i) if the average VWAP of the Company’s common stock over twenty trading dates exceeds $10.00 per share, the Company may generally require that the Additional Note convert into share of its common stock at the $3.25 (as adjusted) conversion rate or (ii) 80% of the average of the five lowest VWAP of the Company’s common stock over the preceding twenty trading days. The Convertible Noteholder may not redeem more than $500,000 per calendar month during the period between the six-month anniversary of the date of issuance until the first anniversary of the date of issuance and $750,000 per calendar month thereafter. The obligation or right of the Company to deliver its shares upon the conversion or redemption of the Additional Note is subject to a 19.99% cap and subject to a floor price of $3.25 (unless waived by the Company). Any amounts redeemed or converted once the cap is reached or if the market price is less than the $3.25 floor price must be paid in cash. If there is an Event of Default under the Additional Note, the Convertible Noteholder may accelerate the Company’s obligations or the Convertible Noteholder may elect to increase the outstanding obligations under the Additional Note. The amount of the increase ranges from 15% for certain “Major Defaults,” 10% for failure to obtain the Convertible Noteholder’s approval for certain equity issuances with anti-dilution, price reset or variable pricing features of less than $2,500,000, and 5% for certain “Minor Defaults.” In addition, the Additional Note obligations will be increased if there are delays in the Company’s delivery requirements for the shares or cash issuable upon the conversion or redemption of the Additional Note in certain circumstances. If the Company issues convertible debt in the future with any terms, including conversion terms, that are more favorable to the terms of the Additional Note, the Convertible Noteholder may elect to incorporate the more favorable terms into the Additional Note. Termination of ATM Facility Effective March 19, 2020, the Company terminated the ATM facility. See Note 1—Summary of Significant Accounting Policies and Note 8—Stockholders’ Deficit for further detail on the ATM facility. Risks Related to COVID-19 Pandemic The recent outbreak of COVID-19 originated in Wuhan, China, in December 2019 and has since spread to multiple countries, including the United States and several European countries. On March 11, 2020, the World Health Organization declared the outbreak a pandemic. The COVID-19 pandemic is affecting the United States and global economies and may affect the Company’s operations and those of third parties on which the Company relies, including by causing disruptions in the supply of the Company’s product candidates and the conduct of current and future clinical trials. In addition, the COVID-19 pandemic may affect the operations of the Food and Drug Administration and other health authorities, which could result in delays of reviews and approvals, including with respect to the Company’s product candidates. The evolving COVID-19 pandemic is also likely to directly or indirectly impact the pace of enrollment in the Company’s Phase 3 registration trials for INN-202 for at least the next several months and possibly longer as patients may avoid or may not be able to travel to healthcare facilities and physicians’ offices unless due to a health emergency. Such facilities and offices may also be required to focus limited resources on non-clinical trial matters, including treatment of COVID-19 patients, and may not be available, in whole or in part, for clinical trial services related to INN-202 or the Company’s other product candidates. Additionally, while the potential economic impact brought by, and the duration of, the COVID-19 pandemic is difficult to assess or predict, the impact of the COVID-19 pandemic on the global financial markets may reduce the Company’s ability to access capital, which could negatively impact the Company’s short-term and long-term liquidity and the Company’s and RDD’s ability to complete the RDD Merger and RDD Merger Financing on a timely basis or at all. The ultimate impact of the COVID-19 pandemic is highly uncertain and subject to change. The Company does not yet know the full extent of potential delays or impacts on its business, financing or clinical trial activities or on healthcare systems or the global economy as a whole. However, these effects could have a material impact on the Company’s liquidity, capital resources, operations and business and those of the third parties on which we rely.

SUBSEQUENT EVENTS

Warrant Exchange

During the first quarter of 2020, an aggregate of 1,539,424 warrants were exchanged for 1,847,309 shares of the Company’s common stock pursuant to the Exchange Agreements further described in Note 1—Summary of Significant Accounting Policies. Subsequent to the exchange, there were no April Warrants or Placement Agent Warrants outstanding.

Warrant Extension and Tender Offer

Effective February 6, 2020, the Company and the holders of the Company’s outstanding Short-Term Warrants amended the Short-Term Warrants to extend the exercise period of each Short-Term Warrant by six months. The Short-Term Warrants, as amended, are exercisable for up to an aggregate of 4,181,068 shares of the Company’s common stock, par value $0.0001 per share, until September 18, 2020. Except as specifically amended, all terms and conditions of each Short-Term Warrant remained in full force and effect and was not affected by this amendment.

On February 12, 2020, the Company offered to amend outstanding warrants to purchase an aggregate of 12,346,631 shares of common stock (the “Original Warrants”) held by holders of certain outstanding warrants (the “Offer to Amend and Exercise”). The Original Warrants of eligible holders who elect to participate in the Offer to Amend and Exercise will be amended to (i) shorten the exercise period to expire concurrently with the closing of the RDD Merger and (ii) significantly reduce the exercise price per share. The amended warrants are required to be exercised for cash, and any cashless exercise provisions in the Original Warrants have been omitted.

Additional Note

On January 10, 2020, the Company entered into an additional securities purchase agreement and unsecured convertible promissory note with the Convertible Noteholder in the principal amount of $2,750,000 (the “Additional Note”). The Convertible Noteholder may elect to convert all or a portion of the Additional Note, at any time from time to time into the Company’s common stock at a conversion price of $3.25 per share, subject to adjustment for stock splits, dividends, combinations and similar events. The Company may prepay all or a portion of the Additional Note at any time for an amount equal to 115% of then outstanding obligations or the portion of the obligations we are prepaying. The purchase price of the Additional Note was $2.5 million and carries an original issuance discount of $250,000, which is included in the principal amount of the Additional Note.

The Additional Note bears interest at the rate of 10% (which will increase to 18% upon and during the continuance of an event of default) per annum, compounding on a daily basis. All principal and accrued interest on the Additional Note is due on the second anniversary of the date of the Additional Note’s issuance.

At any time after the six-month anniversary of the issuance of the Additional Note, (i) if the average VWAP of the Company’s common stock over twenty trading dates exceeds $10.00 per share, the Company may generally require that the Additional Note convert into share of its common stock at the $3.25 (as adjusted) conversion rate or (ii) 80% of the average of the five lowest VWAP of the Company’s common stock over the preceding twenty trading days. The Convertible Noteholder may not redeem more than $500,000 per calendar month during the period between the six-month anniversary of the date of issuance until the first anniversary of the date of issuance and $750,000 per calendar month thereafter. The obligation or right of the Company to deliver its shares upon the conversion or redemption of the Additional Note is subject to a 19.99% cap and subject to a floor price of $3.25 (unless waived by the Company). Any amounts redeemed or converted once the cap is reached or if the market price is less than the $3.25 floor price must be paid in cash.

If there is an Event of Default under the Additional Note, the Convertible Noteholder may accelerate the Company’s obligations or the Convertible Noteholder may elect to increase the outstanding obligations under the Additional Note. The amount of the increase ranges from 15% for certain “Major Defaults,” 10% for failure to obtain the Convertible Noteholder’s approval for certain equity issuances with anti-dilution, price reset or variable pricing features of less than $2,500,000, and 5% for certain “Minor Defaults.” In addition, the Additional Note obligations will be increased if there are delays in the Company’s delivery requirements for the shares or cash issuable upon the conversion or redemption of the Additional Note in certain circumstances.

If the Company issues convertible debt in the future with any terms, including conversion terms, that are more favorable to the terms of the Additional Note, the Convertible Noteholder may elect to incorporate the more favorable terms into the Additional Note.

Termination of ATM Facility

Effective March 19, 2020, the Company terminated the ATM facility. See Note 1—Summary of Significant Accounting Policies and Note 8—Stockholders’ Deficit for further detail on the ATM facility.

Risks Related to COVID-19 Pandemic

The recent outbreak of COVID-19 originated in Wuhan, China, in December 2019 and has since spread to multiple countries, including the United States and several European countries. On March 11, 2020, the World Health Organization declared the outbreak a pandemic. The COVID-19 pandemic is affecting the United States and global economies and may affect the Company’s operations and those of third parties on which the Company relies, including by causing disruptions in the supply of the Company’s product candidates and the conduct of current and future clinical trials. In addition, the COVID-19 pandemic may affect the operations of the Food and Drug Administration and other health authorities, which could result in delays of reviews and approvals, including with respect to the Company’s product candidates. The evolving COVID-19 pandemic is also likely to directly or indirectly impact the pace of enrollment in the Company’s Phase 3 registration trials for INN-202 for at least the next several months and possibly longer as patients may avoid or may not be able to travel to healthcare facilities and physicians’ offices unless due to a health emergency. Such facilities and offices may also be required to focus limited resources on non-clinical trial matters, including treatment of COVID-19 patients, and may not be available, in whole or in part, for clinical trial services related to INN-202 or the Company’s other product candidates. Additionally, while the potential economic impact brought by, and the duration of, the COVID-19 pandemic is difficult to assess or predict, the impact of the COVID-19 pandemic on the global financial markets may reduce the Company’s ability to access capital, which could negatively impact the Company’s short-term and long-term liquidity and the Company’s and RDD’s ability to complete the RDD Merger and RDD Merger Financing on a timely basis or at all. The ultimate impact of the COVID-19 pandemic is highly uncertain and subject to change. The Company does not yet know the full extent of potential delays or impacts on its business, financing or clinical trial activities or on healthcare systems or the global economy as a whole. However, these effects could have a material impact on the Company’s liquidity, capital resources, operations and business and those of the third parties on which we rely.