Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands | Jul. 03, 2018 | Jul. 02, 2018 | Jun. 28, 2018 | Apr. 02, 2018 | Mar. 28, 2018 | Mar. 02, 2018 | Feb. 26, 2018 | Feb. 21, 2018 | Feb. 21, 2018 | Feb. 07, 2018 | Jan. 08, 2018 | Dec. 02, 2017 | Mar. 14, 2017 | Mar. 08, 2017 | Jul. 07, 2016 | Mar. 28, 2011 | Feb. 28, 2018 | Jun. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Oct. 24, 2018 | Jun. 29, 2018 | Mar. 31, 2018 | Nov. 28, 2017 | Sep. 28, 2016 | May 24, 2016 | Sep. 09, 2015 | Dec. 16, 2013 |
Common stock, par value | | | | | | | | | | | | | | | | | | | | $ 0.0001 | $ 0.0001 | | | | | | | | |
Common stock, shares issued | | | | | | | | | | | | | | | | | | | | 38,408,953 | 1,483,556 | | | | | | | | |
Common stock, shares outstanding | | | | | | | | | | | | | | | | | | | | 38,408,953 | 1,483,556 | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | | | | | 40,746,189 | | | | | | | | | |
Conversion stock shares converted | | | | | | | | | | | | | | | | | | | | 4,641,185 | | | | | | | | | |
Warrant exercise price | | | | | | | | | | | | | | | | | | | | $ 1.25 | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | | | | | | | | | | | $ 15,827 | | | | | | | | | |
Fair value of embedded derivative | | | | | | | | | | | | | $ 66 | | | | | | | | | | | | | | | | |
Common stock shares authorized | | | | | | | | | | | | | | | | | | | | 150,000,000 | 150,000,000 | | | | | | | | |
Accretion of the redeemable preferred shares | | | | | | | | | | | | | | | | | | | | $ (438) | | | | | | | | | |
Aggregate intrinsic value of the total exercisable warrants and options | | | | | | | | | | | | | | | | | | | | $ 1 | | | | | | | | | |
Outstanding pre-funded warrants are exercisable into shares of common stock | | | | | | | | | | | | | | | | | | | | 1,601,666 | | | | | | | | | |
Capital stock shares authorized | | | | | | | | | | | | | | | | | | | | 155,000,000 | | | | | | | | | |
Capital stock par value | | | | | | | | | | | | | | | | | | | | $ 0.0001 | | | | | | | | | |
Weighted average of the remaining contractual life | | | | | | | | | | | | | | | | | | | | 7 years 6 months 25 days | | | | | | | | | |
Weighted average exercise price | | | | | | | | | | | | | | | | | | | | | $ 24.85 | | | | | | | | |
Umbrella Plan [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock option plan expiration date | | | | | | | | | | | | | | | | | Mar. 27, 2021 | | | | | | | | | | | | |
Number of common stock awards reserve for future issuance | | | | | | | | | | | | | | | | | 572 | | | 310 | | | | | | | | | |
Employee and Non-employee Stock Options [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Weighted average of the remaining contractual life | | | | | | | | | | | | | | | | | | | | 6 months 18 days | | | | | | | | | |
Unvested stock-based compensation | | | | | | | | | | | | | | | | | | | | $ 38 | | | | | | | | | |
Chief Executive Officer [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock option granted | | | | | | | | | | | | | | | | | | | | 0 | 118 | | | | | | | | |
Exercise price range lower limit | | | | | | | | | | | | | | | | | | | | $ 24.85 | $ 24.85 | | | | | | | | |
Exercise price range upper limit | | | | | | | | | | | | | | | | | | | | $ 34.65 | $ 34.65 | | | | | | | | |
Stock option vesting period | | | | | | | | | | | | | | | | | | | | 3 years | 3 years | | | | | | | | |
Fair value of stock option | | | | | | | | | | | | | | | | | | | | $ 3 | $ 3 | | | | | | | | |
Chief Executive Officer [Member] | 2013 Plan [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of common stock awards reserve for future issuance | | | | | | | | | | | | | | | | | | | | 8,910,610 | | | | | | | | | 572 |
Stock option vested number of grant, shares | | | | | | | | | | | | | | | | | | | | 8,919,737 | | 8,900,000 | | | | 7,200 | 11,428 | 537 | |
Employees and Directors [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock option granted | | | | | | | | | | | | | | | | | | | | 0 | 118 | | | | | | | | |
Exercise price range lower limit | | | | | | | | | | | | | | | | | | | | $ 24.85 | $ 24.85 | | | | | | | | |
Exercise price range upper limit | | | | | | | | | | | | | | | | | | | | $ 34.65 | $ 34.65 | | | | | | | | |
Stock option vesting period | | | | | | | | | | | | | | | | | | | | 3 years | 3 years | | | | | | | | |
Fair value of stock option | | | | | | | | | | | | | | | | | | | | $ 3 | $ 3 | | | | | | | | |
Series D Purchase Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | $ 3 | | | | | | | | | | | | | | | | | | | | | | |
Sale of stock stated value per share, description | | | | | | | | | Qualified Offering on a $1.00 per stated value for $1.00 new subscription amount basis (subject to the beneficial ownership limitation set forth in the certificate of designation for the Series C Preferred Stock). | | | | | | | | | | | | | | | | | | | | |
Sale of stock, offering percentage | | | | | | | | | 15.00% | | | | | | | | | | | 15.00% | | | | | | | | | |
Series D Purchase Agreement [Member] | Series D Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost | | | | | $ 300 | | | | | | | | | | | | | | | | | | | | | | | | |
SPA Amendment [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | $ 3,200 | | | | | | | | | | | | | | | | | | | |
Fair value of embedded derivative | | | | | | | | | $ 620 | 620 | | | | | | | | | | | | | | | | | | | |
Amount of redeemable preferred stock | | | | | | | | | | $ 2,580 | | | | | | | | | | | | | | | | | | | |
Waiver Agreement [Member] | Series D Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost | | | | | | | | $ 7,000 | | | | | | | | | | | | | | | | | | | | | |
Sale of stock, offering percentage | | | | | | | | 15.00% | | | | | | | | | | | | | | | | | | | | | |
Offering description | | | | | | | | (i) the Series D Exchange Right would not be applicable to an offering of up to $7,000,000 which occurred no later than March 9, 2018, (ii) the Company shall reduce the conversion price of the Series D Preferred Stock to the public offering price of our common stock in such offering, and (iii) instead of using 15% of the proceeds from such offering to redeem shares of Series C Preferred Stock held by the Series D Investor, the Company shall use 15% of the proceeds from such offering to redeem a portion of the outstanding shares of Series D Preferred Stock held by the Series D Investor at a per share purchase price equal to the stated value of the Series D Preferred Stock. | | | | | | | | | | | | | | | | | | | | | |
Letter Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Accretion of the redeemable preferred shares | | | | | | | | | | | | | | | | | | | $ 438 | | | | | | | | | | |
Letter Agreement [Member] | Series D Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Sale of stock stated value per share, description | | | | Qualified Offering on a $1.00 per stated value for $1.00 new subscription amount basis, all outstanding shares of Series C Preferred Stock held by the Series D Investor will be redeemed at a per share purchase price equal to the stated value of the Series C Preferred Stock | | | | | | | | | | | | | | | | | | | | | | | | | |
Series A Warrants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | | | 1,545 | | | | | | | | | | | |
Common Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue | | | | | | | 1,000,000 | | | | | | | | | | | | | 35,588,810 | | | | | | | | | |
Gross proceeds from offering, cost | | | | | | | $ 3,000 | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | | | | | | | | | | | $ 4 | | | | | | | | | |
Stock issued price per shares | | | | | | | | | | | | | | | | | | | | | | | | $ 3 | | | | | |
Accretion of the redeemable preferred shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of redeemable preferred stock | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Underwriter Warrants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | 60,000 | | | | | | | | | | | | | | | | | | | | | | |
Warrant exercise price | | | | | | | $ 3.75 | | | | | | | | | | | | | | | | | | | | | | |
Offering description | | | | | | | The Company issued to the underwriter warrants to purchase up to 60,000 shares of common stock, or 6% of the number of shares of common stock sold in the offering (the March Underwriter Warrants). The March Underwriter Warrants are exercisable at any time and from time to time, in whole or in part, following the date of issuance and ending February 27, 2023, at a price per share equal to $3.75 (125% of the offering price to the public per share). | | | | | | | | | | | | | | | | | | | | | | |
Percentage for shares of common stock sold | | | | | 6.00% | | 6.00% | | | | | | | | | | | | | | | | | | | | | | |
Percentage for gross proceeds of offering | | | | | 125.00% | | 125.00% | | | | | | | | | | | | | | | | | | | | | | |
Series D Warrants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Common units, per share | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | | | | |
Pre-funded units, per share | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | | | | |
Warrant [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue | | | | | | | | | | | | | | | | | | | | 20,880,250 | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | | | | | | | | | | | $ 208,803 | | | | | | | | | |
Exercise of pre-funded warrants | | | | | | | | | | | | | | | | | | | | 20,880,250 | | | | | | | | | |
Preferred Stock Blank Check [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock shares authorized | | | | | | | | | | | | | | | | | | | | 5,000,000 | | | | | | | | | |
Maximum [Member] | Underwriter Warrants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | 171,429 | | | | | | | | | | | | | | | | | | | | | | | | |
Stock issued price per shares | | | | | $ 2.1875 | | | | | | | | | | | | | | | | | | | | | | | | |
March 2017 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost | | | | | | | | | | | | | | $ 6,800 | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost percentage | | | | | | | | | | | | | | 8.00% | | | | | | | | | | | | | | | |
July 2016 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of exercised options to purchase shares | | | | | | | | | | | | | | | | | | 13,508 | | | | | | | | | | | |
Public Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue | | | | | 2,857,143 | | | | | | | | | | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost | | | | | $ 5,000 | | | | | | | | | | | | | | | | | | | | | | | | |
Stock issued price per shares | | | | | $ 1.75 | | | | | | | | | | | | | | | | | | | | | | | | |
Qualified Offering [Member] | Series D Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Due from affiliates | | | | $ 3,000 | | | | | | | | | | | | | | | | | | | | | | | | | |
July 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost | | $ 9,800 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
July 2018 Offering [Member] | Letter Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Amount utilized for redemption of outstanding shares | | $ 2,264,269 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
July 2018 Offering [Member] | Underwriting Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Common stock, par value | | | | | | | | | | | | | | | | | | | | | | | $ 0.0001 | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | | | | | | | | 4,999,999 | | | | | | |
Warrant exercise price | | | | | | | | | | | | | | | | | | | | | | | $ 0.29 | | | | | | |
Common units, shares | | | | | | | | | | | | | | | | | | | | | | | 10,851,417 | | | | | | |
Pre-funded units, shares | | | | | | | | | | | | | | | | | | | | | | | 22,481,916 | | | | | | |
Common units, per share | | | | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | |
Pre-funded units, per share | | | | | | | | | | | | | | | | | | | | | | | 0.29 | | | | | | |
Underwriting discount and commission price per shares | | | | | | | | | | | | | | | | | | | | | | | $ 0.0203 | | | | | | |
July 2018 Offering [Member] | Common Stock [Member] | Underwriting Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | | | | | | | | 4,999,999 | | | | | | |
July 2018 Offering [Member] | Underwriter Warrants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock issued price per shares | | $ 0.375 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage for shares of common stock sold | | 6.00% | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage for gross proceeds of offering | | 125.00% | | | | | | | | | | | | | | | | | | | | | | | | | | | |
July 2018 Offering [Member] | Series D Warrants [Member] | Underwriting Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | | | | | | | | 4,999,999 | | | | | | |
Underwriting discount and commission price per shares | | | | | | | | | | | | | | | | | | | | | | | $ 0.0007 | | | | | | |
July 2018 Offering [Member] | Maximum [Member] | Underwriter Warrants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | 2,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
July 2018 Offering [Member] | Maximum [Member] | Series D Warrants [Member] | Underwriting Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Common stock, par value | | | | | | | | | | | | | | | | | | | | | | | $ 0.01 | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | | | | | | | | 4,999,999 | | | | | | |
Common stock shares authorized | | | | | | | | | | | | | | | | | | | | | | | 4,999,999 | | | | | | |
Secretary of State of Delaware a Certificate of Amendment [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Reverse stock split | | | | | | | | | | | one-for-thirty-five reverse stock split. | | | | | | | | | | | | | | | | | | |
Common stock, par value | | | | | | | | | | | $ 0.0001 | | | | | | | | | | | | | | | | | | |
Common stock, shares issued | | | | | | | | | | | 51,900,000 | | | | | | | | | | | | | | | | | | |
Common stock, shares outstanding | | | | | | | | | | | 1,500,000 | | | | | | | | | | | | | | | | | | |
Series B Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | | | | | | | | | | | | | | 17,303 | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | | | | | | | | 3,330,828 | 284,446 | | | | | | | | |
Shares issued during the period new issue | | | | | | | | | | | | | | | | | | | | 442,424 | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | | | | |
Number of exercised options to purchase shares | | | | | | | | | | | | | | | | | | 13,508 | | | | | | | | | | | |
Proceeds from placement agent | | | | | | | | | | | | | | | | | | $ 557,205 | | | | | | | | | | | |
Accretion of the redeemable preferred shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of redeemable preferred stock | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Series B Convertible Preferred Stock [Member] | Maximum [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible stock price, percentage | | | | | | | | | | | | | | | | | | | | | 10.00% | | | | | | | | |
Series B Convertible Preferred Stock [Member] | July 2016 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | | | | | | | | | 311,521 | | | | | | | | | | | | | | |
Shares issued during the period new issue | | | | | | | | | | | | | | | 258,952 | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | | $ 56 | | $ 288.75 | | | | $ 0.30 | | | | | | | | | |
Number of common stock shares sold | | | | | | | | | | | | | | | | 442,424 | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | 50,620 | | | | | | | | | | | | | |
Share price | | | | | | | | | | | | | | | | $ 33 | | | | | | | | | | | | | |
Conversion stock shares converted | | | | | | | | | | | | | | 0.589 | | 0.114 | | | | 110 | | | | | | | | | |
Percentage of cumulative dividend rate | | | | | | | | | | | | | | | | | | | | 15.00% | | | | | | | | | |
Gross proceeds from offering, cost | | | | | | | | | | | | | | | | $ 14,600 | | | | | $ 8,000 | | | | | | | | |
Warrant exercise term | | | | | | | | | | | | | | | | | | | | | 5 years | | | | | | | | |
Warrant exercise price | | | | | | | | | | | | | | | | | | | | | $ 175 | | | | | | | | |
Option issued to purchase of shares percentage | | | | | | | | | | | | | | | | 3.50% | | | | | | | | | | | | | |
Option issued exercise price percentage | | | | | | | | | | | | | | | | 125.00% | | | | | | | | | | | | | |
Series B Convertible Preferred Stock [Member] | March 2017 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | | $ 56 | | | | | | | | | | | | | | | |
Series B Convertible Preferred Stock [Member] | Private Placements [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | 1,306,536 | | | | | | | | | | | | 180,992 | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | $ 7 | | | | | | | | | | | | | | | | |
Series C Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | | | | | | | | | | | | | | 61,423 | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | | | | | | | | 1,310,357 | | | | | | | | | |
Shares issued during the period new issue | | | | | | | | | | | | | | | | | | | | 1,069,822 | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | | | | |
Accretion of the redeemable preferred shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of redeemable preferred stock | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Series C Convertible Preferred Stock [Member] | March 2017 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | | | | | | | | 1,310,357 | | | | | | | | | |
Number of common stock shares sold | | | | | | | | | | | | | | 1,069,822 | | | | | | | | | | | | | | | |
Share price | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | | | | |
Conversion stock shares converted | | | | | | | | | | | | | | 0.114 | | | | | | | | | | | | | | | |
Warrant exercise price | | | | | | | | | | | | | | $ 6.40 | | | | | | | | | | | | | | | |
Series D Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Series D Convertible Preferred Stock [Member] | Redemption Obligation [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost percentage | | | | | | | | | | | | | 12.50% | | | | | | | | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | | | | $ 1,000 | | | | | | | | | | | | | | | | |
Series D Convertible Preferred Stock [Member] | Redemption Obligation [Member] | Maximum [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | | | | $ 1,500 | | | | | | | | | | | | | | | | |
Series D Convertible Preferred Stock [Member] | Private Placements [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue | | | | | | | | | | | | | 750 | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | $ 7 | | | | | | | | | | | | | | | | |
Conversion stock shares converted | | | | | | | | | | | | | 142.86 | | | | | | | 42,677 | | | | | | | | | |
Proceeds from sale of stock | | | | | | | | | | | | | $ 750 | | | | | | | | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | | | | $ 1 | | | | | | | | | | | | | | | | |
Common shares outstanding percentage | | | | | | | | | | | | | 20.00% | | | | | | | 19.99% | | | | | | | | | |
Sale of stock stated value per share, description | | | | | | | | | | | | | | | | | | | | In addition, the SPA contains a "most favored nation" provision, which provides that, until the Company consummates a "Qualified Offering", in the event the Company undertakes, or enter into any agreement to undertake, the issuance and sale of common stock and/or common stock equivalents to third party investors for cash (a "Subsequent Financing"), the Series D Investor may elect, in its sole discretion, to exchange all or some of the Series D Preferred Stock then held by such investor for any securities or units issued in such Subsequent Financing on a $1.00 per stated value for $1.00 new subscription amount basis (the "MFN Adjustment"). | | | | | | | | | |
Series D Convertible Preferred Stock [Member] | Private Placements [Member] | Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares issued during the period new issue value | | | | | | | | | | | | | $ 1 | | | | | | | | | | | | | | | | |
Sale of stock stated value per share, description | | | | | | | | | | | | | The Series D Investor also had the option to exchange their Series D Preferred Stock into the securities issued in a Qualified Offering upon consummation of a Qualified Offering on a $1.00 per stated value for $1.00 new subscription amount basis. | | | | | | | | | | | | | | | | |
Series B Warrants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | | | | | | | 122,269 | | | | | | | | | |
Warrant exercise price | | | | | | | | | | | | | | | | | | | | $ 70 | | | | | | | | | |
Series B Warrants [Member] | March 2017 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | 122,269 | | | | | | | | | | | | | | | |
Warrant exercise price | | | | | | | | | | | | | | $ 70 | | | | | | | | | | | | | | | |
Series C Warrants [Member] | March 2017 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of warrants to purchase common stock | | | | | | | | | | | | | | 122,269 | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost percentage | | | | | | | | | | | | | | 3.00% | | | | | | | | | | | | | | | |
Redeemable Preferred Shares [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Fair value of embedded derivative | | | | | | | | | | | | | $ 934 | | | | | | | | | | | | | | | | |
Series D Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | | | | | | | | | 206,105 | | | | | | | | |
Shares issued during the period new issue | | | | | | | | | | | | 8,295 | | | | | | | | | 8,295 | | | | | | | | |
Series B Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Percentage of cumulative dividend rate | | | | | | | | | | | | | | | | | | | | 15.00% | | | | | | | | | |
Fair value of embedded derivative | | | | | | | | | | | | | | | | | | | | | $ 0 | | | | | | | | |
Series B Convertible Preferred Stock [Member] | Redemption Obligation [Member] | Maximum [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of preferred shares converted into common stock | | | | | | | | | | | | $ 0 | | | | | | | | | $ 274 | | | | | | | | |
Series B Convertible Preferred Stock [Member] | Qualified Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Sale of stock stated value per share, description | | | Series B Convertible Preferred Stock into securities issued in a Qualified Offering on a $1.00 per stated value for $1.00 new subscription amount basis upon a Qualified Offering. | | | | | | | | | | | | | | | | | | | | | | | | | | |
Series B Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | | | | | | | | | | | | | | 17,303 | | | 17,303 | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | | | | | | 111,443 | | | | | 2,759,829 | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | |
Conversion stock shares converted | [1] | | | | | | | | | | | | | | | | | | | 3,330,828 | | | | | | | | | |
Series B Preferred Stock [Member] | March 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | 17,303 | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | 190,333 | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | $ 3 | | | | | | | | | | | | | | | | | | | | | | |
Series B Preferred Stock [Member] | April 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | 17,303 | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | 237,916 | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | $ 1.75 | | | | | | | | | | | | | | | | | | | | | | | |
Series D Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | 300 | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | 71,429 | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | $ 1.75 | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock description | | | | | The fair value increased substantially, i.e by more than 10%, the change in terms was accounted for as an extinguishment. | | The fair value increased substantially, i.e by more than 10%, the change in terms was accounted for as an extinguishment. | | | | | | | | | | | | | | | | | | | | | | |
Changes in carrying amount | | | | | $ 32 | | $ 49 | | | | | | | | | | | | | | | | | | | | | | |
Accretion of the redeemable preferred shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of redeemable preferred stock | | | | | | | | | | | | | | | | | | | | 750 | | | | | | | | | |
Series D Preferred Stock [Member] | SPA Amendment and Waiver Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | $ 3 | | $ 7 | | | | | | | | | | | | | | | | | | | | | | |
Offering description | | | | | | | 15% of the gross proceeds from the offering | | | | | | | | | | | | | | | | | | | | | | |
Payments to acquire shares | | | | | | | $ 450 | | | | | | | | | | | | | | | | | | | | | | |
Number of shares purchased | | | | | | | 450 | | | | | | | | | | | | | | | | | | | | | | |
Series D Preferred Stock [Member] | March 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | 750 | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | 142,857 | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | $ 3 | | | | | | | | | | | | | | | | | | | | | | |
Series D Preferred Stock [Member] | July 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of redeemable preferred stock | | 300 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Series C Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | | | | | | | | | | | | | | 61,423 | | | 378,840 | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | | | | | | | | | | | | | | | | | 6,696,448 | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | | | | | | | | | | | | | | | | | $ 0.30 | | | | | | |
Conversion stock shares converted | | | | | | | | | | | | | | | | | | | | 1,310,357 | | | | | | | | | |
Series C Preferred Stock [Member] | Series D Purchase Agreement [Member] | Series D Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Conversion stock shares converted | | | | | 46,875 | | | | | | | | | | | | | | | | | | | | | | | | |
Series C Preferred Stock [Member] | Second Waiver Agreement [Member] | Series D Investor [Member] | Planned April 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Gross proceeds from offering, cost | | | | | | $ 5,000 | | | | | | | | | | | | | | | | | | | | | | | |
Offering description | | | | | | (i) the Series D Exchange Right would not be applicable to a subsequent financing consisting solely of shares of common stock, which shall be publicly registered on Form S-3 for gross proceeds to us of up to $5,000,000, to be consummated by not later than April 3, 2018 (the Planned April 2018 Offering), (ii) the Company's obligation to use 15% of the proceeds from any subsequent offering of our securities that is not a Qualified Offering to redeem the outstanding shares of the Series C Preferred Stock held by the Series D Investor would not be applicable to the Planned April 2018 Offering, (iii) the Company shall reduce the conversion price of the Series D Preferred Stock to the public offering price of our common stock sold in the Planned April 2018 Offering, and (iv) the Company shall use $300,000 of the proceeds from the Planned April 2018 Offering to redeem outstanding shares of Series C Preferred Stock held by the Series D Investor at a per share purchase price equal to the stated value of the Series C Preferred Stock. | | | | | | | | | | | | | | | | | | | | | | | |
Amount utilized for redemption of outstanding shares | | | | | | $ 300 | | | | | | | | | | | | | | | | | | | | | | | |
Series C Preferred Stock [Member] | March 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | | 741,651 | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | | 1,497,427 | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | | $ 3 | | | | | | | | | | | | | | | | | | | | | | |
Series C Preferred Stock [Member] | April 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred stock, shares outstanding | | | | | | 451,695 | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock shares issued upon conversion | | | | | | 688,297 | | | | | | | | | | | | | | | | | | | | | | | |
Convertible preferred stock conversion price per share | | | | | | $ 1.75 | | | | | | | | | | | | | | | | | | | | | | | |
Series C Preferred Stock [Member] | July 2018 Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of redeemable preferred stock | | 306,917 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Restricted Stock [Member] | Employees and Directors [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock option granted | | | | | | | | | | | | | | | | | | | | 0 | 84 | | | | | | | | |
Stock option vesting period | | | | | | | | | | | | | | | | | | | | 3 years | 3 years | | | | | | | | |
Fair value of stock option | | | | | | | | | | | | | | | | | | | | $ 3 | $ 3 | | | | | | | | |
Restricted Stock [Member] | Chief Executive Officer [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock option granted | | | | | | | | | | | | | | | | | | | | 0 | 84 | | | | | | | | |
Stock option vesting period | | | | | | | | | | | | | | | | | | | | 3 years | 3 years | | | | | | | | |
Fair value of stock option | | | | | | | | | | | | | | | | | | | | $ 3 | $ 3 | | | | | | | | |
| |
[1] | Including the shares of common stock the holders of Series B Convertible Preferred Stock are entitled to receive as cumulative dividends at the rate per share of 15% per annum of the stated value for five years, payable in cash or common stock, at the Company's discretion, but excluding effect of future conversion price adjustment, if any. | |