Stockholders' Equity and Stock-Based Compensation (Details Narrative) - USD ($)
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1 Months Ended |
3 Months Ended |
9 Months Ended |
12 Months Ended |
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Feb. 06, 2017 |
Aug. 02, 2016 |
Aug. 31, 2018 |
May 31, 2018 |
Apr. 30, 2018 |
Mar. 30, 2018 |
Jan. 30, 2018 |
Mar. 31, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
Jul. 30, 2018 |
May 31, 2017 |
Mar. 25, 2015 |
Exercise price |
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$ 0.25
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Common stock, shares authorized |
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100,000,000
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100,000,000
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Common stock, shares, outstanding |
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36,149,325
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32,862,090
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Class of Warrant or Right, Outstanding |
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844,337
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844,337
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Stock options outstanding |
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5,342,192
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5,604,154
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Additional common shares |
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100,753
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Total stock and stock equivalents outstanding |
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46,206,354
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43,114,512
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Proceeds from the issuance of the warrants and common shares |
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$ 4,000,000
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Common stock, conversion basis |
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The Series B Preferred Stock was initially convertible into 2,666,667 shares of common stock.
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Preferred stock par value |
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$ 0.001
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$ 0.001
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Common Stock, Shares Issued |
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36,149,325
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32,862,090
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Number of options vested and expected to vest outstanding |
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3,673,176
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3,935,138
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Unrecognized compensation costs |
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$ 300,000
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Weighted average recognition period |
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4 months 28 days
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Aggregate intrinsic value |
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$ 0
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$ 0
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Series B Preferred Stock conversion description |
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The Company has the option of forcing the conversion of all or part of the Series B Preferred Stock if at any time the average closing price of the Company’sCompany’s common stock for a thirty-trading day period is greater than $5.4902 prior to August 2, 2019 or greater than $8.2353 at any time. The Company can only exercise this option if it also requires the conversion of the Series A Preferred Stock in the same proportion as it is requiring of the Series B Preferred Stock.
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Preferred stock convertible amount |
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$ 6,200,000
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2006 Stock Plan and 2015 Equity Incentive Plan [Member] |
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Stock options outstanding |
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5,342,192
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5,604,154
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Options vested |
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3,673,176
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3,935,138
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PIK dividend [Member] |
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Conversion price |
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$ 2.7451
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$ 1.50
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Fair value per share |
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$ 3.315
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$ 2.34
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Total cumulative deemed dividend |
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$ 200,000
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$ 100,000
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Investment Bank [Member] |
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Monthly payments |
$ 15,000
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Introductory fee in percentage |
7.00%
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Warrants fees in percentage |
5.00%
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Offering price term |
3 years
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2015 Equity Incentive Plan [Member] |
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Common shares issued under incentive plan |
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6,300,000
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New ATM agreement [Member] |
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Proceeds from issuance of shares |
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$ 7,200,000
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Sale of stock, number of shares |
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6,400,000
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Convertible Series A Preferred Stock [Member] |
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Common stock, shares issued, conversion of preferred stock |
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124,882
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Preferred Stock, Shares Outstanding |
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813,624
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813,624
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Additional common shares |
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165,239
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148,403
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Accumulated dividend |
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$ 500,000
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$ 400,000
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Common stock shares reserved for future issuance, Value |
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$ 813,624
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$ 813,624
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Conversion price |
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$ 2.75
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Preferred stock, shares issued |
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813,624
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813,624
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Preferred stock, liquidation preference |
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$ 2,687,077
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$ 2,640,862
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Preferred stock convertible amount |
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$ 600,000
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Accrued dividend |
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$ 453,597
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$ 407,382
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Convertible Series B Preferred Stock [Member] |
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Class of Warrant or Right, Outstanding |
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666,664
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Preferred Stock, Shares Outstanding |
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2,666,667
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2,666,667
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Additional common shares |
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224,970
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175,237
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Rate of dividend payable in kind |
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7.00%
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Common stock shares reserved for future issuance, Value |
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$ 2,666,667
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$ 2,666,667
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Proceeds from the issuance of the warrants and common shares |
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$ 3,700,000
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Price per share |
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$ 1.50
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Conversion price |
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$ 1.50
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Preferred stock, shares issued |
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2,666,667
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2,666,667
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2,666,667
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Preferred stock, liquidation preference |
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$ 4,337,455
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$ 4,262,855
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Liquidation preference per share |
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$ 1.50
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Common stock exercise price |
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1.875
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Preferred stock convertible amount |
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3,600,000
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Accrued dividend |
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$ 337,456
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262,856
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Long-Term Non-Qualified Options [Member] | Advisory board members[Member] |
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Non-qualified stock options granted |
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64,677
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Term of options |
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10 years
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Long-Term Non-Qualified Options [Member] | Chief Executive Officer [Member] | Advisory board members[Member] |
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Non-qualified stock options granted |
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1,409,248
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Long-Term Non-Qualified Options [Member] | Chief Executive Officer [Member] | Minimum [Member] | Advisory board members[Member] |
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Contractual lives |
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3 years
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Long-Term Non-Qualified Options [Member] | Chief Executive Officer [Member] | Maximum [Member] | Advisory board members[Member] |
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Contractual lives |
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10 years
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Long-Term Non-Qualified Options [Member] | Directors, Officers and Employees [Member] | Advisory board members[Member] |
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Non-qualified stock options granted |
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4,801,248
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Long-Term Non-Qualified Options [Member] | Directors, Officers and Employees [Member] | Minimum [Member] | Advisory board members[Member] |
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Exercise price |
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$ 0.9
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Contractual lives |
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1 month 6 days
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Term of options |
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5 years
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Long-Term Non-Qualified Options [Member] | Directors, Officers and Employees [Member] | Maximum [Member] | Advisory board members[Member] |
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Exercise price |
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$ 43.25
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Contractual lives |
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9 years 4 months 24 days
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Term of options |
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10 years
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Long-Term Non-Qualified Options [Member] | Director [Member] |
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Non-qualified stock options granted |
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212,528
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Description of option vesting |
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The remaining approximately 212,528 stock options were service based options issued to the directors of the Company that vest over a one-year period on the anniversary date of the grant. All options granted have a 10-year contractual term
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Long-Term Non-Qualified Options [Member] | Employees and Consultants [Member] |
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Non-qualified stock options granted |
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1,540,263
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Description of option vesting |
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The service condition vests one-third annually over a 3-year period with accelerated vesting of these options occurring upon applicable performance or market conditions being satisfied by certain milestone dates
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Long-Term Non-Qualified Options [Member] | Employees, Consultants and Directors [Member] |
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Non-qualified stock options granted |
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1,752,791
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Strike price |
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$ 0.90
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Description of option vesting |
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The service condition vests one-third annually over a 3-year period with accelerated vesting of these options occurring upon applicable performance or market conditions being satisfied by certain milestone dates
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Description of Long-Term Non-Qualified Option Grants |
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In accordance with ASC 718, awards with service, market and performance conditions for the employees and consultants were assigned a fair value of $0.69 per share and the awards with service conditions for the directors of the Company were assigned a fair value of $0.70 per share (total value of $1.2 million). The value was determined using a Monte Carlo simulation Model
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Description for accelerated vesting of options |
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The Company’s closing stock price is above $3 per share for 10 consecutive trading days by December 31, 2019, The Company secures at least $5 million of funding from the Department of Energy by June 30, 2019
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Description for exercise of options |
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The weighted average years remaining of expected life was itself calculated based on a Monte Carlo simulation under which it was assumed that the options would be exercised, if vested, when the stock reached a price of $4.50, otherwise they would be exercised at expiration, if in the money
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Consultants [Member] | Long-Term Non-Qualified Options [Member] | Advisory board members[Member] |
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Non-qualified stock options granted |
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476,267
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Consultants [Member] | Long-Term Non-Qualified Options [Member] | Advisory board members[Member] | Minimum [Member] |
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Exercise price |
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$ 0.9
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Term of options |
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3 years
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Consultants [Member] | Long-Term Non-Qualified Options [Member] | Advisory board members[Member] | Maximum [Member] |
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Exercise price |
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$ 43.25
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Term of options |
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10 years
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Holders of Series A Preferred Shares [Member] |
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Convertible preferred stock, shares converted |
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|
111,260
|
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|
95,116
|
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|
Common stock, shares issued, conversion of preferred stock |
|
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|
124,882
|
|
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|
110,530
|
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Shares issued against dividend |
|
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|
729
|
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B. Riley FBR, Inc. [Member] | 2018 ATM agreement [Member] |
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Proceeds from issuance of shares |
|
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|
$ 2,000,000
|
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Sale of stock, number of shares |
|
|
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|
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|
3,300,000
|
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Common stock authorized to be issued under prospectus supplement, value |
|
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|
$ 50,000,000
|
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B. Riley FBR, Inc. [Member] | March 28, 2019 and March 29, 2019 [Member] | 2018 ATM agreement [Member] |
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Proceeds from issuance of shares |
|
|
|
|
|
|
|
$ 200,000
|
|
|
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|
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Sale of stock, number of shares |
|
|
|
|
|
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|
300,000
|
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BCF [Member] |
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Accrete dividend |
|
$ 2.7451
|
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|
$ 0.84
|
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Additional deemed dividend |
|
$ 0.5699
|
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Preferred stock convertible amount |
|
$ 2,800,000
|
|
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|
$ 2,600,000
|
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BCF [Member] | PIK dividend [Member] |
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Total cumulative deemed dividend |
|
|
|
|
|
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|
100,000
|
|
$ 100,000
|
|
|
|
General International Holdings, Inc [Member] | Convertible Series A Preferred Stock [Member] |
|
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Common stock, shares, outstanding |
|
255,000
|
|
|
|
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|
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|
Rate of dividend payable in kind |
|
7.00%
|
|
|
|
|
|
|
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Number of shares reserved for future issuance |
|
1,020,000
|
|
|
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|
Common stock shares reserved for future issuance, Value |
|
$ 2,800,000
|
|
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|
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Price per share |
|
$ 2.75
|
|
|
|
|
|
|
|
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Conversion price |
|
2.7451
|
|
|
|
|
|
|
|
|
|
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Fair value per share |
|
3.315
|
|
|
|
|
|
|
|
|
|
|
|
Average market price of common stock |
|
$ 3.315
|
|
|
|
|
|
|
|
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|
Aggregate intrinsic value |
|
$ 2,800,000
|
|
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|
|
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|
Preferred stock, shares issued |
|
1,020,000
|
|
|
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|
|
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|
Preferred stock, liquidation preference per share |
|
$ 2.7451
|
|
|
|
|
|
|
|
|
|
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|
Preferred stock convertible amount |
|
$ 3,400,000
|
|
|
|
|
|
|
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|
ATM Agreement [Member] | B. Riley FBR, Inc. [Member] |
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|
Net proceeds to Company |
|
|
|
|
|
|
|
20,700,000
|
|
|
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|
ATM Agreement [Member] | B. Riley FBR, Inc. [Member] | On January 24, 2018, January 26, 2018, February 7, 2018, and March 2, 2018 [Member] |
|
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|
Aggregate registration amount |
|
|
|
|
|
|
|
22,600,000
|
|
|
|
|
|
Stock Options and Restricted Stock [Member] | Plan [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
Common stock, shares authorized |
|
|
|
|
|
|
|
|
|
|
|
|
600,000
|
Common stock, shares authorized increased |
|
|
|
|
|
|
|
|
|
|
|
2,900,000
|
1,400,000
|
Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
Proceeds from the issuance of the warrants and common shares |
|
|
|
|
|
|
|
300,000
|
|
|
|
|
|
Warrants [Member] | Convertible Series B Preferred Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
Exercise price |
|
|
|
|
|
|
$ 1.50
|
|
|
|
|
|
|
Number of shares reserved for future issuance |
|
|
|
|
|
|
|
|
|
|
133,432
|
|
|
Maturity date |
|
|
|
|
|
|
Jan. 30, 2021
|
|
|
|
|
|
|
Convertible Series B Preferred Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
Accumulated dividend |
|
|
|
|
|
|
|
$ 187,000
|
|
|
|
|
|
Price per share |
|
|
|
|
|
|
|
$ 2.34
|
|
|
|
|
|
Preferred stock, shares issued |
|
|
|
|
|
|
|
2,666,667
|
|
|
|
|
|
Preferred stock, liquidation preference |
|
|
|
|
|
|
|
$ 4,300,000
|
|
|
|
|
|