Stockholders' Equity (Details Textual) - USD ($)
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1 Months Ended |
3 Months Ended |
12 Months Ended |
Jul. 18, 2018 |
Jun. 19, 2018 |
Jan. 31, 2017 |
Sep. 30, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Stockholders' Equity (Textual) |
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| Authorized to issue and sale, shares |
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80,000,000
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| Common stock, shares authorized |
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75,000,000
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75,000,000
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| Common stock, par value |
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$ 0.001
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$ 0.001
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| Preferred stock, shares authorized |
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5,000,000
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5,000,000
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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 issued under the controlled equity offering program |
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2,186,855
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| Controlled equity offering program for proceeds |
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$ 19,304,081
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| Commissions and professional fees |
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$ 95,778
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| Recognized options and warrants vest over period |
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4 years
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| Total net proceeds of private offering |
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$ 5,026,181
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| Cash proceeds of exercised, stock options |
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$ 494,866
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$ 129,255
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| Warrant [Member] |
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| Stockholders' Equity (Textual) |
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| Warrants issued with promissory notes |
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780,500
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3,618,053
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| Stock option aggregate grant fair value |
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$ 1,253,390
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| Warrants exercised |
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349,315
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1,070,238
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| Warrants issued to purchase common stock |
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780,500
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| Cash proceeds from warrants |
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$ 678,240
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$ 111,994
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| Number of warrants expired |
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4,695,846
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| Number of warrants exercised |
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349,315
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143,650
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| Purchase Warrant [Member] |
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| Stockholders' Equity (Textual) |
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| Warrants exercised |
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926,588
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| Cash proceeds from warrants |
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$ 1,853,176
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| Additional proceeds amount |
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$ 522,326
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| Consultants Two [Member] |
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| Stockholders' Equity (Textual) |
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| Stock options granted |
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85,000
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| Stock option aggregate grant fair value |
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$ 269,416
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| Stock options, description |
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The stock options have an exercise price of $2.02 per share, are exercisable during a ten-year term, are subject to vesting over periods of three and four years and have an aggregate measurement date fair value of $269,416.
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| Exercise price of stock option |
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$ 2.02
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| Recognized options and warrants vest over period |
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10 years
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| Stock units shares sold |
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180,000
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| Share price |
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$ 1.99
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| 2011 Plan [Member] |
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| Stockholders' Equity (Textual) |
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| Remaining options to be issued |
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3,775,852
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| Total number of shares authorized for issuance |
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10,000,000
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| Stock Option [Member] |
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| Stockholders' Equity (Textual) |
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| Stock options granted |
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860,000
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1,316,000
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| Stock options granted to employees |
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726,000
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| Options exercised |
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602,533
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123,333
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| Common stock, per share |
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$ 2.40
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| Stock option aggregate grant fair value |
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$ 2,759,453
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$ 3,337,752
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$ 528,580
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| Stock options, description |
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The remaining shares subject to the stock options will vest over a period of 24 months subject to the continuous service of the applicable optionee.
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The Company granted stock options to employees to purchase 1,031,000 shares of the Company's common stock at an exercise price of $2.40 per share. The options have terms of ten years. Of the 1,031,000 stock options granted, 300,000 are subject to vesting based on continuous service over periods between zero and four years from the date of grant. The balance of the grants, comprising stock options to purchase an aggregate of 731,000 shares, have performance-based vesting conditions and will be valued at the time the milestones are reached. The stock options have an aggregate grant date fair value of $528,580.
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| Vesting percentage |
50.00%
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| Exercise price of stock option |
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$ 2.40
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| Number of options cancelled |
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460,599
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153,750
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| Recognized options and warrants vest over period |
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10 years
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| Number of shares vesting |
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300,000
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| Cash proceeds of exercised, stock options |
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$ 494,866
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$ 129,255
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| Stock Option [Member] | Minimum [Member] |
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| Stockholders' Equity (Textual) |
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| Common stock, per share |
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$ 5.30
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| Exercise price of stock option |
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3.57
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| Stock Option [Member] | Maximum [Member] |
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| Stockholders' Equity (Textual) |
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| Common stock, per share |
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8.86
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| Exercise price of stock option |
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$ 8.86
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| Board of Directors Member] |
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| Stockholders' Equity (Textual) |
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| Stock options granted |
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200,000
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| Stock option aggregate grant fair value |
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$ 719,360
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| Exercise price of stock option |
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$ 4.60
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| Recognized options and warrants vest over period |
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10 years
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| Private Offering [Member] |
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| Stockholders' Equity (Textual) |
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| Warrants issued to purchase common stock |
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3,438,053
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| Exercise price of stock option |
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$ 1.50
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| Total net proceeds of private offering |
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$ 5,026,181
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| Private Offering [Member] | Officers and Directors [Member] |
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| Stockholders' Equity (Textual) |
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| Description of warrants |
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Each unit consists of one share of the Company's common stock and one common stock purchase warrant (see "Warrants"). Each warrant can be exercised at any time prior to June 30, 2020 for the purchase of one share of the Company's common stock at an exercise price of $2.25.
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| Stock units shares sold |
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289,334
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