CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) |
Total |
Preferred Stock [Member] |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Accumulated Deficit [Member] |
|---|---|---|---|---|---|
| BALANCE at Dec. 31, 2016 | $ 13,539,872 | $ 865,136 | $ 10 | $ 83,461,752 | $ (70,787,026) |
| BALANCE (in shares) at Dec. 31, 2016 | 17 | 1,036,832 | |||
| Exercise of preferred | 0 | $ (865,136) | $ 1 | 865,135 | 0 |
| Exercise of preferred (in shares) | (17) | 113,334 | |||
| Exercise of warrants | 2,934,759 | $ 0 | $ 2 | 2,934,757 | 0 |
| Exercise of warrants (in shares) | 0 | 195,651 | |||
| Stock-based compensation | 165,674 | $ 0 | $ 0 | 165,674 | 0 |
| Net loss | (2,891,324) | 0 | 0 | 0 | (2,891,324) |
| BALANCE at Mar. 31, 2017 | 13,748,981 | $ 0 | $ 13 | 87,427,318 | (73,678,350) |
| BALANCE (in shares) at Mar. 31, 2017 | 0 | 1,345,817 | |||
| BALANCE at Dec. 31, 2016 | 13,539,872 | $ 865,136 | $ 10 | 83,461,752 | (70,787,026) |
| BALANCE (in shares) at Dec. 31, 2016 | 17 | 1,036,832 | |||
| Net loss | (9,483,551) | ||||
| BALANCE at Sep. 30, 2017 | 7,592,664 | $ 0 | $ 13 | 87,863,228 | (80,270,577) |
| BALANCE (in shares) at Sep. 30, 2017 | 0 | 1,347,717 | |||
| BALANCE at Mar. 31, 2017 | 13,748,981 | $ 0 | $ 13 | 87,427,318 | (73,678,350) |
| BALANCE (in shares) at Mar. 31, 2017 | 0 | 1,345,817 | |||
| Exercise of warrants | 6,000 | $ 0 | $ 0 | 6,000 | 0 |
| Exercise of warrants (in shares) | 0 | 400 | |||
| Stock-based compensation | 231,086 | $ 0 | $ 0 | 231,086 | 0 |
| Net loss | (3,121,528) | 0 | 0 | 0 | (3,121,528) |
| BALANCE at Jun. 30, 2017 | 10,864,539 | $ 0 | $ 13 | 87,664,404 | (76,799,878) |
| BALANCE (in shares) at Jun. 30, 2017 | 0 | 1,346,217 | |||
| Exercise of warrants | 22,500 | $ 0 | $ 0 | 22,500 | 0 |
| Exercise of warrants (in shares) | 0 | 1,500 | |||
| Stock-based compensation | 176,324 | $ 0 | $ 0 | 176,324 | 0 |
| Net loss | (3,470,699) | 0 | 0 | 0 | (3,470,699) |
| BALANCE at Sep. 30, 2017 | 7,592,664 | $ 0 | $ 13 | 87,863,228 | (80,270,577) |
| BALANCE (in shares) at Sep. 30, 2017 | 0 | 1,347,717 | |||
| BALANCE at Dec. 31, 2017 | 10,754,463 | $ 995,782 | $ 16 | 94,107,981 | (84,349,316) |
| BALANCE (in shares) at Dec. 31, 2017 | 18 | 1,666,144 | |||
| Exercise of preferred | 0 | $ (358,765) | $ 1 | 358,764 | 0 |
| Exercise of preferred (in shares) | (6.5) | 34,690 | |||
| Stock-based compensation | 173,438 | $ 0 | $ 0 | 173,438 | 0 |
| Vested restricted stock | 0 | $ 0 | $ 0 | 0 | 0 |
| Vested restricted stock (in shares) | 0 | 9,333 | |||
| Net loss | (3,475,823) | $ 0 | $ 0 | 0 | (3,475,823) |
| BALANCE at Mar. 31, 2018 | 7,452,078 | $ 637,017 | $ 17 | 94,640,183 | (87,825,139) |
| BALANCE (in shares) at Mar. 31, 2018 | 11.5 | 1,710,167 | |||
| BALANCE at Dec. 31, 2017 | 10,754,463 | $ 995,782 | $ 16 | 94,107,981 | (84,349,316) |
| BALANCE (in shares) at Dec. 31, 2017 | 18 | 1,666,144 | |||
| Net loss | (9,411,448) | ||||
| BALANCE at Sep. 30, 2018 | 16,880,243 | $ 3,514,039 | $ 43 | 107,126,925 | (93,760,764) |
| BALANCE (in shares) at Sep. 30, 2018 | 658 | 4,269,989 | |||
| BALANCE at Mar. 31, 2018 | 7,452,078 | $ 637,017 | $ 17 | 94,640,183 | (87,825,139) |
| BALANCE (in shares) at Mar. 31, 2018 | 11.5 | 1,710,167 | |||
| Exercise of preferred | 0 | $ (637,017) | $ 1 | 637,016 | 0 |
| Exercise of preferred (in shares) | (11.5) | 61,594 | |||
| Stock-based compensation | 175,579 | $ 0 | $ 0 | 175,579 | 0 |
| Vested restricted stock | 0 | $ 0 | $ 0 | 0 | 0 |
| Vested restricted stock (in shares) | 0 | 3,333 | |||
| Net loss | (2,920,691) | $ 0 | $ 0 | 0 | (2,920,691) |
| BALANCE at Jun. 30, 2018 | 4,706,966 | $ 0 | $ 18 | 95,452,778 | (90,745,830) |
| BALANCE (in shares) at Jun. 30, 2018 | 0 | 1,775,094 | |||
| Exercise of preferred | 0 | $ (2,435,262) | $ 11 | 2,435,251 | 0 |
| Exercise of preferred (in shares) | (456) | 1,140,000 | |||
| Issuance of common stock, warrants and preferred stock, net of issuance costs | 15,025,077 | $ 5,949,301 | $ 14 | 9,075,762 | 0 |
| Issuance of common stock, warrants and preferred stock, net of issuance costs (in shares) | 1,114 | 1,355,000 | |||
| Stock-based compensation | 163,896 | $ 0 | $ 0 | 163,896 | 0 |
| Reverse stock split fractional shares | (762) | $ 0 | $ 0 | (762) | 0 |
| Reverse stock split fractional shares (in shares) | 0 | (105) | |||
| Net loss | (3,014,934) | $ 0 | $ 0 | 0 | (3,014,934) |
| BALANCE at Sep. 30, 2018 | $ 16,880,243 | $ 3,514,039 | $ 43 | $ 107,126,925 | $ (93,760,764) |
| BALANCE (in shares) at Sep. 30, 2018 | 658 | 4,269,989 |