Net Loss Per Share - Potential Dilutive Outstanding Securities Excluded From Diluted Net Loss Per Common Share (Detail) - shares |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Antidilutive securities excluded from computation of diluted weighted-average shares outstanding | 5,356,623 | 576,142 | 5,356,623 | 576,142 |
Stock Options [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Antidilutive securities excluded from computation of diluted weighted-average shares outstanding | 1,605,790 | 545,640 | 1,605,790 | 545,640 |
Warrants [Member] | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Antidilutive securities excluded from computation of diluted weighted-average shares outstanding | 3,750,833 | 30,502 | 3,750,833 | 30,502 |