Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) (Unaudited) - USD ($) |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2018 |
|
| Statement Of Stockholders Equity [Abstract] | ||
| Payments of stock issuance cost | $ 3,093,489 | $ 3,093,489 |