Subsequent Event |
6 Months Ended |
|---|---|
Jun. 30, 2018 | |
| Subsequent Events [Abstract] | |
| Subsequent Events | Subsequent Events On July 25, 2018, the Company issued and sold an aggregate of 4,427,563 shares of its common stock at the subscription price of $0.50 per share, pursuant to a rights offering to its existing stockholders. The Company received aggregate gross proceeds of approximately $2.2 million from the rights offering before deducting offering expenses. |