Subsequent Events (Detail Textuals) - Class A common stock - USD ($) $ / shares in Units, $ in Millions |
1 Months Ended | |||
|---|---|---|---|---|
Feb. 28, 2017 |
Jan. 25, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Subsequent Event [Line Items] | ||||
| Common stock, par value (in dollars per shares) | $ 0.0001 | $ 0.0001 | ||
| Subsequent events | ||||
| Subsequent Event [Line Items] | ||||
| Common stock, par value (in dollars per shares) | $ 0.0001 | |||
| Reverse stock split, description | Shares of Class A common stock were combined into one share of Class A common stock. The accompanying financial statements have been adjusted to reflect the reverse stock split. | |||
| Subsequent events | Warrant | ||||
| Subsequent Event [Line Items] | ||||
| Net offering cost | $ 16.1 | |||