Quarterly Selected Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 11 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Quarterly Selected Financial Data (unaudited) | |||||||||||
| Operating Expenses | $ 11,249 | $ 10,476 | $ 8,825 | $ 6,426 | $ 6,104 | $ 3,120 | $ 2,332 | $ 2,214 | $ 161 | $ 36,976 | $ 13,770 |
| Net loss | $ (11,086) | $ (10,297) | $ (8,645) | $ (6,347) | $ (6,039) | $ (3,151) | $ (20,232) | $ (1,913) | $ (161) | $ (36,375) | $ (31,335) |
| Net loss per share, basic and diluted (in dollars per share) | $ (0.55) | $ (0.51) | $ (0.43) | $ (5.39) | $ (13.31) | $ (7.97) | $ (58.42) | $ (6.44) | $ (0.95) | $ (2.36) | $ (83.86) |