Stock Option Plans - Stock Option Activity (Details) - $ / shares
|
1 Months Ended |
12 Months Ended |
Mar. 31, 2016 |
Feb. 28, 2014 |
Dec. 31, 2016 |
| Shares Available for Grant |
|
|
|
| Beginning balance |
|
|
2,559,499
|
| Ending balance |
|
|
2,475,600
|
| Number of Options |
|
|
|
| Beginning balance |
|
|
784,136
|
| Ending balance |
|
|
2,350,582
|
| 2016 Plan |
|
|
|
| Stock Option Plans |
|
|
|
| Vesting period |
4 years
|
|
|
| Maximum exercise term |
10 years
|
|
|
| Exercise price of common stock of its fair value (as a percent) |
100.00%
|
|
|
| Shares Available for Grant |
|
|
|
| Beginning balance |
|
|
2,559,499
|
| Shares authorized for plan |
|
|
1,496,001
|
| Granted |
|
|
(1,813,400)
|
| Forfeited |
|
|
233,500
|
| Ending balance |
|
|
2,475,600
|
| Number of Options |
|
|
|
| Beginning balance |
|
|
784,136
|
| Granted |
|
|
1,813,400
|
| Exercised |
|
|
(13,454)
|
| Forfeited |
|
|
(233,500)
|
| Ending balance |
|
|
2,350,582
|
| Weighted Average Exercise Price |
|
|
|
| Beginning balance (in dollars per share) |
|
|
$ 4.09
|
| Granted (in dollars per share) |
|
|
15.09
|
| Exercised (in dollars per share) |
|
|
0.28
|
| Forfeited (in dollars per share) |
|
|
11.35
|
| Ending balance (in dollars per share) |
|
|
$ 11.88
|
| 2014 Plan |
|
|
|
| Stock Option Plans |
|
|
|
| Vesting period |
|
4 years
|
|
| Maximum exercise term |
|
10 years
|
|
| Exercise price of common stock of its fair value (as a percent) |
|
100.00%
|
|
| Maximum number of options that may be re-issued under the 2016 plan |
1,136,229
|
|
|