Stock Option Plan - Vested or Expected to Vest (Details) - USD ($) |
11 Months Ended | 12 Months Ended | |
|---|---|---|---|
Dec. 31, 2014 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Options outstanding and exercisable | |||
| Vested, Number of Shares (in shares) | 397,486 | ||
| Vested, Weighted Average Exercise Price (in dollars per share) | $ 8.02 | ||
| Vested, Weighted Average Remaining Contractual Life | 8 years 10 months 2 days | ||
| Vested, Aggregate Intrinsic Value | $ 2,660,000 | ||
| Expected to vest, Number of Shares (in shares) | 1,953,096 | ||
| Expected to vest, Weighted Average Exercise Price (in dollars per share) | $ 12.66 | ||
| Expected to vest, Weighted Average Remaining Contractual Life | 9 years 3 months 7 days | ||
| Expected to vest, Aggregate Intrinsic Value | $ 4,869,000 | ||
| Fair value of common stock (in dollars per share) | $ 14.30 | ||
| Aggregate intrinsic value of stock options exercised | $ 0 | $ 216,000 | $ 714,000 |
| Fair value of options vested | $ 100 | $ 3,195,000 | $ 75,000 |