Stock-Based Compensation - Option Activity (Details) - Stock option awards
$ / shares in Units, $ in Thousands |
12 Months Ended |
|
Dec. 31, 2019
USD ($)
$ / shares
shares
|
|---|
| Options |
|
| Outstanding, beginning of period (in shares) | shares |
4,559,334
|
| Granted (in shares) | shares |
346,500
|
| Exercised (in shares) | shares |
0
|
| Forfeited (in shares) | shares |
(103,670)
|
| Expired (in shares) | shares |
(37,997)
|
| Outstanding, end of period (in shares) | shares |
4,764,167
|
| Exercisable (in shares) | shares |
3,530,630
|
| Weighted Average Exercise Price |
|
| Outstanding, beginning of period (In dollars per share) | $ / shares |
$ 16.55
|
| Exercised (in dollars per share) | $ / shares |
0
|
| Granted (in dollars per share) | $ / shares |
9.24
|
| Forfeited (in dollars per share) | $ / shares |
17.76
|
| Expired (in dollars per share) | $ / shares |
17.80
|
| Outstanding, end of period (In dollars per share) | $ / shares |
15.99
|
| Exercisable (in dollars per share) | $ / shares |
$ 16.00
|
| Outstanding, weighted average remaining term (in years) |
7 years 3 months 18 days
|
| Exercisable, weighted average remaining term (in years) |
7 years
|
| Outstanding, aggregate intrinsic value | $ |
$ 11
|
| Exercisable, aggregate intrinsic value | $ |
$ 0
|