Stock-Based Compensation Stock Activity (Details) - USD ($)
|
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
|
|
| Number of shares - outstanding, December 31, 2014 |
4,671,639
|
|
| Granted, in shares |
110,825
|
|
| Exercised, in shares |
396,010
|
|
| Forfeited, in shares |
14,700
|
|
| Expired, in shares |
5,457
|
|
| Number of shares - outstanding, December 31, 2015 |
4,366,297
|
4,671,639
|
| Number of shares - exercisable, December 31, 2015 |
2,225,613
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] |
|
|
| Weighted average exercise price per share - outstanding, December 31, 2014 |
$ 5.88
|
|
| Weighted average exercise price per share - granted |
20.00
|
|
| Weighted average exercise price per share - exercised |
5.68
|
|
| Weighted average exercise price per share - forfeited |
13.47
|
|
| Weighted average exercise price per share - expired |
6.12
|
|
| Weighted average exercise price per share - outstanding, December 31, 2015 |
6.24
|
$ 5.88
|
| Weighted average exercise price per share - exercisable, December 31, 2015 |
$ 5.72
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |
|
|
| Options, outstanding, weighted average remaining contractual term |
7 years 1 month 2 days
|
|
| Options, exercisable, weighted average remaining contractual term |
6 years 11 months 27 days
|
|
| Aggregate Intrinsic Value, outstanding in dollars per share |
$ 54,700
|
|
| Aggregate Intrinsic Value, exercisable, in dollars per share |
$ 29,000
|
|