Equity Compensation (Range) (Details) - Stock options
|
12 Months Ended |
|
Dec. 31, 2015
$ / shares
shares
|
|---|
| Options Outstanding |
|
| Number of Underlying Shares | shares |
4,572,672
|
| Options Exercisable |
|
| Number of Underlying Shares | shares |
3,185,180
|
| 1.96-3.38 |
|
| Equity compensation |
|
| Range of Exercise Price, low end of range (in dollars per share) |
$ 1.96
|
| Range of Exercise Price, high end of range (in dollars per share) |
3.38
|
| Options Outstanding |
|
| Weighted Average Exercise Price (in dollars per share) |
$ 2.5900
|
| Number of Underlying Shares | shares |
222,051
|
| Weighted-Average Remaining Contractual Life |
10 months 24 days
|
| Options Exercisable |
|
| Number of Underlying Shares | shares |
222,051
|
| Weighted-Average Remaining Contractual Life |
10 months 24 days
|
| 3.58-6.14 |
|
| Equity compensation |
|
| Range of Exercise Price, low end of range (in dollars per share) |
$ 3.58
|
| Range of Exercise Price, high end of range (in dollars per share) |
6.14
|
| Options Outstanding |
|
| Weighted Average Exercise Price (in dollars per share) |
$ 5.6600
|
| Number of Underlying Shares | shares |
1,382,873
|
| Weighted-Average Remaining Contractual Life |
4 years 4 months 24 days
|
| Options Exercisable |
|
| Number of Underlying Shares | shares |
1,382,873
|
| Weighted-Average Remaining Contractual Life |
4 years 4 months 24 days
|
| 6.34-9.94 |
|
| Equity compensation |
|
| Range of Exercise Price, low end of range (in dollars per share) |
$ 6.34
|
| Range of Exercise Price, high end of range (in dollars per share) |
9.94
|
| Options Outstanding |
|
| Weighted Average Exercise Price (in dollars per share) |
$ 8.320
|
| Number of Underlying Shares | shares |
1,006,242
|
| Weighted-Average Remaining Contractual Life |
6 years 2 months 12 days
|
| Options Exercisable |
|
| Number of Underlying Shares | shares |
810,505
|
| Weighted-Average Remaining Contractual Life |
5 years 9 months 18 days
|
| 11.28-16.97 |
|
| Equity compensation |
|
| Range of Exercise Price, low end of range (in dollars per share) |
$ 11.28
|
| Range of Exercise Price, high end of range (in dollars per share) |
16.97
|
| Options Outstanding |
|
| Weighted Average Exercise Price (in dollars per share) |
$ 13.7400
|
| Number of Underlying Shares | shares |
1,230,444
|
| Weighted-Average Remaining Contractual Life |
8 years 1 month 6 days
|
| Options Exercisable |
|
| Number of Underlying Shares | shares |
427,094
|
| Weighted-Average Remaining Contractual Life |
7 years 2 months 12 days
|
| 17.66-22.92 |
|
| Equity compensation |
|
| Range of Exercise Price, low end of range (in dollars per share) |
$ 17.66
|
| Range of Exercise Price, high end of range (in dollars per share) |
22.92
|
| Options Outstanding |
|
| Weighted Average Exercise Price (in dollars per share) |
$ 20.9700
|
| Number of Underlying Shares | shares |
731,062
|
| Weighted-Average Remaining Contractual Life |
7 years 10 months 24 days
|
| Options Exercisable |
|
| Number of Underlying Shares | shares |
342,657
|
| Weighted-Average Remaining Contractual Life |
7 years 6 months
|