|
Stock-Based Compensation (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
| 2012 Stock Incentive Plan [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Number Of Shares Stock Incentive Plan Newly Authorized |
13,416,019 |
| Employee Stock Option [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
558,000 |
| Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Aggregate Grant Date Fair Value |
$ 2.3 |
| Employee Stock Option [Member] | Board of Directors Chairman [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Grant Date Fair Value Of Stock Options |
0.4 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
103,000 |
| Service Based RSU [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
596,000 |
| First Anniversary Vesting Percentage |
25.00% |
| Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Aggregate Grant Date Fair Value |
5.6 |
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
4 years |
| Service Based RSU [Member] | Board of Directors Chairman [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Grant Date Fair Value Of Restricted Stock Units |
0.6 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
62,000 |
| Quarterly Vesting Percentage |
25.00% |
| Performance Based RSU [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Grant Date Fair Value Of Restricted Stock Units |
1.5 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
161,000 |
| Share-Based Compensation Arrangement By Share-Based Payment Award, Restricted Stock Vesting Range Minimum |
0.00% |
| Share-Based Compensation Arrangement By Share-Based Payment Award, Restricted Stock Vesting Range Maximum |
150.00% |
| Percentage Of Restricted Stock Units Awards Vested After Two Years |
50.00% |
| Percentage Of Restricted Stock Units Awards Vested After Third Year |
50.00% |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |
304,000 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value |
$ 2.4 |