Stock-Based Compensation (Details Textual) (USD $) | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended |
In Millions, except Share data, unless otherwise specified | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Mar. 31, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Jun. 19, 2012 | Sep. 30, 2014 | Jun. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 |
| compensation_plan | The Plans [Member] | The Plans [Member] | The Plans [Member] | The Plans [Member] | Employee Group [Member] | Employee Group [Member] | Director Group [Member] | Director Group [Member] | Employee Inducement [Member] | Employee Inducement [Member] | Employee Inducement [Member] | Performance Shares [Member] | Performance Shares [Member] | Performance Shares [Member] | Performance Shares [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Restricted Stock and Restricted Stock Units [Member] | Stock Options [Member] | Stock Options [Member] | Stock Options [Member] | Stock Options [Member] | Stock Options [Member] | Year One [Member] | Year One [Member] | Year Two [Member] | Year Two [Member] | Year Three [Member] | Year Three [Member] |
| | | | | | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2006 Management Incentive Plan [Member] | 2006 Management Incentive Plan [Member] | 2006 Management Incentive Plan [Member] | 2006 Management Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | Employee Group [Member] | Employee Group [Member] | Employee Group [Member] | Director Group [Member] | Director Group [Member] | Director Group [Member] | Employee Inducement [Member] | Employee Inducement [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | Employee Group [Member] | Director Group [Member] | Employee Group [Member] | Employee Group [Member] | Employee Group [Member] | Employee Group [Member] | Employee Group [Member] | Employee Group [Member] |
| | | | | | | | | | employee | employee | | officer | executive_officer | | | | | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | 2008 Equity Incentive Plan [Member] | | Minimum [Member] | Maximum [Member] | | | 2008 Equity Incentive Plan [Member] | Employee Inducement [Member] | 2008 Equity Incentive Plan [Member] | Employee Inducement [Member] | 2008 Equity Incentive Plan [Member] | Employee Inducement [Member] |
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Stock-Based Compensation (Textual) [Abstract] | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Number of shares granted | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | ' | ' | 120,000 | 449,875 | ' | 51,276 | 75,490 | 70,000 | [1] | 20,000 | [2] | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Number of stock-based compensation plans | 3 | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Stock options expiration period | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | '6 years | '7 years | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Stock options vesting period | ' | ' | ' | ' | ' | '3 years | [3] | '3 years | ' | ' | ' | | '3 years | [4] | '3 years | [5] | '3 years | ' | ' | ' | ' | '3 years | '3 years | '3 years | '1 year | ' | ' | '3 years | [1] | '3 years | [2] | ' | ' | ' | '3 years | '1 year | ' | | ' | | ' | | ' | | ' | | ' | |
Stock options award vesting right | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | 'vest in equal annual increments over the vesting period | ' | ' | ' | ' | ' | ' | ' | | ' | | 'vest in equal annual increments over the vesting period | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Number of stock options granted (shares) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | 1 | [5] | 2 | [4] | ' | | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 2 | [1] | 1 | [2] | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | ' | ' | ' | ' | ' | $6.99 | [3] | $5.58 | $6.45 | $5.67 | ' | | $6.64 | [4] | $7.14 | [5] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | $6.36 | [3] | $6.04 | [4] | $6.99 | [3] | $6.64 | [4] | $7.63 | [3] | $7.24 | [4] |
Number of officers | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | 7 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Total of performance units were outstanding and fully vested (shares) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | 154,264 | 16,530 | ' | 16,530 | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Grant date fair value awards | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | $1.20 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Percentage of performance units (percent) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | 60.00% | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Percentage of fair market value (percent) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | 40.00% | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Performance units settled in period (shares) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | 121,210 | 52,334 | 27,546 | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Common stock issued during period (shares) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | 69,438 | 31,399 | 16,526 | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Cash payments for shares settled during period | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | 0.3 | 0.1 | 0.1 | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Number of executive officers that settled performance units in period (executive officers) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | 3 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Number of former executive officers that settled performance units in period (executive officers) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | 3 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Performance units forfeited in period (shares) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | 16,524 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Number of former executive officers that forfeited performance units in period (executive officer) | ' | ' | ' | ' | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | 1 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Selling, general and administrative expenses | ' | 1.4 | 1.3 | 3.4 | 3.8 | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Unrecognized stock-based compensation expense related to stock options | ' | $6.70 | ' | $6.70 | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
Weighted-average period for recognizing stock compensation expense | ' | ' | ' | '2 years 0 months 84 days | ' | ' | | ' | ' | ' | ' | | ' | | ' | | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | | ' | | ' | ' | ' | ' | ' | ' | | ' | | ' | | ' | | ' | | ' | |
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[1] | The Company granted nonvested stock awards (restricted stock) outside its existing stock-based compensation plans in the third quarter of 2014 to two executive officers in connection with the employees joining the Company. |
[2] | The Company granted nonvested performance-based stock awards (restricted stock) outside its existing stock-based compensation plans in the first quarter of 2013 to one employee in connection with the employee joining the Company. |
[3] | The weighted average exercise price for these options is calculated based on an exercise price of $6.36 for the options that vest on June 27, 2015, $6.99 for the options that vest on June 27, 2016 and $7.63 for the options that vest on June 27, 2017. |
[4] | The Company granted non-qualified stock options outside its existing stock-based compensation plans in the third quarter of 2014 to two executive officers in connection with the employees joining the Company. The weighted average exercise price for these options is calculated based on an exercise price of $6.04 for the options that vest on September 11, 2015, $6.64 for the options that vest on |
[5] | The Company granted non-qualified performance-based stock options outside its existing stock-based compensation plans in the first quarter of 2013 to one employee in connection with the employee joining the Company. |