Subsequent Events (Details) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 12 Months Ended 0 Months Ended
Oct. 10, 2014
Dec. 31, 2014
Feb. 27, 2015
Subsequent Event [Line Items]      
Stock price   27.40  
Fair value of each grant on grant date $ 8.24    
Restricted Stock Units (RSUs)      
Subsequent Event [Line Items]      
Awards granted 6,727    
Vesting increments   33.33%  
Vesting period   3 years  
Restricted Stock Units (RSUs) | Subsequent Event      
Subsequent Event [Line Items]      
Awards granted     67,929
Stock price     $ 32.04
Vesting increments     33.33%
Non-Qualified Stock Options (NQO)      
Subsequent Event [Line Items]      
Vesting increments   33.33%  
Expiration from the date of grant   10 years  
Vesting period   3 years  
Non-Qualified Stock Options (NQO) | Subsequent Event      
Subsequent Event [Line Items]      
Awards granted     53,834
Vesting increments     33.33%
Expiration from the date of grant     10 years
Fair value of each grant on grant date     $ 12.65
Total Shareholder Return Awards (TSR) | Subsequent Event      
Subsequent Event [Line Items]      
Target value of awards granted     $ 1.7
Vesting period     3 years
Number of performance periods     4
Minimum | Total Shareholder Return Awards (TSR) | Subsequent Event      
Subsequent Event [Line Items]      
Percentage of shareholder return award target     0.00%
Maximum | Total Shareholder Return Awards (TSR) | Subsequent Event      
Subsequent Event [Line Items]      
Percentage of shareholder return award target     200.00%