v2.4.0.8
STOCKHOLDER'S EQUITY (Details) (USD $)
3 Months Ended 3 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Mar. 31, 2014
Restricted stock unit
Performance Vesting
Jan. 02, 2014
Board of Director
item
Dec. 31, 2014
Members of management
Restricted stock unit
Performance Vesting
Recognized during 2014
Jan. 02, 2014
2013 Equity Incentive Plan
Stock options
Mar. 31, 2014
2013 Equity Incentive Plan
Stock options
Jan. 02, 2014
2013 Equity Incentive Plan
Board of Director
Stock options
Mar. 31, 2014
2013 Equity Incentive Plan
Board of Director
Stock options
Jan. 02, 2014
2013 Equity Incentive Plan
Members of management and executive officers
Restricted stock unit
Performance Vesting
Mar. 31, 2014
2013 Equity Incentive Plan
Members of management and executive officers
Restricted stock unit
Performance Vesting
Jan. 02, 2014
2013 Equity Incentive Plan
Members of management and executive officers
Restricted stock unit
Performance Vesting
Minimum
Jan. 02, 2014
2013 Equity Incentive Plan
Members of management and executive officers
Restricted stock unit
Performance Vesting
Maximum
Jan. 02, 2014
2013 Equity Incentive Plan
Members of management and executive officers
Restricted stock unit
Performance Vesting
30%
Minimum
Jan. 02, 2014
2013 Equity Incentive Plan
Members of management and executive officers
Restricted stock unit
Performance Vesting
150%
Maximum
Jan. 02, 2014
2013 Equity Incentive Plan
Members of management
Restricted stock unit
Mar. 31, 2014
2013 Equity Incentive Plan
Members of management
Restricted stock unit
Dec. 31, 2014
2013 Equity Incentive Plan
Members of management
Restricted stock unit
Performance Vesting
Recognized during 2014
Jan. 02, 2014
2013 Equity Incentive Plan
Executive officers
Restricted stock unit
Mar. 31, 2014
2013 Equity Incentive Plan
Executive officers
Restricted stock unit
Jan. 02, 2014
Class A common stock
2013 Equity Incentive Plan
Jan. 02, 2014
Class A common stock
2013 Equity Incentive Plan
Board of Director
Stock options
STOCKHOLDER'S EQUITY                                              
Shares owned by holding entity 1   1                                        
Stock-based compensation expense included in general and administrative $ 6,357,000 $ 0               $ 202,000   $ 1,231,000           $ 2,328,000 $ 4,924,000   $ 2,596,000    
Increase to additional paid-in capital related to stock based compensation 6,357,000                                            
Total estimated unrecognized compensation cost related to nonvested stock-based compensation arrangements 3,693,000                                            
Number of shares authorized               9,474,000                              
Number of shares remaining available for grant               8,615,792                              
Fair value of stock at grant date (in dollars per share)             $ 20.18                                
Number of Board of Directors to whom common stock was granted         2                                    
Shares granted                 10,004                           5,002
Number of shares that will be received under each RSU                                           1  
Number of days form the termination of service for settlement of fully vested RSU                     60 days           60 days            
Grant date fair value (in dollars)                                       $ 2,596,000      
Service condition term                     1 year                        
PSUs vesting as a percentage of performance target                         80.00% 120.00%                  
Percentage of performance target                     100.00%       30.00% 150.00%              
Awards to be granted on achieving specified percentage of performance target (in shares)                     244,016                        
Number of PSUs vesting, if Holdings does not achieve free cash flow minimum performance target                     0                        
Expected performance target to be achieved (as a percent) 100.00%         100.00%                                  
Shares of RSU and PSU                                              
Granted (in shares)       488,032                         115,375     128,641      
Vested (in shares)       (115,375)                                      
Unvested at the end of the period (in shares)       372,657                                      
Weighted Average Grant Date Fair Value                                              
Granted (in dollars per share)       $ 20.18                                      
Vested (in dollars per share)       $ 20.18                                      
Unvested at the end of the period (in dollars per share)       $ 20.18                               $ 20.18