v3.7.0.1
STOCKHOLDERS' EQUITY (Details)
 12 Months Ended 24 Months Ended
Dec. 19, 2016
USD ($)
$ / shares
Sep. 19, 2016
USD ($)
$ / shares
Jun. 20, 2016
USD ($)
$ / shares
Mar. 21, 2016
USD ($)
$ / shares
Dec. 21, 2015
USD ($)
$ / shares
Sep. 21, 2015
USD ($)
$ / shares
Aug. 07, 2015
USD ($)
shares
Jun. 22, 2015
USD ($)
$ / shares
Mar. 23, 2015
USD ($)
$ / shares
Mar. 06, 2015
shares
Jun. 05, 2014
shares
May 12, 2014
shares
Jan. 02, 2014
shares
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
$ / shares
shares
Dec. 31, 2016
USD ($)
item
$ / shares
shares
Dec. 31, 2015
USD ($)
$ / shares
shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Sep. 15, 2014
$ / shares
Dec. 23, 2013
$ / shares
Dividends                                          
Amount per Share of Common Stock | $ / shares $ 0.20 $ 0.20 $ 0.20 $ 0.20 $ 0.20 $ 0.20   $ 0.20 $ 0.20                        
Dividends declared $ 20,666,000 $ 19,760,000 $ 19,762,000 $ 19,762,000 $ 19,654,000 $ 19,622,000   $ 19,635,000 $ 19,637,000                        
Dividends and dividend equivalents                               $ 79,627,000 $ 78,608,000 $ 58,504,000      
Deferred tax asset for dividend equivalents paid                                 268,000 27,000      
Shares surrendered to pay for payroll taxes, value                               472,000 107,000        
Accrued unpaid dividends                               488,000 165,000 225,000      
Additional paid-in capital                               1,627,384,000 1,182,923,000        
Receivable due from related party                               42,000 109,000        
Reclassification from temporary equity                               284,000 62,000        
Amount received by certain members of management for tendering common stock to Holdings                                   92,000      
Historical cost of shares rendered to Holdings by certain members of management                                   43,000      
Decrease in temporary equity                                   43,000      
Treasury Stock                                          
Fair value of treasury shares purchased                                   49,000      
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                               4,855,000 10,480,000 11,293,000      
Increase (decrease) to additional paid-in capital related to stock based compensation                                   43,000      
Total estimated unrecognized compensation cost related to nonvested stock-based compensation arrangements                               9,502,000          
Value of shares issued for stock based compensation                               4,856,000 $ 10,480,000 11,293,000      
Service condition term                                 1 year        
Related Party Transactions                                          
Receivable due from related party                               42,000 $ 109,000        
Wanda capital contribution                               10,000,000          
Treasury Stock                                          
Treasury Stock                                          
Fair value of treasury shares purchased                                   92,000      
Additional Paid-in Capital                                          
Dividends                                          
Deferred tax asset for dividend equivalents paid                                 268,000 27,000      
Shares surrendered to pay for payroll taxes, value                               472,000 107,000        
Reclassification from temporary equity                               284,000 62,000        
Treasury Stock                                          
Fair value of treasury shares purchased                                   (43,000)      
Equity disclosures                                          
Increase (decrease) to additional paid-in capital related to stock based compensation                                 10,480,000        
Value of shares issued for stock based compensation                               4,855,000 10,480,000 $ 11,293,000      
Related Party Transactions                                          
Wanda capital contribution                               $ 10,000,000          
Accounting Standards Update 201609 [Member]                                          
Dividends                                          
Additional paid-in capital                                 $ 1,182,923,000        
Forecast                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                                     $ 4,751,000    
Expected performance target to be achieved (as a percent)                           100.00% 100.00%            
RSU and PSU Units                                          
Dividends                                          
Number of shares surrendered for taxes | shares                                 3,131        
Equity disclosures                                          
Increase (decrease) to additional paid-in capital related to stock based compensation                                 $ (107,000)        
Restricted stock unit granted (in shares) | shares                               618,092 331,573 494,980      
Shares of RSU and PSU                                          
Balance at the beginning of the period (in shares) | shares                             556,510 19,226     556,510    
Granted (in shares) | shares                               618,092 331,573 494,980      
Vested (in shares) | shares                               (19,226) (280,844) (493,971)      
Forfeited (in shares) | shares                               (7,767) (31,503) (1,009)      
Canceled | shares                               (53,815)          
Nonvested at the end of the period (in shares) | shares                               556,510 19,226        
Weighted Average Grant Date Fair Value                                          
Balance at the beginning of the period (in dollars per share) | $ / shares                             $ 24.88 $ 29.59     $ 24.88    
Granted (in dollars per share) | $ / shares                               24.88 $ 33.71 $ 22.40      
Vested (in dollars per share) | $ / shares                               29.59 33.96 22.41      
Forfeited (in dollars per share) | $ / shares                               24.88 33.96 $ 20.18      
Canceled | $ / shares                               (24.88)          
Unvested at the end of the period (in dollars per share) | $ / shares                               24.88 $ 29.59        
RSU and PSU Units | Minimum                                          
Equity disclosures                                          
Price per share (in dollars per share) | $ / shares                               20.18          
RSU and PSU Units | Maximum                                          
Equity disclosures                                          
Price per share (in dollars per share) | $ / shares                               $ 33.96          
Performance Stock Unit                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                                 $ 4,679,000 $ 6,063,000      
Price per share (in dollars per share) | $ / shares                                       $ 24.60  
Shares granted | shares                   168,949 1,655 1,819 244,016                
Increase in authorized capital expenditures to accelerate deployment of certain customer experience enhancing strategic initiatives                                   $ 38,800,000      
Percentage of performance target                   122.80%             100.00% 100.00%      
Service condition term                                   1 year      
Members of Management and Executive Officers | Performance Stock Unit Transition Award                                          
Equity disclosures                                          
Number of shares remaining available for grant | shares                               53,815          
Members of Management and Executive Officers | Performance Stock Unit                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                               $ 2,036,000          
Expected performance target to be achieved (as a percent)                               100.00%          
Value of shares issued for stock based compensation                               $ 7,009,000          
Shares granted | shares                               278,255          
Fair value of stock at grant date (in dollars per share) | $ / shares                               $ 24.88          
Number of shares to be received for each unit | shares                               1          
Period of cumulative free cash flow and net income required to meet the performance target condition                               3 years          
Related Party Transactions                                          
Number of days for settlement                               30 days          
Members of Management and Executive Officers | Performance Stock Unit | Forecast                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                           $ 2,443,000 $ 2,443,000            
Members of Management and Executive Officers | Performance Stock Unit | Minimum                                          
Equity disclosures                                          
Expected performance target to be achieved (as a percent)                               80.00%          
PSUs vesting as a percentage of performance target                               30.00%          
Members of Management and Executive Officers | Performance Stock Unit | Maximum                                          
Equity disclosures                                          
Expected performance target to be achieved (as a percent)                               120.00%          
PSUs vesting as a percentage of performance target                               150.00%          
Executive Officers | Restricted Stock Unit                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                               $ 1,128,000          
Value of shares issued for stock based compensation                               $ 3,383,000          
Price per share (in dollars per share) | $ / shares                               $ 24.88          
Restricted stock unit granted (in shares) | shares                               135,981          
Shares of RSU and PSU                                          
Granted (in shares) | shares                               135,981          
Related Party Transactions                                          
Percentage of options that will vest on each of the anniversaries from the date of grant                               33.00%          
Number of days for settlement                               30 days          
Vesting period (in years)                               3 years          
Chief Executive Officer and President | Restricted Stock Unit                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                               $ 20,000 $ 549,000        
Shares granted | shares             19,226                            
Estimated grant date fair value             $ 569,000                            
Former Employee                                          
Dividends                                          
Temporary equity (in shares) | shares                               27,197 5,939        
Reclassification from temporary equity                               $ 284,000 $ 62,000        
2013 Equity Incentive Plan | Stock Options                                          
Equity disclosures                                          
Number of shares authorized | shares                               9,474,000          
Number of shares remaining available for grant | shares                               7,739,524          
2013 Equity Incentive Plan | Board of Director | Stock Options                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                               $ 491,000 $ 382,000 $ 226,000      
2013 Equity Incentive Plan | Members of Management and Executive Officers | Restricted Stock Unit                                          
Equity disclosures                                          
Number of shares to be received for each unit | shares                               1          
2013 Equity Incentive Plan | Members of Management and Executive Officers | Performance Stock Unit                                          
Equity disclosures                                          
Number of days from the termination of service for settlement of fully vested RSU                                 60 days        
2013 Equity Incentive Plan | Members of Management and Executive Officers | Performance Stock Unit | Minimum                                          
Equity disclosures                                          
PSUs vesting as a percentage of performance target                                 80.00%        
Percentage of performance target                                 30.00%        
2013 Equity Incentive Plan | Members of Management and Executive Officers | Performance Stock Unit | Maximum                                          
Equity disclosures                                          
PSUs vesting as a percentage of performance target                                 120.00%        
Percentage of performance target                                 150.00%        
2013 Equity Incentive Plan | Members of Management | Restricted Stock Unit                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                               $ 1,180,000 $ 2,875,000 $ 2,408,000      
Restricted stock unit granted (in shares) | shares                               145,739 84,649 118,849      
Number of days from the termination of service for settlement of fully vested RSU                               60 days          
Shares of RSU and PSU                                          
Granted (in shares) | shares                               145,739 84,649 118,849      
Related Party Transactions                                          
Percentage of options that will vest on each of the anniversaries from the date of grant                               33.00%          
Vesting period (in years)                               3 years          
2013 Equity Incentive Plan | Members of Management | Restricted Stock Unit | Forecast                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                           $ 1,180,000 $ 1,180,000            
2013 Equity Incentive Plan | Executive Officers | Restricted Stock Unit                                          
Equity disclosures                                          
Stock-based compensation expense included in general and administrative expenses                                 $ 1,995,000 $ 2,596,000      
Shares granted | shares                                 58,749        
Restricted stock unit granted (in shares) | shares                                   128,641      
Shares of RSU and PSU                                          
Granted (in shares) | shares                                   128,641      
2013 Equity Incentive Plan | Executive Officers | Restricted Stock Unit | Performance Stock Unit                                          
Equity disclosures                                          
Number of days from the termination of service for settlement of fully vested RSU                                 60 days        
Class A Common Stock                                          
Common Stock Rights and Privileges                                          
Number of votes per share | item                               1          
Dividends                                          
Dividends and dividend equivalents                               $ 18,198,000 $ 17,260,000 $ 12,937,000      
Treasury Stock                                          
Number of treasury shares purchased | shares                                   4,085      
Fair value of treasury shares purchased                                   $ 92,000      
Class A Common Stock | IPO                                          
Equity disclosures                                          
Price per share (in dollars per share) | $ / shares                                         $ 18.00
Class A Common Stock | 2013 Equity Incentive Plan | Board of Director | Stock Options                                          
Equity disclosures                                          
Shares granted | shares                                   11,035      
Class B Common Stock                                          
Common Stock Rights and Privileges                                          
Number of votes per share | item                               3          
Number of shares to be issued on conversion of each common stock at option of holder | shares                               1          
Number of shares to be issued on automatic conversion of each common stock | shares                               1          
Dividends                                          
Dividends and dividend equivalents                               $ 60,662,000 60,662,000 $ 45,496,000      
Dividend Equivalents                                          
Dividends                                          
Dividends and dividend equivalents                               767,000 686,000 71,000      
Wanda                                          
Dividends                                          
Receivable due from related party                                 10,594,000        
Related Party Transactions                                          
Receivable due from related party                                 10,594,000        
Wanda capital contribution                                 10,000,000        
Reimbursement of expenses                               $ 461,000 $ 738,000 $ 1,423,000