XML 59 R44.htm IDEA: XBRL DOCUMENT v3.20.4
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
 3 Months Ended 12 Months Ended
Oct. 01, 2020
USD ($)
unit
Dec. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Jan. 01, 2018
USD ($)
Disaggregation of Revenue [Line Items]                          
Current contract assets   $ 49,194,000       $ 35,103,000       $ 49,194,000 $ 35,103,000    
Non-current contract assets   400,000       4,000,000.0       400,000 4,000,000.0    
Deferred tax liability   1,296,000       3,441,000       1,296,000 3,441,000    
Retained earnings   9,749,000       16,032,000       9,749,000 16,032,000    
Revenue   359,301,000 $ 389,913,000 $ 375,061,000 $ 343,650,000 321,508,000 $ 357,358,000 $ 343,896,000 $ 303,443,000 1,467,925,000 1,326,205,000 $ 1,132,241,000  
Amortization of contract assets                   64,800,000 56,800,000 50,000,000.0  
Revenue reserve   1,800,000       1,200,000       1,800,000 1,200,000    
Deferred revenue recognized                   57,600,000 61,000,000.0    
Current deferred revenue   54,654,000       58,220,000       54,654,000 58,220,000    
Non-current deferred revenue   200,000       200,000       $ 200,000 200,000    
Cash equivalents maturity period at purchase (less than)                   91 days      
Marketable debt securities   49,995,000       0       $ 49,995,000 0    
Number of reporting units | unit 2                        
Market capitalization $ 5,500,000,000                        
Amount by which market capitalization exceeds carrying value 4,300,000,000                        
Goodwill and Intangible Asset Impairment                   0 0 0  
Advertising expense                   487,600,000 484,300,000 334,700,000  
Adjustment of redeemable noncontrolling interests to fair value                   (1,645,000) (8,242,000) (1,244,000)  
Redeemable Noncontrolling Interest                          
Disaggregation of Revenue [Line Items]                          
Adjustment of redeemable noncontrolling interests to fair value                   1,600,000 8,200,000 1,200,000  
Accounting Standards Update 2014-09                          
Disaggregation of Revenue [Line Items]                          
Current contract assets                         $ 29,700,000
Non-current contract assets                         4,200,000
Deferred tax liability                         8,300,000
Retained earnings                         $ 25,600,000
International                          
Disaggregation of Revenue [Line Items]                          
Revenue                   88,689,000 91,450,000 81,600,000  
Cash equivalents   $ 0       $ 0       0 0    
Europe                          
Disaggregation of Revenue [Line Items]                          
Revenue                   72,497,000 76,313,000 70,070,000  
Amount by which market capitalization exceeds carrying value 131,400,000                        
North America                          
Disaggregation of Revenue [Line Items]                          
Revenue                   1,395,428,000 1,249,892,000 1,062,171,000  
Amount by which market capitalization exceeds carrying value $ 4,100,000,000                        
United States                          
Disaggregation of Revenue [Line Items]                          
Revenue                   $ 1,379,236,000 $ 1,234,755,000 $ 1,050,641,000  
United States | Geographic Concentration Risk                          
Disaggregation of Revenue [Line Items]                          
Revenue concentration risk percentage (greater than)                   95.00%      
Effect of adoption of ASU No. 2014-09                          
Disaggregation of Revenue [Line Items]                          
Revenue                   $ 73,800,000      
Discount Rate | Europe                          
Disaggregation of Revenue [Line Items]                          
Measurement input (as a percent)   0.15       0.15       0.15 0.15    
Discount Rate | Minimum                          
Disaggregation of Revenue [Line Items]                          
Measurement input (as a percent)   0.115       0.115       0.115 0.115    
Discount Rate | Maximum                          
Disaggregation of Revenue [Line Items]                          
Measurement input (as a percent)   0.150       0.275       0.150 0.275    
Royalty Rate | Indefinite-lived Intangible Assets | Minimum                          
Disaggregation of Revenue [Line Items]                          
Measurement input (as a percent)   0.020       0.015       0.020 0.015    
Royalty Rate | Indefinite-lived Intangible Assets | Maximum                          
Disaggregation of Revenue [Line Items]                          
Measurement input (as a percent)   0.055       0.055       0.055 0.055