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Long-term Debt - 2021 Notes (Details)
$ / shares in Units, shares in Millions
 1 Months Ended 12 Months Ended
Dec. 01, 2021
USD ($)
Aug. 31, 2020
USD ($)
shares
$ / shares
Dec. 31, 2016
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 30, 2019
Debt Instrument [Line Items]              
Amortization of deferred financing costs       $ 18,045,000 $ 14,780,000 $ 9,370,000  
Repayments of senior debt       429,000 16,606,000 0  
Senior Notes              
Debt Instrument [Line Items]              
Payments of debt issuance costs   $ 2,500,000          
Net loss on extinguishment of debt, including fees paid to lenders   4,800,000          
Senior Notes | 2021 Notes              
Debt Instrument [Line Items]              
Face amount     $ 125,000,000 0 26,737,000    
Interest rate     2.00%       2.00%
Proceeds from issuance of debt     $ 120,400,000        
Debt issuance costs     $ 4,600,000        
Interest expense       500,000 1,700,000 2,500,000  
Amortization of deferred financing costs       200,000 600,000 $ 900,000  
Debt conversion, converted instrument, amount $ 26,700,000            
Debt conversion, original debt, amount 26,300,000 84,200,000          
Payments of debt issuance costs 400,000            
Net loss on extinguishment of debt, including fees paid to lenders (2,200,000)            
Face amount of debt repaid   14,000,000          
Repayments of senior debt   13,900,000          
Debt conversion, original debt, fair value $ 28,500,000            
Senior Notes | 2021 Notes | Class A Common Stock | Common Stock              
Debt Instrument [Line Items]              
Initial conversion rate per $ 1000 principal amount     0.0416082        
Senior Notes | 2024 Notes              
Debt Instrument [Line Items]              
Face amount   $ 117,100,000   117,051,000 117,051,000    
Interest rate   3.50%          
Debt issuance costs   $ 3,000,000          
Repurchase covenant, repurchase price due to fundamental change as percentage of principal amount   100.00%          
Interest expense       $ 4,100,000 $ 1,500,000    
Conversion price (in dollars per share) | $ / shares   $ 18.23          
Initial conversion amount (in shares) | shares   6.4          
Debt conversion, converted instrument, amount   $ 84,200,000          
Senior Notes | 2024 Notes | Common Stock              
Debt Instrument [Line Items]              
Proceeds from issuance of debt   38,100,000          
Debt issuance costs   $ 1,300,000          
Senior Notes | 2024 Notes | Class A Common Stock | Common Stock              
Debt Instrument [Line Items]              
Initial conversion rate per $ 1000 principal amount   0.0548667