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Convertible Senior Notes, Net - Narrative (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2017
USD ($)
offering
Sep. 30, 2022
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]              
Proceeds from issuance of senior secured notes   $ 0 $ 0 $ 500,000,000      
Gain on extinguishment of debt   495,000 0 0      
Stockholders' equity attributable to parent   2,208,733,000 2,354,504,000 2,294,626,000     $ 2,270,529,000
Adjustment due to Adoption of ASU              
Debt Instrument [Line Items]              
Stockholders' equity attributable to parent     (3,400,000) (3,416,000)      
Common Stock              
Debt Instrument [Line Items]              
Stockholders' equity attributable to parent   1,414,000 1,406,000 1,399,000     1,393,000
Additional Paid-In-Capital              
Debt Instrument [Line Items]              
Stockholders' equity attributable to parent   2,727,488,000 2,716,907,000 2,721,042,000     2,707,792,000
Additional Paid-In-Capital | Adjustment due to Adoption of ASU              
Debt Instrument [Line Items]              
Stockholders' equity attributable to parent       (15,408,000)      
Accumulated Deficit              
Debt Instrument [Line Items]              
Stockholders' equity attributable to parent   (520,237,000) (363,877,000) (427,883,000)     $ (438,724,000)
Accumulated Deficit | Adjustment due to Adoption of ASU              
Debt Instrument [Line Items]              
Stockholders' equity attributable to parent       11,992,000      
2023 Notes              
Debt Instrument [Line Items]              
Debt instrument, repurchase amount   $ 53,900,000          
Debt instrument, redemption price, percentage   99.10%          
Gain on extinguishment of debt   $ 500,000          
Convertible Debt              
Debt Instrument [Line Items]              
Debt instrument, face amount     230,000,000        
Interest expense   8,600,000 22,900,000 28,800,000      
Non-cash interest expense   1,200,000 2,500,000 6,300,000      
Convertible Debt | 2022 Notes              
Debt Instrument [Line Items]              
Number of debt offerings issued | offering         2    
Debt instrument, face amount         $ 345,000,000 $ 345,000,000  
Stated interest rate         4.75%    
Proceeds from issuance of senior secured notes         $ 337,500,000    
Convertible Debt | 2022 Notes | Additional Paid-In-Capital              
Debt Instrument [Line Items]              
Convertible debt, carrying amount of equity component       11,000,000      
Convertible Debt | 2023 Notes              
Debt Instrument [Line Items]              
Debt instrument, face amount $ 230,000,000 $ 176,100,000 $ 230,000,000        
Stated interest rate 5.375%   5.38%        
Proceeds from issuance of senior secured notes $ 223,700,000            
Convertible Debt | 2023 Notes | Additional Paid-In-Capital              
Debt Instrument [Line Items]              
Convertible debt, carrying amount of equity component       4,400,000      
Convertible Debt | 2022 and 2023 Notes | Additional Paid-In-Capital              
Debt Instrument [Line Items]              
Convertible debt, carrying amount of equity component       $ 15,400,000