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Convertible Senior Notes, Net (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2019
USD ($)
Dec. 31, 2022
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2017
USD ($)
offering
Sep. 30, 2022
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]                
Proceeds from issuance of senior secured notes   $ 0 $ 500,000,000 $ 0        
Stockholders' equity attributable to parent   2,354,504,000 2,294,626,000 2,270,529,000     $ 2,629,975,000  
Adjustment due to Adoption of ASU                
Debt Instrument [Line Items]                
Stockholders' equity attributable to parent   $ (3,400,000) (3,416,000) (30,900,000)     (30,867,000)  
Common Stock                
Debt Instrument [Line Items]                
Share price (in dollars per share) | $ / shares   $ 10.76            
Stockholders' equity attributable to parent   $ 1,406,000 1,399,000 1,393,000     1,535,000  
Additional Paid-In-Capital                
Debt Instrument [Line Items]                
Stockholders' equity attributable to parent   2,716,907,000 2,721,042,000 2,707,792,000     2,825,317,000  
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   (363,877,000) (427,883,000) (438,724,000)     (196,945,000)  
Accumulated Deficit | Adjustment due to Adoption of ASU                
Debt Instrument [Line Items]                
Stockholders' equity attributable to parent     11,992,000       $ (30,867,000)  
Convertible Debt                
Debt Instrument [Line Items]                
Debt instrument, face amount   230,000,000 575,000,000          
Interest expense   22,900,000 28,800,000 28,800,000        
Non-cash interest expense   2,500,000 6,300,000 $ 6,000,000        
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 $ 230,000,000         $ 230,000,000
Stated interest rate   5.38% 5.38%         5.375%
Proceeds from issuance of senior secured notes $ 223,700,000              
Convertible senior notes, net   $ 229,400,000            
Unamortized discount   $ 600,000            
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