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Convertible Senior Notes, Net (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2021
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
offering
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]                    
Proceeds from issuance of senior secured notes     $ 0 $ 500,000,000            
Stockholders' equity attributable to parent $ 2,273,312,000 $ 2,294,608,000 2,273,312,000 2,294,608,000     $ 2,251,018,000 $ 2,294,626,000 $ 2,275,753,000 $ 2,270,529,000
Adjustment due to Adoption of ASU                    
Debt Instrument [Line Items]                    
Stockholders' equity attributable to parent $ (3,400,000)   $ (3,400,000)         (3,416,000)    
Common Stock                    
Debt Instrument [Line Items]                    
Share price (in dollars per share) | $ / shares $ 10.44   $ 10.44              
Stockholders' equity attributable to parent $ 1,406,000 1,399,000 $ 1,406,000 1,399,000     1,405,000 1,399,000 1,398,000 1,393,000
Additional Paid-In-Capital                    
Debt Instrument [Line Items]                    
Stockholders' equity attributable to parent 2,707,872,000 2,712,212,000 2,707,872,000 2,712,212,000     2,703,354,000 2,721,042,000 2,707,855,000 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 (436,034,000) (419,071,000) (436,034,000) (419,071,000)     $ (453,809,000) (427,883,000) $ (433,568,000) $ (438,724,000)
Accumulated Deficit | Adjustment due to Adoption of ASU                    
Debt Instrument [Line Items]                    
Stockholders' equity attributable to parent               11,992,000    
Convertible Debt                    
Debt Instrument [Line Items]                    
Debt instrument, face amount 575,000,000   575,000,000         575,000,000    
Interest expense 7,200,000 14,400,000 7,200,000 14,400,000            
Non-cash interest expense 800,000 $ 1,600,000 1,500,000 $ 3,100,000            
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     $ 345,000,000   $ 345,000,000    
Stated interest rate 4.75%   4.75%     4.75%   4.75%    
Proceeds from issuance of senior secured notes           $ 337,500,000        
Convertible senior notes, net $ 344,900,000   $ 344,900,000              
Unamortized discount 100,000   100,000              
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     $ 230,000,000    
Stated interest rate 5.38%   5.38%   5.375%     5.38%    
Proceeds from issuance of senior secured notes         $ 223,700,000          
Convertible senior notes, net $ 229,000,000   $ 229,000,000              
Unamortized discount $ 1,000,000   $ 1,000,000              
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