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Debt - Convertible Debt (Details) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Dec. 31, 2019
Sep. 30, 2019
Debt Instrument [Line Items]        
Carrying value $ 312,588,000 $ 234,527,000    
Convertible Senior Notes        
Debt Instrument [Line Items]        
Gross proceeds       $ 316,250,000
Convertible Senior Notes Due 2024 | Convertible Senior Notes        
Debt Instrument [Line Items]        
Gross proceeds 316,250,000 316,250,000   $ 316,250,000
Unamortized debt discount 0 (78,395,000)    
Unamortized issuance costs (3,662,000) (3,328,000) $ (5,500,000)  
Carrying value $ 312,588,000 $ 234,527,000