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Long-Term Debt - Narrative (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Jun. 26, 2023
USD ($)
$ / shares
shares
Apr. 04, 2023
USD ($)
Apr. 05, 2022
USD ($)
Feb. 16, 2018
USD ($)
$ / shares
Oct. 31, 2023
USD ($)
shares
Sep. 30, 2023
USD ($)
$ / shares
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
day
$ / shares
Sep. 30, 2022
USD ($)
Apr. 03, 2023
$ / shares
Mar. 31, 2023
USD ($)
Feb. 01, 2023
USD ($)
Dec. 31, 2022
USD ($)
$ / shares
Nov. 04, 2022
USD ($)
Schedule of Capitalization, Long-term Debt [Line Items]                              
Interest expense           $ 1,978 $ 3,564   $ 7,532 $ 9,087          
Amortization of debt issuance costs and debt discount                 2,796 4,147          
Proceeds from issuance of long-term debt                 30,000 0          
Payments of debt issuance costs                 4,357 4,803          
Change in fair value of October 2023 Notes conversion feature     $ 5,508         $ 5,508              
Increase in fair value of unseparated embedded conversion feature     5,508                        
ADSs, conversion ratio 0.1161846     92.6956                      
Aggregate amount of conversion $ 1,470                            
Cash settlement of notes                 17,500 0          
Number of ADSs issued upon settlement/ conversion (in shares) | shares 12,347                            
Loss on extinguishment of debt   $ 13,129       $ 0 0   $ 13,129 0          
Ordinary shares, nominal value (in dollars per share) | $ / shares $ 0.01         $ 0.01     $ 0.01   $ 0.01     $ 0.01  
Subsequent Event | American Depositary Shares                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Number of ADSs issued upon settlement/ conversion (in shares) | shares         408                    
Senior Notes                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Interest expense           $ 574 3,564   $ 6,128 9,087          
Coupon interest expense           238 1,646   3,332 4,852          
Amortization of debt issuance costs and debt discount           $ 336 $ 1,918   $ 2,796 $ 4,147          
4.50% Exchangeable Senior Notes Due 2023 | Senior Notes                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Interest rate           4.50%     4.50%            
Long-term debt           $ 0     $ 0       $ 17,500 $ 17,500  
4.50% Exchangeable Senior Notes Due 2023 | Convertible Debt                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Debt instrument, face amount     26,375 $ 125,000                      
Option to purchase aggregate principal amount, term       30 days                      
Option to increase aggregate principal amount       $ 18,750                      
Proceeds from issuance of long-term debt       $ 137,560                      
Debt instrument, exchange amount     117,375                        
Debt instrument, repurchased face amount                             $ 8,875
4.50% Exchangeable Senior Notes Due October 2023                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Interest rate                       4.50%      
4.50% Exchangeable Senior Notes Due October 2023 | Senior Notes                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Interest rate           4.50%     4.50%            
Long-term debt           $ 21,187     $ 21,187     $ 117,375   $ 117,375  
Payments of debt issuance costs     4,804                        
Debt exchanged   $ 96,188                          
4.50% Exchangeable Senior Notes Due October 2023 | Senior Notes | Subsequent Event                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Cash settlement of notes         $ 21,641                    
4.50% Exchangeable Senior Notes Due October 2023 | Senior Notes | Third Party                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Payments of debt issuance costs     $ 5,450                        
4.50% Exchangeable Senior Notes Due October 2023 | Convertible Debt                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
ADS, option price per share (in dollars per share) | $ / shares       $ 10.79                      
ADS premium percentage       20.00%                      
ADS shares purchase (in dollars per share) | $ / shares       $ 8.99                      
Threshold percentage of stock price trigger                 130.00%            
Threshold trading days | day                 20            
Consecutive trading days | day                 30            
April 2027 Notes                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Interest rate   6.00%                          
April 2027 Notes | Senior Notes                              
Schedule of Capitalization, Long-term Debt [Line Items]                              
Long-term debt   $ 106,268                          
Debt exchanged $ 106,268                            
Aggregate amount of conversion   $ 106,268