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Restructuring Charges - Restructuring Activity (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2023
Mar. 31, 2022
Restructuring Reserve [Roll Forward]            
Accrued expenses (Beginning balance)   $ 0   $ 0 $ 0 $ 0
Restructuring charges $ 0 $ 8,700 $ 0 $ 7,900 8,740 7,909
Cash payments         (8,130) (6,644)
Accrued expenses (Ending balance) $ 610   $ 1,265   $ 610 $ 1,265