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Business Reorganization - Change in Liability for Business Reorganization (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
Restructuring Reserve [Roll Forward]  
Employee severance and other termination benefits $ 18,493
Employee Severance and other termination benefits  
Restructuring Reserve [Roll Forward]  
Restructuring reserve 0
Employee severance and other termination benefits 17,614
Payments (2,495)
Restructuring reserve $ 15,119