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Restructuring and Related Activities (Tables)
3 Months Ended
Mar. 31, 2020
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs :
Severance and other benefitsProfessional fees and other related chargesTotal
Balance at February 14, 2020$—  $—  $—  
Additions charged to expense12,956  732  13,688  
Cash payments(853) (74) (927) 
Balance at March 31, 202012,103  658  12,761