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Restructuring Charges - Description (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Restructuring Charges    
Restructuring costs $ 2,408 $ 4,136
Changes to accrued liability balance related to restructuring    
Severance costs   3,974
Non-cash expense   162
Payments   (2,885)
Balance at end of period $ 1,251 $ 1,251