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Restructuring - Summary of Restructuring Liability (Details) - 2015 Initiatives
$ in Thousands
 9 Months Ended
Sep. 30, 2019
USD ($)
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2018 $ 634
Costs Incurred 50
Payments (353)
Balance at September 30, 2019 331
Cumulative Costs Incurred to Date 6,023
Employee Severance Costs  
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2018 0
Costs Incurred 0
Payments 0
Balance at September 30, 2019 0
Cumulative Costs Incurred to Date 4,131
Facility Exit Related Costs  
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2018 634
Costs Incurred 50
Payments (353)
Balance at September 30, 2019 331
Cumulative Costs Incurred to Date $ 1,892