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Goodwill and Intangible Assets Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2020
Dec. 31, 2019
Goodwill [Line Items]              
Goodwill, Impairment Loss $ 0   $ 0 $ 59,816 $ 0    
Goodwill 586,730     586,730     $ 646,680
Amortization of Intangible Assets $ 3,200   $ 4,200 $ 9,600 $ 13,000    
Strategy and Innovation [Member]              
Goodwill [Line Items]              
Goodwill, Impairment Loss   $ 49,900          
Goodwill   37,500          
Life Sciences [Member]              
Goodwill [Line Items]              
Goodwill, Impairment Loss   $ 9,900          
Measurement Input, Long-term Revenue Growth Rate [Member] | Strategy and Innovation [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input   3.00%          
Measurement Input, Long-term Revenue Growth Rate [Member] | Life Sciences [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input   3.00%          
Measurement Input, Long-term EBITDA margin [Domain] | Strategy and Innovation [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input   24.80%          
Measurement Input, Long-term EBITDA margin [Domain] | Life Sciences [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input   6.70%          
Measurement Input, Discount Rate [Member] | Strategy and Innovation [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input   16.00%          
Measurement Input, Discount Rate [Member] | Life Sciences [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input   10.50%          
Measurement Input, Revenue Multiple [Member] | Minimum | Strategy and Innovation [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input           120.00%  
Measurement Input, Revenue Multiple [Member] | Minimum | Life Sciences [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input           30.00%  
Measurement Input, Revenue Multiple [Member] | Maximum | Strategy and Innovation [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input           170.00%  
Measurement Input, Revenue Multiple [Member] | Maximum | Life Sciences [Member]              
Goodwill [Line Items]              
Fair Value of Reporting Unit, Measurement Input           40.00%