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Acquisitions - Acquisition of a Business (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 21, 2019
Jun. 30, 2020
Sep. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Business Acquisition [Line Items]          
Holdback consideration     $ 1,789   $ 1,650
Contingent earnout     0   2,595
Goodwill acquired $ 42,100   0    
Increase (decrease) in goodwill     699    
Redeemable noncontrolling interest $ 11,400 $ 10,716 10,711 $ 10,974 11,210
OpenEye          
Business Acquisition [Line Items]          
Ownership by noncontrolling owners 15.00%        
OpenEye          
Business Acquisition [Line Items]          
Percentage of business acquired 85.00%        
Consideration $ 61,200        
Holdback consideration 2,820        
Purchase price adjustment 200        
Additional earn-out 11,000        
Increase in deferred tax liability   700      
Increase (decrease) in goodwill   $ 700      
Fair Value, Measurements, Recurring          
Business Acquisition [Line Items]          
Contingent earnout     2   $ 2,595
Fair Value, Measurements, Recurring | OpenEye          
Business Acquisition [Line Items]          
Contingent earnout 2,800   $ 100    
Customer Relationships | OpenEye          
Business Acquisition [Line Items]          
Intangible assets acquired $ 19,805        
Weighted-average estimated useful life of intangible assets acquired 13 years        
Developed Technology | OpenEye          
Business Acquisition [Line Items]          
Intangible assets acquired $ 16,583        
Weighted-average estimated useful life of intangible assets acquired 9 years        
Trade Name | OpenEye          
Business Acquisition [Line Items]          
Intangible assets acquired $ 2,219        
Weighted-average estimated useful life of intangible assets acquired 5 years