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Acquisitions - cmdReporter (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 26, 2021
Sep. 30, 2021
Jun. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
[1]
Business Acquisition [Line Items]          
Increase (decrease) in fair value of contingent consideration       $ 4,837 $ (3,100)
cmdReporter          
Business Acquisition [Line Items]          
Consideration transferred $ 3,400        
Contingent consideration, liability $ 400 $ 0   0  
Measurement period 90 days        
Contingent consideration earned   300   300  
Increase (decrease) in fair value of contingent consideration     $ (100)    
Acquisition-related expenses   $ 0   $ 100  
cmdReporter | Developed technology          
Business Acquisition [Line Items]          
Weighted-average economic life of intangible assets acquired 5 years        
[1] Certain prior period amounts have been revised to correct immaterial errors. See Note 1 for more information.