v3.19.3.a.u2
Goodwill - Additional Information (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
reporting_unit
Dec. 31, 2018
USD ($)
Goodwill [Line Items]    
Number of reporting units | reporting_unit 1  
Goodwill impairment $ 0 $ 0
6 River Systems, Inc.    
Goodwill [Line Items]    
Goodwill acquired $ 264,527,000 $ 0