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Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 06, 2020
Jan. 31, 2019
Mar. 31, 2020
Dec. 31, 2019
Business Acquisition [Line Items]        
Total consideration transferred     $ 9,800 $ 102,700
Additional goodwill recognized     $ 3,065  
Goodwill acquired during period net of assets acquired       $ 48,700
Ed Broking [Member]        
Business Acquisition [Line Items]        
Business acquisition date   Jan. 31, 2019    
Algomi Limited [Member]        
Business Acquisition [Line Items]        
Business acquisition date Mar. 06, 2020