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Business Combinations - Schedule of Purchase Price Allocation (Details) - USD ($)
$ in Thousands
Jan. 31, 2020
May 07, 2019
Jan. 31, 2019
Jan. 31, 2018
Business Acquisition [Line Items]        
Goodwill (excluding deferred tax liability impact) $ 55,830   $ 41,878 $ 1,700
Realm        
Business Acquisition [Line Items]        
Financial and tangible assets, net   $ 43    
Deferred revenue   (350)    
Goodwill (excluding deferred tax liability impact)   10,070    
Total purchase price   38,763    
Developed Technology | Realm        
Business Acquisition [Line Items]        
Identifiable intangible assets   27,300    
Customer relationships | Realm        
Business Acquisition [Line Items]        
Identifiable intangible assets   $ 1,700