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Geographic Information - Revenue by Location (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenue $ 63,591 $ 49,786
United States    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenue 47,742 38,272
International    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenue $ 15,849 $ 11,514