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Business Combinations (Details) - USD ($)
$ in Thousands
Apr. 30, 2021
May 07, 2020
Jan. 31, 2021
Business Acquisition [Line Items]      
Goodwill $ 24,340   $ 24,340
Minimum      
Business Acquisition [Line Items]      
Holdback agreements, service period   1 year  
Maximum      
Business Acquisition [Line Items]      
Holdback agreements, service period   3 years  
Keybase      
Business Acquisition [Line Items]      
Business acquisition, percentage of voting interests acquired   100.00%  
Payments to acquire businesses, gross   $ 42,900  
Goodwill   24,300  
Intangible assets, other than goodwill   3,300  
Business combination, current assets, other   15,300  
Business combination, cash and equivalents   $ 16,400  
Acquired finite-lived intangible assets, weighted average useful life 4 years 5 years  
Holdback agreements related to employees   $ 20,000