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Business Combinations (Details) - USD ($)
$ in Thousands
Oct. 31, 2021
May 07, 2020
Jan. 31, 2021
Business Acquisition [Line Items]      
Goodwill $ 26,247   $ 24,340
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  
Goodwill, tax deductible amount   $ 0  
Acquired finite-lived intangible assets, weighted average useful life 3 years 6 months 5 years  
Holdback agreements related to employees   $ 20,000  
Keybase | Minimum      
Business Acquisition [Line Items]      
Service period   1 year  
Keybase | Maximum      
Business Acquisition [Line Items]      
Service period   3 years