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Basis of Presentation and Principles of Consolidation (Details)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Oct. 31, 2020
USD ($)
Jul. 31, 2020
USD ($)
Jul. 31, 2020
USD ($)
Oct. 31, 2020
USD ($)
Divisions
Oct. 31, 2019
USD ($)
Jan. 31, 2020
Organization, Consolidation and Presentation of Financial Statements Line Items [Line Items]            
Number of operating units | Divisions       3    
Payments to redeem minority non-controlling Interest   $ 17,853   $ 17,853 $ 0  
Related Party Transaction, Amounts of Transaction $ 0   $ 1,954      
Due to Affiliate, Current $ 0     $ 0    
Dot Technology Corp. [Member]            
Organization, Consolidation and Presentation of Financial Statements Line Items [Line Items]            
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners           36.00%