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Organization and Summary of Changes in Significant Accounting Policies - Additional Information (Details)
$ in Thousands
3 Months Ended
Aug. 26, 2021
Apr. 30, 2022
USD ($)
Segment
Apr. 30, 2021
USD ($)
Feb. 01, 2022
USD ($)
Jan. 31, 2022
USD ($)
Jan. 31, 2021
USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]            
Number Of Operating Segments | Segment   1        
Operating Lease, Right-of-Use Asset   $ 2,385   $ 2,685    
Operating lease liability   3,261   974    
Operating lease liabilities - long term   2,506   2,654    
Cash and cash equivalents   31,390 $ 18,973   $ 47,673 $ 31,543
Collectible receivables   14,644        
Accumulated deficit   (450,854)   20 $ (417,686)  
Payments of stock issuance costs   96 $ 0      
Lease liability, current portion   755        
Finance lease, right of use asset   159   182    
Lease liability, current portion   92   $ 187    
Common Stock Purchase Agreement [Member] | Tumim Stone Capital, LLC [Member]            
Organization And Summary Of Significant Accounting Policies [Line Items]            
Purchase commitment of common stock shares   $ 175,000        
IronNet Cybersecurity Inc [Member] | Business Combination Agreement [Member]            
Organization And Summary Of Significant Accounting Policies [Line Items]            
Common stock diluted exchange ratio 0.8141070