v3.23.3
Supplemental financial statement information - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2023
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Jan. 31, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Depreciation expense   $ 1,800 $ 2,900 $ 6,400 $ 9,400  
Remaining performance obligation   5,800   5,800   $ 8,300
Revenue recognition   1,100   4,000    
Accrued inventory   $ 5,700   5,700    
Loss on extinguishment of debt       $ 1,157 $ 0  
Prepayment of debt $ 50,000          
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-11-01            
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Remaining performance obligation, percentage (as a percent)   67.00%   67.00%    
Revenue, remaining performance obligation, expected timing of satisfaction, period   12 months   12 months    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-11-01            
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Revenue, remaining performance obligation, expected timing of satisfaction, period