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Warranty (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Warranty claim activity    
Beginning accrued warranty balance $ 500 $ 500
Provision 200 265
Benefits from prior years (12) (120)
Costs incurred (188) (145)
Ending accrued warranty balance 500 500
Less current portion (150) (150)
Non-current portion $ 350 $ 350
Maximum    
Warranty [Line Items]    
Product warranty period 10 years