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Warranty (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Warranty claim activity        
Beginning balance $ 600 $ 650 $ 600 $ 600
Provision 54 106 145 256
Costs incurred (54) (56) (145) (156)
Ending balance $ 600 $ 700 $ 600 $ 700
Maximum [Member]        
Warranty [Line Items]        
Product warranty period     10 years