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Warranty Accrual (Tables)
9 Months Ended
Oct. 31, 2021
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability The following is a summary of the Company’s warranty-claim activity for the three and nine months ended October 31, 2021 and 2020:
 Three Months EndedNine Months Ended
10/31/202110/31/202010/31/202110/31/2020
(in thousands)
Beginning balance$700 $750 $700 $800 
Provision28 (46)84 (3)
Costs incurred(28)(4)(84)(97)
Ending balance$700 $700 $700 $700