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Warranties (Tables)
3 Months Ended
Apr. 30, 2021
Product Warranties Disclosures [Abstract]  
Warranties Changes in the warranty accrual were as follows:
Three Months Ended
April 30,
2021
April 30,
2020
Beginning balance$2,068 $2,019 
Change in provision
704 390 
Settlements made
(117)(803)
Ending balance$2,655 $1,606