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Warranties (Tables)
9 Months Ended
Oct. 31, 2020
Product Warranties Disclosures [Abstract]  
Warranties Changes in the warranty accrual were as follows:
Three Months EndedNine Months Ended
October 31,
2020
October 31,
2019
October 31,
2020
October 31,
2019
Beginning balance$1,609 $1,739 $2,019 $890 
Change in provision
299 1,184 1,299 3,038 
Settlements made
(389)(939)(1,799)(1,944)
Ending balance$1,519 $1,984 $1,519 $1,984