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Warranties
 6 Months Ended
Jul. 31, 2020
Product Warranties Disclosures [Abstract]  
Warranties WARRANTIES
Accruals necessary for product warranties are estimated based on historical warranty costs and average time elapsed between purchases and returns for each division. Additional accruals are made for any significant, discrete warranty issues. Changes in the warranty accrual were as follows:
Three Months EndedSix Months Ended
July 31,
2020		July 31,
2019		July 31,
2020		July 31,
2019
Beginning balance$1,606 $1,391 $2,019 $890 
Change in provision
497 1,032 1,000 1,854 
Settlements made
(494)(684)(1,410)(1,005)
Ending balance$1,609 $1,739 $1,609 $1,739