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Warranties
 3 Months Ended
Apr. 30, 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 Ended
April 30,
2020		April 30,
2019
Beginning balance$2,019  $890  
Change in provision
390  822  
Settlements made
(803) (321) 
Ending balance$1,606  $1,391