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Warranties
 9 Months Ended
Oct. 31, 2019
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 EndedNine Months Ended
October 31,
2019		October 31,
2018		October 31,
2019		October 31,
2018
Beginning balance$1,739  $1,137  $890  $1,163  
Change in provision
1,184  521  3,038  1,007  
Settlements made
(939) (807) (1,944) (1,319) 
Ending balance$1,984  $851  $1,984  $851