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Warranties
 6 Months Ended
Jul. 31, 2018
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
 
Six Months Ended
 
July 31,
2018
 
July 31,
2017
 
July 31,
2018
 
July 31,
2017
Beginning balance
$
1,097

 
$
2,405

 
$
1,163

 
$
1,547

Change in provision
329

 
401

 
486

 
1,778

Settlements made
(289
)
 
(541
)
 
(512
)
 
(1,060
)
Ending balance
$
1,137

 
$
2,265

 
$
1,137

 
$
2,265