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Product Warranty Liability (Tables)
 12 Months Ended
Jan. 31, 2020
Guarantees and Product Warranties [Abstract]  
Activity in Product Warranty Liability Activity in the product warranty liability, which is included in other accrued expenses in the accompanying consolidated balance sheet, is as follows:
 
 
 
  
January 31
 
 
  
2020
 
 
2019
 
 
2018
 
(In thousands)
  
 
 
 
 
 
 
 
 
Balance, beginning of the year
  
$
832
 
 
$
575
 
 
$
515
 
Provision for Warranty Expense
  
 
1,733
 
 
 
1,680
 
 
 
1,294
 
Cost of Warranty Repairs
  
 
(1,715
) 
 
 
(1,423
) 
 
 
(1,234
) 
 
  
 
 
 
 
 
 
 
 
 
 
 
Balance, end of the year
  
$
850
 
 
$
832
 
 
$
575