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Warranty (Tables)
 12 Months Ended
Jan. 31, 2017
Standard Product Warranty Disclosure [Abstract]  
Warranty claim activity
The following is a summary of the Company’s warranty-claim activity during 2017 and 2016.
 
January 31,
(In thousands)
2017
 
2016
Beginning balance
$
1,000

 
$
950

Provision for current year
700

 
675

Provision for (benefits from) prior year
(285
)
 
(250
)
Costs incurred
(415
)
 
(375
)
Ending balance
$
1,000

 
$
1,000