Warranty Accrual (Tables)

6 Months Ended

Jul. 31, 2017

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability

The following is a summary of the Company’s warranty-claim activity for the three and six months ended July 31, 2017 and 2016.

	Three Months Ended						Six Months Ended
	7/31/2017			7/31/2016			7/31/2017			7/31/2016
	(In thousands)
Beginning balance	$	1,000		$	1,000		$	1,000		$	1,000
Provision	112			47			182			176
Costs incurred	(112		)	(47		)	(182		)	(176		)
Ending balance	$	1,000		$	1,000		$	1,000		$	1,000