Warranties (Tables)

6 Months Ended

Jul. 31, 2017

Product Warranties Disclosures [Abstract]

Warranties

Changes in the warranty accrual were as follows:

	Three Months Ended						Six Months Ended
	July 31, 2017			July 31, 2016			July 31, 2017			July 31, 2016
Beginning balance	$	2,405		$	2,316		$	1,547		$	1,835
Accrual for warranties	401			262			1,778			1,086
Settlements made	(541		)	(502		)	(1,060		)	(845		)
Ending balance	$	2,265		$	2,076		$	2,265		$	2,076