Warranties (Tables)

6 Months Ended

Jul. 31, 2016

Product Warranties Disclosures [Abstract]

Warranties

Changes in the warranty accrual were as follows:

	Three Months Ended						Six Months Ended
	July 31, 2016			July 31, 2015			July 31, 2016			July 31, 2015
Beginning balance	$	2,316		$	2,285		$	1,835		$	3,120
Accrual for warranties	262			389			1,086			748
Settlements made	(502		)	(922		)	(845		)	(2,116		)
Ending balance	$	2,076		$	1,752		$	2,076		$	1,752