Warranties (Tables)

3 Months Ended

Apr. 30, 2015

Product Warranties Disclosures [Abstract]

Warranties

Changes in the warranty accrual were as follows:

	Three Months Ended
	April 30, 2015			April 30, 2014
Beginning balance	$	3,120		$	2,525
Accrual for warranties	359			741
Settlements made	(1,194		)	(612		)
Ending balance	$	2,285		$	2,654