Warranties (Tables)

6 Months Ended

Jul. 31, 2015

Product Warranties Disclosures [Abstract]

Warranties

Changes in the warranty accrual were as follows:

	Three Months Ended						Six Months Ended
	July 31, 2015			July 31, 2014			July 31, 2015			July 31, 2014
Beginning balance	$	2,285		$	2,654		$	3,120		$	2,525
Accrual for warranties	389			648			748			1,389
Settlements made	(922		)	(685		)	(2,116		)	(1,297		)
Ending balance	$	1,752		$	2,617		$	1,752		$	2,617