Warranties (Tables)

6 Months Ended

Jul. 31, 2014

Product Warranties Disclosures [Abstract]

Warranties

Changes in the warranty accrual were as follows:

	Three Months Ended						Six Months Ended
	July 31, 2014			July 31, 2013			July 31, 2014			July 31, 2013
Beginning balance	$	2,654		$	1,990		$	2,525		$	1,888
Accrual for warranties	648			868			1,389			1,732
Settlements made (in cash or in kind)	(685		)	(811		)	(1,297		)	(1,573		)
Ending balance	$	2,617		$	2,047		$	2,617		$	2,047