Deferred Revenue and Deferred Cost (Tables)

3 Months Ended

Apr. 30, 2013

Revenue Recognition [Abstract]

Schedule of Deferred Revenue and Related Cost

Deferred revenue and related cost at April 30, 2013 and January 31, 2013 consisted of the following:

	As of April 30, 2013			As of January 31, 2013
	(in thousands)
Deferred revenue on product shipments	$	5,051		$	3,827
Deferred revenue from licenses		300			485
Deferred cost of revenue on product shipments		(1,327	)		(861	)
Total deferred income	$	4,024		$	3,451