Related Party Transactions (Tables)

12 Months Ended

Jan. 31, 2013

Notes To Financial Statements [Abstract]

Revenue Recognized from Related Party

The following table shows revenue recognized from these customers:

Year ended January 31,	2013			2012			2011
Revenue from customers	$	56,878		$	35,944		$	37,726
Percentage of total revenue	5.2		%	3.5		%	4.1		%