Related Party Transactions (Tables)

12 Months Ended

Jan. 31, 2012

Revenue Recognized from Related Party

The following table shows revenue recognized from these customers:

Year ended January 31,	2012			2011			2010
Revenue from customers	$	35,944		$	37,726		$	33,104
Percentage of total revenue		3.5	%		4.1	%		4.1	%