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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Net income	$ 61,292	$ 56,693	$ 95,249	$ 95,317
Foreign currency translation	(3,953)	(2,113)	821	2,704
Change in unrealized (losses) / gains on marketable securities, net of tax	(75)	1,025	1,276	1,898
Comprehensive income	$ 57,264	$ 55,605	$ 97,346	$ 99,919

X

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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