Segment Reporting

6 Months Ended

Jul. 31, 2011

Segment Reporting

(19) Segment Reporting—Our Chief Operating Decision Makers (CODMs), which consist of the Chief Executive Officer and the President, review our consolidated results within one operating segment. In making operating decisions, our CODMs primarily consider consolidated financial information accompanied by disaggregated revenue information by geographic region.

We eliminate all intercompany revenues in computing revenues by geographic regions. Revenues related to operations in the geographic regions were:

	Three months ended July 31,				Six months ended July 31,
	2011		2010		2011		2010
Revenues:
North America	$	100,071	$	73,121	$	190,394	$	138,286
Europe		46,642		48,888		98,839		91,465
Japan		25,766		20,161		67,400		51,829
Pacific Rim		41,261		45,764		87,142		86,931
Total revenues	$	213,740	$	187,934	$	443,775	$	368,511

For the three months ended July 31, 2011, no single customer accounted for 10% or more of total revenues. For the six months ended July 31, 2011, one customer accounted for 14% of total revenues. For the three months ended July 31, 2010, one customer accounted for 10% of our total revenues. For the six months ended July 31, 2010, no single customer accounted for 10% or more of our total revenues.

We segregate revenue into five categories of similar products and services. Each category includes both product and related support revenues. Revenue information is as follows:

	Three months ended July 31,				Six months ended July 31,
	2011		2010		2011		2010
Revenues:
IC Design to Silicon	$	53,633	$	71,192	$	139,921	$	142,724
Integrated System Design		57,300		49,922		108,845		94,513
Scalable Verification		62,060		39,629		120,802		76,366
New & Emerging Products		23,616		11,797		41,584		25,125
Services & Other		17,131		15,394		32,623		29,783
Total revenues	$	213,740	$	187,934	$	443,775	$	368,511

Certain reclassifications have been made between categories in the fiscal 2011 presentation to be consistent with the fiscal 2012 presentation.