Segment Reporting

9 Months Ended

Oct. 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 October 31,				Nine months ended October 31,
	2011		2010		2011		2010
Revenues:
North America	$	116,256	$	116,644	$	306,650	$	254,930
Europe		62,555		60,347		161,394		151,812
Japan		28,793		21,227		96,193		73,056
Pacific Rim		42,904		40,719		130,046		127,650
Total revenues	$	250,508	$	238,937	$	694,283	$	607,448

For the three months ended October 31, 2011, no single customer accounted for 10% or more of total revenues. For the nine months ended October 31, 2011, one customer accounted for 13% of total revenues. For the three months ended October 31, 2010, one customer accounted for 10% of our total revenues. For the nine months ended October 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 October 31,				Nine months ended October 31,
	2011		2010		2011		2010
Revenues:
IC Design to Silicon	$	96,478	$	83,433	$	236,400	$	226,157
Integrated System Design		60,087		57,839		168,933		152,352
Scalable Verification		65,146		67,088		185,948		143,453
New & Emerging Products		11,895		14,877		53,479		40,001
Services & Other		16,902		15,700		49,523		45,485
Total revenues	$	250,508	$	238,937	$	694,283	$	607,448

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