Segment Reporting (Tables)

9 Months Ended

Oct. 31, 2011

Revenues Related to Operations in 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

Revenue Information by Products and Services

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