Operating Segment Information (Tables)

9 Months Ended

Sep. 30, 2011

Operating Segment Information [Abstract]

Schedule Of Revenues From External Customers By Product, Warranty And Support, And Services

	For the Three Months Ended September 30,
	2011		2010
Product revenues	$	72,550	$	67,709
Warranty and support revenues		22,487		23,020
Professional and other services revenues		11,142		17,576
Total revenues	$	106,179	$	108,305

	For the Nine Months  Ended September 30,
	2011		2010
Product revenues	$	207,202	$	219,137
Warranty and support revenues		67,907		63,713
Professional and other services revenues		35,629		50,953
Total revenues	$	310,738	$	333,803

Schedule Of Revenues From External Customers By Geographic Regions

	Revenues from External Customers
	By Geographic Region
	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
United States	$	47,463	$	44,638	$	121,827	$	125,261
International		58,716		63,667		188,911		208,542
Total revenues from external customers	$	106,179	$	108,305	$	310,738	$	333,803

Schedule Of Long-Lived Assets By Geographic Region

	Long-Lived Assets
	By Geographic Region
	September 30,		December 31,
	2011		2010
United States	$	29,987	$	30,836
Other		7,254		7,840
Total long-lived assets	$	37,241	$	38,676