Intangible Assets

9 Months Ended

Sep. 30, 2011

Intangible Assets [Abstract]

INTANGIBLE ASSETS

7. INTANGIBLE ASSETS

Components of intangible assets were as follows (in thousands):

	As of September 30, 2011						As of December 31, 2010
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Developed and core technology	$	8,718	$	8,718	$	—	$	8,718	$	8,718	$	—
Patents and trade name		2,886		2,822		64		2,886		2,631		255
Customer relationships		1,455		1,455		—		1,455		1,455		—
Total intangible assets	$	13,059	$	12,995	$	64	$	13,059	$	12,804	$	255

Acquired technology, patents and other intangible assets continue to be amortized over their estimated useful lives of 3 to 7 years using the straight-line method. Total intangible amortization expense for the three and nine months ended September 30, 2011 was $64,000 and $191,000, respectively.

The estimated future amortization expense of intangible assets as of September 30, 2011 was as follows (in thousands):

Year Ending December 31,
2011 (remaining three months)	$	64
Thereafter		—
	$	64