Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2012

The components of property and equipment, net

The useful lives of the property and equipment are as follows:



Computer equipment	36 months
Office equipment, furniture and fixtures	36 – 44 months
Software	36 months
Leasehold improvements	Shorter of useful life or lease term

The components of property and equipment, net as of December 31, 2012 and 2011 (in thousands) are as follows:



	December 31,
	2012			2011
Computer equipment and purchased software	$	9,100		$	9,955
Software developed for internal use	10,602			8,947
Furniture and fixtures	2,683			3,131
Leasehold improvements	2,185			2,112
	24,570			24,145
Less: Accumulated depreciation and amortization	(16,717		)	(16,862		)
	$	7,853		$	7,283

The components of other accrued liabilities

The components of other accrued liabilities as of December 31, 2012 and 2011 (in thousands) are as follows:



	December 31,
	2012		2011
Accrued employee compensation	$	3,135	3,021
Accrued market research honoraria	1,783		1,476
Accrued royalties payable	425		1,273
Other accrued expenses	4,178		3,830
	$	9,521	$	9,600

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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