Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Major classifications of property and equipment and estimated useful lives were as follows:



	Estimated	As of December 31,
	useful lives	2012			2011
Office furniture and equipment	3 to 10 years	$	9,552		$	9,627
Leasehold improvements	1 to 6 years	1,413			1,392
Manufacturing and test equipment	2 to 10 years	2,673			2,590
		13,638			13,609
Accumulated depreciation and amortization		(11,930		)	(11,271		)
Property and equipment, net		$	1,708		$	2,338

- 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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