Note 6. Property and Equipment, Net

The components of property and equipment follow:


	Estimated Useful Lives		December 31,
	Estimated Useful Lives		2011			2010
Purchased computer software		1 – 3 years	$	8,107		$	14,749
Computers and equipment		3 – 7 years		7,808			12,032
Furniture		3 – 7 years		696			2,159
Leasehold improvements		Lease term*		679			1,691
Construction-in-progress (software and equipment)				—			37
Gross property and equipment				17,290			30,668
Accumulated depreciation and amortization				(15,935	)		(29,429	)
Property and equipment, net			$	1,355		$	1,239

Estimated useful life of improvement if shorter.

Depreciation expense was $0.6 million in 2011, $0.6 million in 2010 and $1.1 million in 2009.

- Definition

The entire disclosure for 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. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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