Property and Equipment

9 Months Ended

Sep. 30, 2012

5. Property and Equipment

Property and equipment consist of the following:

	December 31,						September 30,

	2010			2011			2012
							(unaudited)
	(in thousands)
Computer equipment	$	554		$	586		$	604
Software		174			209			209
Lab equipment and furniture		3,480			3,465			3,707
Leasehold improvements		979			1,486			1,778

		5,187			5,746			6,298
Less accumulated depreciation and amortization		(3,938	)		(4,436	)		(4,914	)

	$	1,249		$	1,310		$	1,384

Depreciation expense on property and equipment for the years ended December 31, 2009, 2010 and 2011 and the nine months ended September 30, 2011 and 2012 was approximately $842,000, $959,000, $650,000, $479,000 and $478,000, respectively.

- 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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