Property and Equipment

12 Months Ended

Dec. 31, 2013

Property Plant And Equipment [Abstract]

3. Property and Equipment

Property and equipment consists of the following:


	December 31,
	2013			2012
Computer equipment	$	2,379,254		$	2,003,706
Software		1,477,416			1,323,081
Furniture		599,650			599,650
Lab equipment		11,166,619			8,747,790
Office equipment		51,360			51,360
Leasehold improvements		4,893,770			4,881,706

Property and equipment		20,568,069			17,607,293
Less accumulated depreciation		(15,532,837	)		(14,339,497	)

Property and equipment, net	$	5,035,232		$	3,267,796

Depreciation expense for the years ended December 31, 2013, 2012 and 2011 was $1.2 million, $1.0 million and $1.1 million, respectively.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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