Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, plant and equipment

Property, plant and equipment consisted of the following at December 31, 2014 and 2013: 

	2014			2013
Laboratory equipment	$	—		$	2,473,428
Leasehold improvements	3,170,598			3,166,622
Computer equipment	669,782			655,364
Furniture and fixtures	488,807			488,168
	4,329,187			6,783,582
Less - accumulated depreciation	(3,497,251		)	(5,401,509		)
Property, plant and equipment, net	$	831,936		$	1,382,073