Property and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property and equipment [Line Items]
Property and equipment, gross	$ 6,387,976	$ 3,351,465
Less accumulated depreciation	(2,301,870)	(2,279,840)
Property and equipment, net	4,086,106	1,071,625
Depreciation expense	637,246	465,367	446,502
Leasehold improvements
Property and equipment [Line Items]
Property and equipment, gross	2,319,928	1,022,230
Lab and clean room equipment
Property and equipment [Line Items]
Property and equipment, gross	2,025,263	1,887,645
Furniture and equipment
Property and equipment [Line Items]
Property and equipment, gross	1,240,466	431,563
Construction in Progress
Property and equipment [Line Items]
Property and equipment, gross	802,319	10,027
Capital Leases
Property and equipment [Line Items]
Property and equipment, net	440,000
Leasehold improvements paid for by landlord
Property and equipment [Line Items]
Property and equipment, net	$ 1,000,000