Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended
	Jun. 30, 2012	Mar. 31, 2015 acre	Sep. 30, 2008	Jul. 31, 2009
Commitments and Contingencies [Line Items]
Research And Development		368,000
Revenue, Net	10,000,000
Common Stock, Shares to be Issued	325,000
Common Stock Shares Issuable		271,000
December 31, 2018 [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Future Minimum Payments Due		13,000
Maryland [Member] | Letter of Credit [Member]
Commitments and Contingencies [Line Items]
Debt Instrument, Face Amount				50,000
Gaithersburg, Maryland [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Area		12,000
Durham, North Carolina [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Area		16,300
Durham, North Carolina [Member] | December 31, 2018 [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Future Minimum Payments Due		20,000
Nashville, Tennessee facility lease [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Future Minimum Payments Due		4,000
Operating Leases, Area		2,076
Gaithersburg, Maryland (Lease Facility 1) [Member] | September 2019 [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Future Minimum Payments Due		13,000
Gaithersburg, Maryland (Lease Facility 2) [Member] | September 2019 [Member]
Commitments and Contingencies [Line Items]
Operating Leases, Future Minimum Payments Due		4,000
Minimum [Member]
Commitments and Contingencies [Line Items]
Estimated Research Development Cost			500,000
Maximum [Member]
Commitments and Contingencies [Line Items]
Estimated Research Development Cost			$ 700,000