Commitments and Contingencies (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Commitments and Contingencies Disclosure [Line Items]
Rent expense	$ 160,790	$ 181,334
Systems and Services [Member]
Long-term Purchase Commitment [Line Items]
Commitment term	36 months
Commitment amount	$ 20,000
California State [Member]
Commitments and Contingencies Disclosure [Line Items]
Operating leases, space	20,753
Operating lease expiration date	Jun. 30, 2013
Maryland [Member]
Commitments and Contingencies Disclosure [Line Items]
Operating leases, space	1,460
Operating lease expiration date	Jan. 31, 2013