Summary of Significant Accounting Policies (Schedule of Revenue Sources that Account for Greater than 10 Percent of Total Revenue) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Revenue	$ 4,092,277	$ 5,403,537	$ 15,030,382	$ 13,220,188
GlaxoSmithKline and GlaxoSmithKline Biologicals [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Revenue	710,335	1,664,515	3,745,894	2,619,519
Percent of Total Revenue	17.00%	31.00%	25.00%	20.00%
Medicare [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Revenue	$ 956,716	$ 1,227,893	$ 3,379,405	$ 3,995,200
Percent of Total Revenue	23.00%	23.00%	23.00%	30.00%