Summary of Significant Accounting Policies (Schedule of Customers that Account for Greater than 10 Percent of Accounts Receivable) (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, net of allowance for doubtful accounts	$ 5,373,023	$ 4,047,059
GlaxoSmithKline, LLC [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, net of allowance for doubtful accounts	200,169	1,079,570
Percent of Total Receivables	3.10%	22.10%
GlaxoSmithKline Biologicals S.A. [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, net of allowance for doubtful accounts	1,490,975	476,526
Percent of Total Receivables	23.40%	9.80%
Medicare [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, net of allowance for doubtful accounts	$ 890,936	$ 506,308
Percent of Total Receivables	14.00%	10.30%