Summary of Significant Accounting Policies (Schedule of ResponseDX Accounts Receivable) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Allowance for doubtful accounts	$ (1,048,864)	$ (991,990)
Total	5,269,551	5,373,023
Medicare [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Total	1,449,049	890,936
ResponseDX [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable	4,400,814	3,815,348
Allowance for doubtful accounts	(1,048,864)	(991,990)
Total	3,351,950	2,823,358
ResponseDX [Member] | Medicare [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable	1,449,049	890,936
ResponseDX [Member] | Private Payor [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable	$ 2,951,765	$ 2,924,412