Summary of Significant Accounting Policies (Schedule of ResponseDX Accounts Receivable) (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, allowance for doubtful accounts	$ 903,961	$ 991,990
Total	6,449,691	5,373,023
ResponseDX [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, allowance for doubtful accounts	(903,961)	(991,990)
Total	4,088,883	2,823,358
Accounts receivable	4,992,844	3,815,348
ResponseDX [Member] | Medicare [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable	1,930,801	890,936
Private Payor [Member] | ResponseDX [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable	$ 3,062,043	$ 2,924,412