Summary of Significant Accounting Policies (Schedule of ResponseDX Accounts Receivable) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, allowance for doubtful accounts	$ 1,159,756	$ 991,990
Total	7,176,071	5,373,023
ResponseDX [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable, allowance for doubtful accounts	(1,159,756)	(991,990)
Total	4,616,517	2,823,358
Accounts receivable	5,776,273	3,815,348
ResponseDX [Member] | Medicare [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable	2,185,721	890,936
Private Payor [Member] | ResponseDX [Member]
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Accounts receivable	$ 3,590,552	$ 2,924,412