Discontinued Operations of Adeona Clinical Laboratory and Note Receivable (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Costs and Expenses:
General and administrative	$ 6,013	$ 5,832	$ 5,012
Other Income:
Income from discontinued operations	0	0	216
Adeona Clinical Laboratory [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Laboratory fees, net	0	0	115
Operating Costs and Expenses:
General and administrative	0	0	466
Cost of laboratory services	0	0	110
Total operating costs and expenses	0	0	576
Loss from discontinued operations	0	0	(461)
Other Income:
Gain on sale of Adeona Clinical Laboratory	0	0	677
Income from discontinued operations	$ 0	$ 0	$ 216