Investment in and Notes Receivable from CareCentrix (Details Textual) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended
	Aug. 24, 2012	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accumulated and unpaid dividends on the preferred shares					$ 8,600,000
Equity method investment, realized gain on disposal					67,100,000
Escrow fund receivable		10,600,000		10,600,000	10,600,000
Promissory note			25,000,000
Investment maturity date	Mar. 19, 2017		Mar. 19, 2017
Increase (decrease) in notes receivable		6,500,000
Fixed interest rate on promissory note			10.00%
Investment income, nonoperating			2,500,000	2,500,000	2,500,000
Reduction in escrow fund receivable				700,000
Seller financing note receivable	9,900,000	3,400,000	3,400,000	3,400,000
Interest rate on promissory note, thereafter	18.00%
Equity in net (loss) earnings of CareCentrix			0	(2,301,000)	68,381,000
Allowance for credit losses		0	0	0
CareCentrix [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cost method investments		$ 900,000	$ 900,000	$ 900,000