Background and Basis of Presentation (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended						0 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Revolving Credit Facility [Member]	Sep. 30, 2013 Harden Healthcare Holdings Inc. [Member]	Oct. 18, 2013 Subsequent Event [Member] Revolving Credit Facility [Member]	Oct. 18, 2013 Subsequent Event [Member] Term Loan B [Member]	Oct. 18, 2013 Subsequent Event [Member] Term Loan C [Member]	Oct. 18, 2013 Subsequent Event [Member] Harden Healthcare Holdings Inc. [Member]
Segment Reporting Information [Line Items]
Business Combination, Consideration Transferred	$ 6.1						$ 408.8
Payments to Acquire Businesses, Gross							355.0
Stock Issued During Period, Value, Acquisitions							53.8
Debt instrument, face amount					670	155
Line of Credit Facility, Maximum Borrowing Capacity		110		100
Business Acquisition, Transaction Costs			$ 1.5
Number of Businesses Acquired	3
Outstanding member units	50.00%