Revenue Recognition (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue, Major Customer [Line Items]
Provision for uncollectibles					$ (69,715)	$ (16,382)
Net revenue			503,233	263,035	1,042,873	780,714
Ambulatory Services [Member]
Revenue, Major Customer [Line Items]
Percentage of revenues from governmental healthcare programs					25.00%	25.00%
Net revenue			277,302	263,035	816,942	780,714
Physician Services [Member]
Revenue, Major Customer [Line Items]
Net fee for service revenue	253,953	[1]
Contract and other revenue	25,171	[1]
Provision for uncollectibles	(53,193)	[1]	(53,193)	0	(53,193)	0
Net revenue	225,931	[1]	225,931	0	225,931	0
Medicare [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Net fee for service revenue	29,163	[1]
Medicaid [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Net fee for service revenue	13,217	[1]
Commercial and Managed Care [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Net fee for service revenue	166,340	[1]
Self-Pay [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 45,233	[1]
Sales Revenue, Net [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	100.00%	[1]
Health Care Organization, Patient Service Revenue [Member] | Sales Revenue, Net [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	112.40%	[1]
Health Care Organization, Patient Service Revenue [Member] | Sales Revenue, Net [Member] | Medicare [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	12.90%	[1]
Health Care Organization, Patient Service Revenue [Member] | Sales Revenue, Net [Member] | Medicaid [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	5.90%	[1]
Health Care Organization, Patient Service Revenue [Member] | Sales Revenue, Net [Member] | Commercial and Managed Care [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	73.60%	[1]
Health Care Organization, Patient Service Revenue [Member] | Sales Revenue, Net [Member] | Self-Pay [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	20.00%	[1]
Contract and Other Revenue [Member] | Sales Revenue, Net [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	11.10%	[1]
Provision for Uncollectibles [Member] | Sales Revenue, Net [Member] | Physician Services [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue, over	(23.50%)	[1]

[1] Net revenue by payor is from the period July 16, 2014, the date of the acquisition, through September 30, 2014. As such, historical amounts are not included.