Accrued Professional Liabilities - Rollforward of Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Self Insurance Reserve [Roll Forward]
Beginning balance	$ 53,785	$ 1,171
Assumed liabilities through acquisitions	13,317	53,512
Provision related to current period reserves	15,943	5,423
Payments for current period reserves	(4,475)	(1,595)
Benefit related to changes in prior period reserves	(425)	(661)
Payments for prior period reserves	(8,863)	(6,055)
Other, net	(2,368)	1,990
Ending balance	$ 66,914	$ 53,785