Acquisitions and Disposals - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Line Items]
Payments to Acquire Businesses, Gross	$ 20,259
Trade Name Acquired	3,311
Certificate of Need/Licenses Acquired	3,372
Finite-lived Intangible Assets Acquired	258
Other Assets and (Liabilities), Net; Acquired (Assumed)	(538)
Fair Value of Assets Acquired	6,403
Acquired noncontrolling interest	970
Goodwill, Acquired During Period, Including Noncontrolling Interest of $710	14,826
Goodwill related to noncontrolling interests	$ 710