Acquisitions and Disposals - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Line Items]
Payments to Acquire Businesses, Gross	$ 10,504
Trade Name Acquired	2,623
Certificate of Need/Licenses Acquired	2,224
Finite-lived Intangible Assets Acquired	141
Other Assets and (Liabilities), Net; Acquired (Assumed)	69
Fair Value of Assets Acquired	5,057
Acquired noncontrolling interest	372
Goodwill, Acquired During Period, Including Noncontrolling Interest of $308	5,819
Goodwill related to noncontrolling interests	$ 308