Acquisitions and Disposals - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Line Items]
Payments to Acquire Businesses, Gross	$ 11,442
Trade Name Acquired	2,796
Certificate of Need/Licenses Acquired	2,386
Finite-lived Intangible Assets Acquired	141
Other Assets and (Liabilities), Net; Acquired (Assumed)	7
Fair Value of Assets Acquired	5,330
Acquired noncontrolling interest	627
Goodwill, Acquired During Period, Including Noncontrolling Interest of $479	6,739
Goodwill related to noncontrolling interests	$ 479