Components of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 72,922	$ 73,092
Accumulated Amortization	(6,824)	(5,883)
Net Intangible Asset	66,098	67,209
Lease and management agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	59,758	59,758
Accumulated Amortization	(2,075)	(1,577)
Net Intangible Asset	57,683	58,181
Underlying contract value
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,239	6,239
Accumulated Amortization	(1,092)	(1,014)
Net Intangible Asset	5,147	5,225
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,486	5,656
Accumulated Amortization	(3,452)	(3,112)
Net Intangible Asset	2,034	2,544
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,439	1,439
Accumulated Amortization	(205)	(180)
Net Intangible Asset	$ 1,234	$ 1,259