Income Taxes - Schedule of Deferred Tax Assets and liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax liabilities:
Property and equipment	$ (3,781)	$ (1,636)
Unbilled rent	(7,045)	(4,495)
Partnership investments	(5,103)	(3,362)
Other	(6,757)	(6,141)
Total deferred tax liabilities	(22,686)	(15,634)
Deferred tax assets:
Operating loss and interest deduction carry forwards	28,289	19,016
Other	10,085	10,314
Total deferred tax assets	38,374	29,330
Valuation allowance	(15,975)	(23,005)
Total net deferred tax assets	22,399	6,325
Net deferred tax (liability)	$ (287)	$ (9,309)