Income Taxes - Difference Between Total Income Taxes Expense and Amount Computed at Statutory Federal Income Tax Rate (Detail) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Book income (loss) before income taxes of the TRS	$ 974	$ 2,384	$ (520)
Statutory rate of 34% applied to pre-tax income	331	810	(178)
Effect of state and local income taxes, net of federal tax benefit	38	97	(14)
Provision to return adjustment	(406)	211	40
Permanent adjustments	16	140	0
Change in valuation allowance	(299)	(998)	257
Other	19	0	0
Total tax expense (benefit)	$ (301)	$ 260	$ 105
Effective tax rate	(30.90%)	10.91%	(20.19%)