Components of Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Net operating losses, at TRSs	$ 13,899	$ 14,432
Capital losses	8,498	18,604
Other	595	1,056
Total deferred tax assets	22,992	34,092
Valuation allowance	(22,683)	(27,431)
Net deferred tax assets	309	6,661
Identified intangibles	(276)	(3,838)
Advances		(517)
Other	(156)	(217)
Deferred tax (liabilities)	(432)	(4,572)
Net deferred tax liabilities	$ (123)
Net deferred tax assets		$ 2,089