Income Taxes - Components of Company's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
DEFERRED TAX ASSETS:
Accounting reserves and accruals	$ 14,830	$ 20,979
Defined benefit plan	4,148	7,665
Deferred management rights proceeds	44,651	69,317
Federal and State net operating loss carryforwards	44,789	51,615
Tax credits and other carryforwards	640	819
Investment in joint ventures	317	584
Other assets	4,353	6,171
Total deferred tax assets	113,728	157,150
Valuation allowance	(14,616)	(88,653)
Total deferred tax assets, net of valuation allowance	99,112	68,497
DEFERRED TAX LIABILITIES:
Property and equipment, net	47,416	67,168
Goodwill and other intangibles	705	1,201
Other liabilities	874	1,597
Total deferred tax liabilities	48,995	69,966
Net deferred tax assets	$ 50,117
Net deferred tax liabilities		$ (1,469)