Income Taxes - Summary of Differences Between Total Income Tax Expense Statutory Federal Income Tax Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Expense Benefit [Line Items]
Other	$ 14,745	$ 9,268	$ 2,755
TRS [Member]
Income Tax Expense Benefit [Line Items]
Statutory rate applied to pre-tax income (loss)	4,115	2,280	(5,757)
Effect of state and local income taxes, net of federal tax benefit	605	335	(847)
Valuation allowance (decrease) increase	(6,144)	(1,725)	16,808
Other	1,424	(890)	(10,204)
Total expense	0	0	0
Effective tax rate	0.00%	0.00%	0.00%
Puerto Rico [Member]
Income Tax Expense Benefit [Line Items]
Statutory rate applied to pre-tax income (loss)	(4,306)	(3,869)	(5,921)
Valuation allowance (decrease) increase	4,194	6,714	7,049
Statutory rate increase	0	(2,189)	0
Other	112	17	(1,128)
Total expense	$ 0	$ 673	$ 0
Effective tax rate	0.00%	(6.79%)	0.00%