Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation allowance			$ 58,300
Net deferred tax asset	0	0	0
TRS [Member]
Deferred tax assets	75,450	58,297	58,923
Deferred tax liabilities	(1,035)	(690)	(601)
Valuation allowance	(74,415)	(57,607)	(58,322)
Puerto Rico [Member]
Deferred tax assets	34,041	0	0
Deferred tax liabilities	(26,992)	0	0
Valuation allowance	$ (7,049)	$ 0	$ 0