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Income Taxes - Summary of Combined Activity and Taxable Activity (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Puerto Rico [Member]
Income Before Income Taxes [Line Items]
Book income (loss) before income taxes	$ (11,040)	$ (9,919)	$ (19,738)
Current	0	673	0
Deferred	0	0	0
Total expense	0	673	0
TRS [Member]
Income Before Income Taxes [Line Items]
Book income (loss) before income taxes	12,104	6,705	(16,934)
Current	0	0	0
Deferred	0	0	0
Total expense	$ 0	$ 0	$ 0

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.