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Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Expense Benefit [Line Items]
Net deferred tax asset	$ 0us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 0us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 0us-gaap_DeferredTaxAssetsLiabilitiesNet
Puerto Rico [Member]
Income Tax Expense Benefit [Line Items]
Deferred tax assets	53,394us-gaap_DeferredTaxAssetsGross / us-gaap_StatementGeographicalAxis = country_PR	50,061us-gaap_DeferredTaxAssetsGross / us-gaap_StatementGeographicalAxis = country_PR	34,041us-gaap_DeferredTaxAssetsGross / us-gaap_StatementGeographicalAxis = country_PR
Deferred tax liabilities	(35,437)us-gaap_DeferredIncomeTaxLiabilities / us-gaap_StatementGeographicalAxis = country_PR	(36,298)us-gaap_DeferredIncomeTaxLiabilities / us-gaap_StatementGeographicalAxis = country_PR	(26,992)us-gaap_DeferredIncomeTaxLiabilities / us-gaap_StatementGeographicalAxis = country_PR
Valuation allowance	(17,957)us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_StatementGeographicalAxis = country_PR	(13,763)us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_StatementGeographicalAxis = country_PR	(7,049)us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_StatementGeographicalAxis = country_PR
TRS [Member]
Income Tax Expense Benefit [Line Items]
Deferred tax assets	67,085us-gaap_DeferredTaxAssetsGross / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	73,182us-gaap_DeferredTaxAssetsGross / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	75,450us-gaap_DeferredTaxAssetsGross / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Deferred tax liabilities	(539)us-gaap_DeferredIncomeTaxLiabilities / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	(492)us-gaap_DeferredIncomeTaxLiabilities / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	(1,035)us-gaap_DeferredIncomeTaxLiabilities / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Valuation allowance	$ (66,546)us-gaap_DeferredTaxAssetsValuationAllowance / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	$ (72,690)us-gaap_DeferredTaxAssetsValuationAllowance / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	$ (74,415)us-gaap_DeferredTaxAssetsValuationAllowance / dei_LegalEntityAxis = us-gaap_SubsidiariesMember

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Amount of deferred tax liability attributable to taxable temporary differences.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Liability

-URI http://asc.fasb.org/extlink&oid=6510232



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph b(2)

-Article 7

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Asset

-URI http://asc.fasb.org/extlink&oid=6510090

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

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