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Reconciliation of Statutory Tax Rate to Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Federal statutory rate	34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State statutory rate, net of Federal tax effect	7.20%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	7.20%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Differences in taxable (loss) income from GAAP income	(14.50%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductions	(1.90%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductions
Change in valuation allowance	(0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	(16.40%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Dividends paid deduction	(25.90%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsDividends	(17.00%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsDividends
Effective Tax Rate	0.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations	5.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

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-Name Accounting Standards Codification

-Topic 235

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-Section S99

-Paragraph 1

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-Name Regulation S-X (SX)

-Number 210

-Section 08

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-Subparagraph 2

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deductions. Including, but not limited to, extraterritorial income exclusion deduction, qualified production activity deduction, dividend deduction, deduction for dividend paid to employee stock ownership plan, Medicare prescription drug benefit subsidy deduction, and other deductions.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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