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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Net operating loss carry forwards	$ 9.8		$ 9.9
Effective tax rate	34.00%	34.00%
Effective dividend tax rate	16.00%	25.00%
Deferred tax assets valuation allowance, foreign tax credits			$ 1.0

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Effect dividend tax rate.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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-Publisher FASB

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

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