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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 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	18.00%	23.00%
Deferred tax assets valuation allowance, foreign tax credits			$ 1.0

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

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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