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Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Valuation allowance $ 0   $ 0
Interest and penalties 87 123  
Accrued interest 0   0
Accrued penalties $ 0   $ 0