Quarterly report pursuant to sections 13 or 15(d)

Income Taxes - Additional Information (Detail)

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Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Income Tax Disclosure [Abstract]    
Income tax (expense) income $ (349) $ (39)
Effective income tax rate 37.40% 43.40%