Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

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Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Income Tax Disclosure [Line Items]    
Liability for unrecognized tax benefit, including related estimates of penalties and interest $ 0 $ 0
Income tax provision (benefit) $ 24,000 $ (372,000)
Projected annual effective tax rate (0.54%)  
Statutory tax rate 34.00%