v2.4.0.8
Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Income Tax [Line Items]        
Effective tax rate 38.57% 31.94% 39.11% 32.02%
Deferred tax liability charged on equity $ 200,000   $ 200,000  
Pro forma effective income tax rate       46.90%
Income tax expense (benefit)   $ (93,000)   $ 563,000