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Income Taxes - Summary of Provisions for Income Tax Benefit (Expense) (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Federal - Current $ (1,817,112) $ 58,443 $ 394,305
State - Current (354,061) 335,361 326,844
Total - Current (2,171,173) 393,804 721,149
Federal - Deferred 264,121 (269,712) 2,597,799
State - Deferred 15,372 (95,370) 413,705
Total - Deferred $ 279,493 $ (365,082) $ 3,011,504