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Income Taxes - Reconciliation of Statutory Federal Income Tax Provision (Benefit) (Detail) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]        
Statutory federal income tax expense (benefit) $ 956,375 $ (403,976) $ (95,147) $ (1,381,738)
Effect of non-taxable REIT (income) loss (58,612) 1,213,807 1,151,797 2,201,535
State income tax expense (benefit) 214,055 148,315 318,223 242,924
Income tax (expense) benefit $ 1,111,818 $ 958,146 $ 1,374,873 $ 1,062,721