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Income Taxes Provision (Benefit) for Income Taxes (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]      
Current federal tax expense (benefit) $ 623,060 $ (5,093) $ 439,934
Current state and local tax expense (benefit) 1,179 (1,446) 946
Current income tax expense (benefit) 624,239 (6,539) 440,880
Deferred federal income tax expense (benefit) (2,724,371) 21,252 19,006
Deferred state and local income tax expense (Benefit) 6,342 (829) 2,097
Deferred income tax expense (benefit) (2,718,029) 20,423 21,103
Benefit from (provision for) income taxes $ (2,093,790) $ 13,884 $ 461,983