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Income Taxes - Narrative (Details) - USD ($)
12 Months Ended
Dec. 22, 2017
Dec. 21, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]          
Statutory federal income tax rate 21.00% 35.00% 35.00% 35.00% 35.00%
Deferred tax assets, alternative minimum tax     $ 2,652,250 $ 2,029,190  
Valuation allowance, increase amount     53,000,000    
Federal net operating loss carryforwards     174,300,000    
Unrecognized tax benefits     $ 0   $ 0