Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Operating Loss Carryforwards [Line Items]          
Revenues $ (29,516,742) $ (24,507,215) $ (101,462,682) $ (84,340,960)  
Income tax provision $ 81,851 $ (15,345) $ (1,833,800) $ (3,018,861)  
Effective income tax rate 29.80% 40.20% 29.60% 37.00%  
Federal statutory rate     21.00% 34.00%  
Minimum amount of future taxable income required to realize deferred tax assets $ 9,200,000   $ 9,200,000    
Unrecognized tax benefits $ 5,000   $ 5,000   $ 5,000