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Loan Payable under Credit Agreement (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 01, 2019
Jan. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Loan Payable Under Credit Agreement (Textual)              
Interest expense     $ 1,061,794 $ 1,061,827 $ 3,265,771 $ 3,040,832  
Description of credit facility   Upon 30 days' prior written notice from the applicable noteholder and the Company can prepay principal and interest at any time without penalty.          
Interest rate   5.00%          
Outstanding balance Credit Agreement     20,600,627   20,600,627    
Unamortized issuance costs     367,346   367,346   $ 164,752
Credit Agreement [Member]              
Loan Payable Under Credit Agreement (Textual)              
Borrowed from lender     32,500,000   32,500,000    
Interest expense     $ 725,702 $ 689,667 $ 2,415,231 $ 2,103,891  
Description of credit facility The Commitment Termination Date was extended to February 28, 2021.            
Interest rate 11.00%   13.03%   13.03%    
Repayment of loan payable under credit agreement         $ 11,899,373